JP2018119396A - Exfoliation protective structure for tunnel - Google Patents

Exfoliation protective structure for tunnel Download PDF

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JP2018119396A
JP2018119396A JP2018030320A JP2018030320A JP2018119396A JP 2018119396 A JP2018119396 A JP 2018119396A JP 2018030320 A JP2018030320 A JP 2018030320A JP 2018030320 A JP2018030320 A JP 2018030320A JP 2018119396 A JP2018119396 A JP 2018119396A
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reinforcing plate
reinforcing
tunnel
wall
plate
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JP6577076B2 (en
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松岡　茂
Shigeru Matsuoka
茂 松岡
昌之 加古
Masayuki Kako
昌之 加古
知紀 安保
Tomonori Anpo
知紀 安保
章浩 岩井
Akihiro Iwai
章浩 岩井
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Ube Exsymo Co Ltd
Tekken Corp
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Ube Exsymo Co Ltd
Tekken Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an exfoliation protective structure for a tunnel which is capable of implementing an effective measure for water leakage as appropriate for the water leakage condition of the protective wall, reinforcing a protective wall with a lining wall of an existing tunnel and preventing exfoliation and improving heat insulation and thermal insulation properties to prevent icicle or dew formation, and securing safety of automobiles passing through the tunnel.SOLUTION: A plurality of reinforcing plates 7 of synthetic resin are fixed along a circumferential direction on a wall surface of a protective wall 4 inside a tunnel, and water leaked from a crack in the protective wall 4 is made to flow down via the reinforcing plates 7. The reinforcing plate 7 has a hollow structure with a number of reinforcing protrusions of synthetic resin arranged inside. A liner plate of synthetic resin is arranged on opposite sides of the reinforcing plate 7 clamping the reinforcing protrusions. Seal packings 19, 21 of elastic material are mounted on the opposite sides along a circumferential direction of the reinforcing plate 7 and a hollow water guiding space is formed in each reinforcing plate 7 so that water leaked from the crack in the protective wall 4 can flow downward along the water guiding space.SELECTED DRAWING: Figure 15

Description

本発明は、例えば既設トンネルの補修に好適で、簡単な構成で安価かつ容易に施工でき、トンネルの覆工壁による防護壁を補強し剥落を防止するとともに、防護壁の断熱性ないし保温性を向上して氷柱の発生や結露の氷結を防止し、トンネル内を通行する自動車の安全を確保するとともに、防護壁の漏水状況に応じて有効な漏水対策を施せるトンネルの剥落防護構造に関する。   The present invention is suitable, for example, for repairing an existing tunnel, can be easily and inexpensively constructed with a simple structure, reinforces a protective wall by a tunnel lining wall, prevents peeling, and provides heat insulation or heat insulation of the protective wall. The present invention relates to a tunnel peeling protection structure that can prevent the occurrence of icicles and freeze condensation, ensure the safety of automobiles passing through the tunnel, and take effective measures against leakage according to the leakage status of the protective wall.

トンネルは経年的に劣化し、覆工壁がひび割れ剥落して漏水する惧れがあるため、定期的に補修し剥落や漏水を防止する必要がある。
このような要請に応じられるものとして、トンネルの覆工壁の壁面に剥落防止ネットを取付け、該剥落防止ネットは透明シートを熱圧着した合成樹脂製の樹脂ネットと、該樹脂ネットの表面を押し付ける押さえ板と、該押さえ板に打ち込むアンカーボルトとから構成され、これらを順次積み重ねアンカーボルトを打ち込んで取付け、樹脂構造による軽量化と可撓性による施工性の改善を図り、また覆工壁からの漏水を透明シート或いは壁面に沿わせて導水させるものがある（例えば、特許文献１参照）。 Tunnels deteriorate over time, and the lining wall may crack and peel off, causing water leakage. Therefore, it is necessary to periodically repair and prevent peeling and water leakage.
In order to meet such demands, a peeling prevention net is attached to the wall of the tunnel lining wall, and the peeling prevention net presses the surface of the resin net made of a synthetic resin obtained by thermocompression bonding of a transparent sheet. It consists of a pressure plate and anchor bolts that are driven into the pressure plate. These are piled up one after the other, and anchor bolts are driven in and attached to reduce weight by the resin structure and improve workability by flexibility. Some leak water along a transparent sheet or wall surface (see, for example, Patent Document 1).

しかし、前記剥落防止ネットは、樹脂ネットが高価で工費が高騰するとともに、透明シート或いは壁面の微小な隙間に沿わせて漏水を導水させるため、導水能率が悪く前記隙間に漏水が滞留し易くなり、しばしばアンカーボルトを伝わって滲み出てしまうという問題があった。   However, the peeling prevention net is expensive because the resin net is expensive and the construction cost increases, and water leakage is guided along a small gap in the transparent sheet or wall surface, so the water transfer efficiency is poor and water leakage tends to stay in the gap. There was a problem that it often oozes through the anchor bolt.

また、トンネルの覆工壁の剥落を防護する他の構造として、トンネルの覆工壁の壁面にトンネル内面補修材を取付け、該補修材は補強筋を格子状に配置したＦＲＰ格子筋と、ＦＲＰ格子筋上に配置する不燃フレキシブル板と、ＦＲＰ格子筋と不燃フレキシブル板との間に配置する防水シートと、から構成され、これらに複数のアンカーボルトを打ち込んで壁面に取付けたものがある（例えば、特許文献２参照）。   In addition, as another structure for protecting the tunnel lining wall from peeling off, a tunnel inner surface repair material is attached to the wall surface of the tunnel lining wall, and the repair material is an FRP lattice reinforcement in which reinforcing bars are arranged in a lattice pattern, and FRP There is a non-combustible flexible plate disposed on the lattice line, and a waterproof sheet disposed between the FRP lattice line and the non-combustible flexible plate, and a plurality of anchor bolts are driven into these and attached to the wall surface (for example, , See Patent Document 2).

しかし、前記トンネル内面補修材は、部品点数が多く取付けに手間が掛かるとともに、ＦＲＰ格子筋の量産化が難しく工費の高騰を助長するという問題があった。   However, the tunnel inner surface repair material has a problem in that it requires a lot of parts and is troublesome to mount, and it is difficult to mass-produce FRP lattices, which increases the construction cost.

そこで、前記問題を解決するものとして、トンネルの覆工壁の内面に合成樹脂シート製の氷結防止パネルを配置し、該氷結防止パネルは、裏面に突設した複数のリブを覆工壁の表面に配置する防水シートと、該防水シートの表面に取付ける断熱材と、断熱材の表面に接着した内装板と、からなり、前記リブをトンネルの円周方向に配置し、アンカーボルトを介して氷結防止パネルを覆工壁の表面に取付け、覆工壁の表面に滲み出た漏水をリブに導き、トンネルの円周方向へ排水するものがある（例えば、特許文献３参照）。   Therefore, as a solution to the above problem, an anti-icing panel made of synthetic resin sheet is disposed on the inner surface of the lining wall of the tunnel, and the anti-icing panel has a plurality of ribs projecting on the back surface of the lining wall surface. A waterproof sheet disposed on the surface of the waterproof sheet, and an interior board adhered to the surface of the heat-insulating sheet. The ribs are disposed in the circumferential direction of the tunnel and are frozen through anchor bolts. There is one that attaches a prevention panel to the surface of the lining wall, guides water leaked to the surface of the lining wall to the rib, and drains it in the circumferential direction of the tunnel (for example, see Patent Document 3).

しかし、前記氷結防止パネルは、部品点数が多く取付けが煩雑で手間が掛かるとともに、覆工壁の内面と防水シートとの間にリブによる導水溝を配置するため、覆工壁の剥落防護強度が低下するとともに、トンネル内空の建築限界を損なうという問題があった。   However, the anti-icing panel has a large number of parts and is troublesome to mount and takes time and has a rib for guiding water between the inner surface of the lining wall and the waterproof sheet. In addition to the decline, there was a problem that the architectural limit in the sky inside the tunnel was impaired.

また、前記問題を解決する他の手段として、トンネルの覆工壁の内面に漏水対策用不燃軽量板を配置し、該漏水対策用不燃軽量板は、不燃性のプラスチック発泡体を芯材とし、その表裏両側に不燃性の繊維強化プラスチックからなる外皮材を配置し、これらをトンネルの覆工壁の内面に合わせて曲面状に一体成形したものがある（例えば、特許文献４参照）。   Further, as another means for solving the above-mentioned problem, a non-combustible lightweight board for water leakage prevention is disposed on the inner surface of the tunnel lining wall, and the non-combustible lightweight board for water leakage prevention uses a non-combustible plastic foam as a core material, There is a case in which a skin material made of a non-combustible fiber reinforced plastic is arranged on both the front and back sides, and these are integrally molded into a curved shape in accordance with the inner surface of a tunnel lining wall (for example, see Patent Document 4).

しかし、前記漏水対策用不燃軽量板は、軽量で施工性は改善されるが、トンネルの覆工壁の内面に密着させて配置するため、覆工壁からの漏水の排出が遮られて滞留し、不燃軽量板の接合部からの滲み出しを助長し、その氷結や破損を誘発するとともに、漏水対策用不燃軽量板の強度が概して低く、覆工壁の剥落防護強度が低下するという問題があった。   However, the non-combustible lightweight board for preventing water leakage is lightweight and improves workability, but it is placed in close contact with the inner surface of the tunnel lining wall, so that the leakage of water leakage from the lining wall is blocked and stays. However, there is a problem that the nonflammable lightweight board promotes bleeding from the joint, induces icing and breakage, and the nonflammable lightweight board for water leakage countermeasures is generally low in strength, and the peeling protection strength of the lining wall is reduced. It was.

特開２００７−１２０２３１号公報JP 2007-120231 A 特開２００９−２２８２４３号公報JP 2009-228243 A 特開平１０−１６９３８８号公報Japanese Patent Laid-Open No. 10-169388 特開２００１−３３６３９３号公報JP 2001-336393 A

本発明はこのような問題を解決し、例えば既設トンネルの補修に好適で、簡単な構成で安価かつ容易に施工でき、トンネルの覆工壁による防護壁を補強し剥落を防止するとともに、防護壁の断熱性ないし保温性を向上して氷柱の発生や結露の氷結を防止し、トンネル内を通行する自動車の安全を確保するとともに、防護壁の漏水状況に応じて有効な漏水対策を施せるトンネルの剥落防護構造を提供することを目的とする。   The present invention solves such a problem, and is suitable for repairing an existing tunnel, for example, can be easily and inexpensively constructed with a simple structure, reinforces a protective wall by a tunnel lining wall, prevents peeling, and protects the protective wall. Of the tunnel that can prevent the occurrence of icicles and dew condensation by improving the heat insulation or heat insulation of the vehicle, ensuring the safety of automobiles passing through the tunnel, and taking effective measures against water leakage according to the leakage situation of the protective wall The purpose is to provide a peeling protection structure.

請求項１の発明は、トンネル内の天端部を含む防護壁の壁面に合成樹脂製の複数の補強板を円周方向に沿って固定し、防護壁のクラックから漏出した漏水を補強板を介して流下可能にしたトンネルの剥落防護構造において、前記補強板は内部に合成樹脂製の補強凸部を多数配置した中空構造とし、該補強凸部を挟む補強板の両側に合成樹脂製のライナープレートを配置し、前記補強板の円周方向に沿う両側に弾性材からなるシールパッキングを取付け、該シールパッキングを防護壁の壁面に固定し、各補強板に前記シールパッキングで両側を区画した中空の導水スペースを形成し、各補強板の導水スペースを円周方向に連通可能に配置し、防護壁のクラックから漏出した漏水を前記導水スペースに導入可能に設け、該漏水を導水スペースに沿って下方へ流下可能にし、防護壁から補強板に流下した漏水を導水スペースに導いて速やかに外部へ排出し、漏水の凍結を防止するとともに、漏水による氷柱の生成を防止し、例えばトンネル内を通行する車両の安全性を確保するようにしている。   According to the first aspect of the present invention, a plurality of synthetic resin reinforcing plates are fixed to the wall surface of the protective wall including the top end portion in the tunnel along the circumferential direction, and the leaking water leaked from the crack of the protective wall is attached to the reinforcing plate. In the tunnel peeling protection structure that is allowed to flow through, the reinforcing plate has a hollow structure in which a number of reinforcing projections made of synthetic resin are arranged inside, and liners made of synthetic resin on both sides of the reinforcing plate sandwiching the reinforcing projections A plate is arranged, and seal packing made of an elastic material is attached to both sides along the circumferential direction of the reinforcing plate, the seal packing is fixed to the wall surface of the protective wall, and each reinforcing plate is hollowed with both sides separated by the seal packing. The water guide space of each reinforcing plate is arranged so as to be able to communicate in the circumferential direction, and water leaked from the crack of the protective wall can be introduced into the water guide space, and the water leak is placed along the water guide space. The leaked water that has flowed down from the protective wall to the reinforcing plate is led to the water guide space and quickly discharged to the outside to prevent the leakage of water and prevent the formation of icicles due to the water leak. The safety of passing vehicles is ensured.

請求項２の発明は、円周方向に隣接して配置する第１および第２補強板を設け、第１補強板の両側にシールパッキングを取付け、その一側端部に薄厚の連結シ−トを突設するとともに、第２補強板の両側にシールパッキングを取付け、その一端部に平坦なブランク部を設け、該ブランク部に前記連結シ−トの突出部を重合して固定し、第１および第２補強板を接続するとともに、それらの両側のシールパッキングの端部を接合して配置し、第１および第２補強板を水密に連結し、それらの導水スペースを連通可能に配置して、漏水を円滑に通水可能にしている。
請求項３の発明は、第１および第２補強板のシールパッキングをアンカーボルトを介して防護壁の壁面に固定し、シールパッキングを防護壁の壁面に強固かつ密着して固定し、その水密性を得られるとともに、防護壁の壁面の多少の凹凸を許容して取付けられるようにしている。 According to the second aspect of the present invention, there are provided first and second reinforcing plates arranged adjacent to each other in the circumferential direction, seal packings are attached to both sides of the first reinforcing plate, and a thin connecting sheet is provided at one end portion thereof. And the seal packing is attached to both sides of the second reinforcing plate, a flat blank portion is provided at one end thereof, and the protruding portion of the connecting sheet is overlapped and fixed to the blank portion. And the second reinforcing plate are connected, the ends of the seal packings on both sides thereof are joined, arranged, the first and second reinforcing plates are connected in a watertight manner, and the water guide spaces are arranged so as to communicate with each other. , Leaking water smoothly.
According to the invention of claim 3, the seal packing of the first and second reinforcing plates is fixed to the wall surface of the protective wall via the anchor bolt, and the seal packing is fixed firmly and closely to the wall surface of the protective wall. In addition, it can be mounted with some unevenness on the wall of the protective wall.

請求項４の発明は、第１補強板の他側端部に弾性材からなるシールパッキングを取付け、該シールパッキングを両側のシールパッキングの端部に接合して配置し、これらのシールパッキングと第１補強板と防護壁の壁面との間に、逆コ字形状ないしＵ字形状の導水スペースを区画形成可能にし、導水スペースに流下した漏水を一方向へ円滑に移動可能にしている。
請求項５の発明は、一組の第１補強板をトンネル内の防護壁の天端部に配置し、それらの他側端部のシールパッキングを接合して配置し、前記第１補強板の一側端部に第２補強板を配置し、天端部から第１補強板に流下した漏水を分流し、これを第１および第２補強板の導水スペースによって円滑に移動するようにしている。 According to a fourth aspect of the present invention, a seal packing made of an elastic material is attached to the other end of the first reinforcing plate, and the seal packing is joined to the ends of the seal packing on both sides. A reverse U-shaped or U-shaped water guide space can be defined between the reinforcing plate and the wall of the protective wall, and the water leaked into the water guide space can be smoothly moved in one direction.
According to the invention of claim 5, a pair of first reinforcing plates are arranged at the top end portion of the protective wall in the tunnel, and seal packings at the other end portions thereof are joined and arranged. A second reinforcing plate is disposed at one side end portion, and the water leaked from the top end portion to the first reinforcing plate is diverted, and this is smoothly moved by the water guiding space of the first and second reinforcing plates. .

請求項６の発明は、補強凸部を中空の筒状ないし円錐台形状、または波形ないし鋸歯状に突出成形し、多様な補強凸部によって補強板の弾性と剛性を向上するようにしている。
請求項７の発明は、シールパッキングの板厚を前記補強板と同厚に形成し、これらによるトンネル坑内の占有面積を抑制し、トンネルの内空面積を広く確保するようにしている According to a sixth aspect of the present invention, the reinforcing convex portion is protruded and formed into a hollow cylindrical shape, a truncated cone shape, a corrugated shape or a sawtooth shape, and the elasticity and rigidity of the reinforcing plate are improved by various reinforcing convex portions.
In the invention of claim 7, the thickness of the seal packing is formed to be the same as that of the reinforcing plate, thereby suppressing the occupied area in the tunnel mine and ensuring a wide tunnel inner space area.

請求項１の発明は、補強板は内部に合成樹脂製の補強凸部を多数配置した中空構造とし、該補強凸部を挟む補強板の両側に合成樹脂製のライナープレートを配置し、前記補強板の円周方向に沿う両側に弾性材からなるシールパッキングを取付け、該シールパッキングを防護壁の壁面に固定し、各補強板に前記シールパッキングで両側を区画した中空の導水スペースを形成し、各補強板の導水スペースを円周方向に連通可能に配置し、防護壁のクラックから漏出した漏水を前記導水スペースに導入可能に設け、該漏水を導水スペースに沿って下方へ流下可能にしたから、防護壁から補強板に流下した漏水を導水スペースに導いて速やかに外部へ排出し、漏水の凍結を防止するとともに、漏水による氷柱の生成を防止し、例えばトンネル内を通行する車両の安全性を確保することができる。   According to the first aspect of the present invention, the reinforcing plate has a hollow structure in which a number of synthetic resin reinforcing projections are arranged, and a synthetic resin liner plate is arranged on both sides of the reinforcing plate sandwiching the reinforcing projections. Attach seal packing made of elastic material on both sides along the circumferential direction of the plate, fix the seal packing to the wall surface of the protective wall, and form a hollow water guide space partitioned on both sides by the seal packing on each reinforcing plate, Because the water guide space of each reinforcing plate is arranged so as to be able to communicate in the circumferential direction, the water leaked from the crack of the protective wall is provided so as to be able to be introduced into the water guide space, and the water leak is allowed to flow downward along the water guide space. The water leaked from the protective wall to the reinforcing plate is led to the water guide space and quickly discharged to the outside to prevent the water from freezing and to prevent the formation of icicles due to the water leak. It is possible to ensure the safety of that vehicle.

請求項２の発明は、円周方向に隣接して配置する第１および第２補強板を設け、第１補強板の両側にシールパッキングを取付け、その一側端部に薄厚の連結シートを突設するとともに、第２補強板の両側にシールパッキングを取付け、その一端部に平坦なブランク部を設け、該ブランク部に前記連結シ−トの突出部を重合して固定し、第１および第２補強板を接続するとともに、それらの両側のシールパッキングの端部を接合して配置したから、第１および第２補強板を水密に連結し、それらの導水スペースを連通可能に配置して、漏水を円滑に通水することができる。
請求項３の発明は、第１および第２補強板のシールパッキングをアンカーボルトを介して防護壁の壁面に固定したから、シールパッキングを防護壁の壁面に強固かつ密着して固定し、その水密性を得られるとともに、防護壁の壁面の多少の凹凸を許容して取付けることができる。 The invention according to claim 2 is provided with first and second reinforcing plates arranged adjacent to each other in the circumferential direction, seal seals are attached to both sides of the first reinforcing plate, and a thin connecting sheet is projected to one end portion thereof. The seal packing is attached to both sides of the second reinforcing plate, a flat blank portion is provided at one end thereof, and the protruding portion of the connecting sheet is superposed and fixed to the blank portion. Since the two reinforcing plates are connected and the ends of the seal packings on both sides thereof are joined and arranged, the first and second reinforcing plates are connected in a watertight manner, and their water guiding spaces are arranged so as to communicate with each other. Water leakage can be passed smoothly.
In the invention of claim 3, since the seal packing of the first and second reinforcing plates is fixed to the wall surface of the protective wall via the anchor bolt, the seal packing is fixed firmly and tightly to the wall surface of the protective wall, It is possible to obtain the property and to allow attachment with some unevenness of the wall surface of the protective wall.

請求項４の発明は、第１補強板の他側端部に弾性材からなるシールパッキングを取付け、該シールパッキングを両側のシールパッキングの端部に接合して配置し、これらのシールパッキングと第１補強板と防護壁の壁面との間に、逆コ字形状ないしＵ字形状の導水スペースを区画形成可能にしたから、導水スペースに流下した漏水を一方向へ円滑に移動させることができる。
請求項５の発明は、一組の第１補強板をトンネル内の防護壁の天端部に配置し、それらの他側端部のシールパッキングを接合して配置し、前記第１補強板の一側端部に第２補強板を配置したから、天端部から第１補強板に流下した漏水を分流し、これを第１および第２補強板の導水スペースによって円滑に移動することができる。 According to a fourth aspect of the present invention, a seal packing made of an elastic material is attached to the other end of the first reinforcing plate, and the seal packing is joined to the ends of the seal packing on both sides. Since the reverse U-shaped or U-shaped water guide space can be defined between the reinforcing plate and the wall surface of the protective wall, the water leaked into the water guide space can be smoothly moved in one direction.
According to the invention of claim 5, a pair of first reinforcing plates are arranged at the top end portion of the protective wall in the tunnel, and seal packings at the other end portions thereof are joined and arranged. Since the second reinforcing plate is arranged at the one side end portion, the water leaked from the top end portion to the first reinforcing plate can be divided and smoothly moved by the water guide space of the first and second reinforcing plates. .

請求項６の発明は、補強凸部を中空の筒状ないし円錐台形状、または波形ないし鋸歯状に突出成形したから、多様な補強凸部によって補強板の弾性と剛性を向上することができる。
請求項７の発明は、シールパッキングの板厚を前記補強板と同厚に形成したから、これらによるトンネル坑内の占有面積を抑制し、トンネルの内空面積を広く確保することができる。 According to the sixth aspect of the present invention, since the reinforcing convex portion is protruded and formed into a hollow cylindrical shape, a truncated cone shape, a corrugated shape or a sawtooth shape, the elasticity and rigidity of the reinforcing plate can be improved by various reinforcing convex portions.
In the invention of claim 7, since the plate thickness of the seal packing is formed to be the same as that of the reinforcing plate, it is possible to suppress the occupied area in the tunnel pit and to ensure a wide tunnel inner area.

本発明の基本形態をトンネルの覆工壁の剥落防護に適用した状況を示す断面図である。It is sectional drawing which shows the condition which applied the basic form of this invention to the peeling protection of the lining wall of a tunnel. 図１の要部を拡大して示す断面図である。It is sectional drawing which expands and shows the principal part of FIG. 本発明の基本形態に適用した補強板の一部を拡大して示す平面図である。It is a top view which expands and shows a part of reinforcement board applied to the basic form of this invention. 本発明の基本形態に適用した補強板の要部を拡大して示す斜視図である。It is a perspective view which expands and shows the principal part of the reinforcement board applied to the basic form of this invention. 図３のＡ−Ａ線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 図５の要部を拡大して示す断面図である。It is sectional drawing which expands and shows the principal part of FIG. 本発明の基本形態の施工状態の要部を拡大して示す断面図である。It is sectional drawing which expands and shows the principal part of the construction state of the basic form of this invention.

本発明の他の基本形態に適用した補強板の一部を拡大して示す平面図であるIt is a top view which expands and shows a part of reinforcement board applied to the other basic form of this invention. 前記他の基本形態に適用した補強板の要部を拡大して示す斜視図である。It is a perspective view which expands and shows the principal part of the reinforcement board applied to the said other basic form. 図８のＢ−Ｂ線に沿う部分拡大断面図である。It is a partial expanded sectional view which follows the BB line of FIG. 前記他の基本形態に適用した補強板の施工状態を拡大して示す断面図である。It is sectional drawing which expands and shows the construction state of the reinforcement board applied to the said other basic form. 本発明の別の基本形態に適用した補強板の一部を拡大して示す平面図である。It is a top view which expands and shows a part of reinforcement board applied to another basic form of this invention. 図１２のＣ−Ｃ線に沿う部分拡大断面図である。It is a partial expanded sectional view which follows the CC line of FIG. 前記別の基本形態に適用した補強板の施工状態を拡大して示す断面図である。It is sectional drawing which expands and shows the construction state of the reinforcement board applied to the said another basic form.

本発明の実施形態の施工状態を示す断面図である。It is sectional drawing which shows the construction state of embodiment of this invention. 前記実施形態における第１および第２補強板の配置状況を示す模式図である。It is a schematic diagram which shows the arrangement | positioning condition of the 1st and 2nd reinforcement board in the said embodiment. 前記実施形態に適用した第１および第２補強板を示す斜視図であるIt is a perspective view which shows the 1st and 2nd reinforcement board applied to the said embodiment. 前記実施形態に適用した第１補強板を分解して示す斜視図である。It is a perspective view which decomposes | disassembles and shows the 1st reinforcement board applied to the said embodiment. 前記実施形態に適用した第２補強板を分解して示す斜視図である。It is a perspective view which decomposes | disassembles and shows the 2nd reinforcement board applied to the said embodiment. 図１５のＤ−Ｄ線に沿う断面図で、覆工壁と第１補強板との間の導水スペースに流下した漏水の収容と通水状況を示している。It is sectional drawing in alignment with the DD line | wire of FIG. 15, The accommodation and water flow condition of the water leakage which flowed down to the water conveyance space between a lining wall and a 1st reinforcement board are shown. 図１５のＥ−Ｅ線に沿う断面図で、覆工壁と第２補強板との間の導水スペースに流下した漏水の収容と通水状況を示している。It is sectional drawing in alignment with the EE line | wire of FIG. 15, The accommodation and water flow condition of the water leakage which flowed down to the water conveyance space between a lining wall and a 2nd reinforcement board are shown.

以下、本発明をトンネルの覆工壁の剥落防護に適用した図示の基本形態について説明すると、図１乃至図７において１は剥落防護対象である鉄道または道路トンネルで、地山２を掘削した掘削穴３にコンクリート、煉瓦等の防護壁である覆工壁４が構築され、その内空５の底部に鉄道または道路を施工可能なインバートコンクリート部６が敷設されている   Hereinafter, the illustrated basic form in which the present invention is applied to the protection of peeling of a tunnel lining wall will be described. In FIGS. 1 to 7, reference numeral 1 denotes a railroad or road tunnel which is a protection for peeling, and excavation of a natural ground 2 is performed. A lining wall 4 which is a protective wall such as concrete or brick is constructed in the hole 3, and an invert concrete portion 6 capable of constructing a railway or road is laid at the bottom of the inner space 5.

前記覆工壁４の天端部と両側壁上部に亘って、当該部の剥落と漏水を阻止可能な中空構造の複数の補強板７が取付けられている。
前記補強板７は、ポリプロピレンまたはポリカーボネート等の強靭で軽量な合成樹脂で構成され、その板厚は約５．２〜５．３ｍｍの薄厚に構成され、これを例えば０．６ｍ×２．０ｍ、１ｍ×３ｍの矩形に裁断して使用している。 A plurality of reinforcing plates 7 having a hollow structure capable of preventing peeling of the portion and water leakage are attached across the top end portion of the lining wall 4 and the upper portions of both side walls.
The reinforcing plate 7 is made of a tough and lightweight synthetic resin such as polypropylene or polycarbonate, and the plate thickness is made to be a thin thickness of about 5.2 to 5.3 mm, for example, 0.6 m × 2.0 m, It is cut into a 1m x 3m rectangle.

前記補強板７は、所定間隔に対向配置した前述の合成樹脂製の薄厚の一対のライナープレート８，９と、該ライナープレート８，９の間に配置された前述の合成樹脂製の薄厚のコアプレート１０とで、三層状に構成されている。
前記ライナープレート８，９とコアプレート１０とは同形の矩形に形成され、このうちコアプレート１０の一側面は一方のライナープレート９に接着ないし溶着され、その他側面に中空の筒状または軸状の円錐台形の補強凸部１１が複列千鳥状に配置され、その円錐台形状の先端部１１ａを他方のライナープレート８に接着ないし溶着している。
したがって、補強板７は多数の補強凸部１１によってライナープレート８，９を支持し、かつ所定の弾性と剛性を形成して堅牢に構成され、その内部はライナープレート８とコアプレート１０との間の補強凸部１１の空隙によって、中空かつ連通可能に構成されている。 The reinforcing plate 7 includes a pair of thin liner plates 8 and 9 made of the above-described synthetic resin arranged to face each other at a predetermined interval, and a thin core made of the above-mentioned synthetic resin arranged between the liner plates 8 and 9. The plate 10 is configured in three layers.
The liner plates 8 and 9 and the core plate 10 are formed in the same rectangular shape, and one side of the core plate 10 is bonded or welded to one liner plate 9 and the other side is a hollow cylinder or shaft. The frustoconical reinforcing projections 11 are arranged in a double-row zigzag pattern, and the frustoconical tip portion 11 a is bonded or welded to the other liner plate 8.
Accordingly, the reinforcing plate 7 supports the liner plates 8 and 9 by a large number of reinforcing projections 11 and is firmly formed by forming predetermined elasticity and rigidity, and the inside thereof is between the liner plate 8 and the core plate 10. It is comprised by the space | gap of this reinforcement convex part 11 so that it can communicate hollowly.

前記補強板７の両側端部と中間位置に座金１２が配置され、該座金１２にアンカーボルト１３を挿入し、これを覆工壁４に打ち込んで固定している。
前記ライナープレート８，９の一方、実施形態ではライナープレート８の適宜位置に複数の導水孔１４が形成され、該導水孔１４を補強板７の内部に連通可能にしていて、該導水孔１４を覆工壁４の漏水位置に対応して適宜工具を介し施工現場で搾孔可能にされ、施工時は前記導水孔１４ないしライナープレート８を覆工壁４の内面に向けて補強板７を配置し、アンカーボルト１３によって固定可能にしている。 Washers 12 are disposed at both sides and intermediate positions of the reinforcing plate 7, and anchor bolts 13 are inserted into the washers 12, which are driven into the lining wall 4 and fixed.
In one embodiment of the liner plates 8 and 9, a plurality of water guide holes 14 are formed at appropriate positions in the liner plate 8, and the water guide holes 14 can communicate with the inside of the reinforcing plate 7. Corresponding to the water leakage position of the lining wall 4, it is possible to squeeze the hole on the construction site through a tool as appropriate, and the reinforcing plate 7 is arranged with the water guide hole 14 or the liner plate 8 facing the inner surface of the lining wall 4 during construction. The anchor bolt 13 can be used for fixing.

前記補強板７の取付け状況は図２および図６のようで、覆工壁４の天端部に覆工壁４の壁面に沿って補強板７を円周方向に密着して配置し、該補強板７の両端部上に別の補強板７，７の上側端部を重合し、その重合部をアンカーボルト１３を介して覆工壁４に固定している。   The reinforcing plate 7 is attached as shown in FIGS. 2 and 6, and the reinforcing plate 7 is arranged in close contact with the top end of the covering wall 4 along the wall surface of the covering wall 4 in the circumferential direction, The upper ends of the other reinforcing plates 7 and 7 are overlapped on both ends of the reinforcing plate 7, and the overlapped portion is fixed to the lining wall 4 via the anchor bolts 13.

そして、前記補強板７，７を覆工壁４の壁面に沿って円周方向に配置し、その下側端部を覆工壁４の内面に密着して配置し、かつ該補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成し、該空隙部１５を漏水樋または漏水溜りとして機能可能にしている。   The reinforcing plates 7 and 7 are arranged in the circumferential direction along the wall surface of the lining wall 4, the lower end thereof is arranged in close contact with the inner surface of the lining wall 4, and the reinforcing plate 7 and 7 A wedge-shaped gap 15 having a gradually narrow width is formed on the lower side between the lining wall 7 and the lining wall 4 so that the gap 15 can function as a water leak tank or a water reservoir.

前記密着した補強板７の下側端部上に次の補強板７，７の上側端部を重合し、その重合部をアンカーボルト１３を介して覆工壁４に固定し、前記補強板７，７の下側端部を覆工壁４の壁面に沿って円周方向に配置し、補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成している。   The upper end of the next reinforcing plate 7, 7 is superposed on the lower end of the closely attached reinforcing plate 7, the superposed portion is fixed to the lining wall 4 via the anchor bolts 13, and the reinforcing plate 7 , 7 is disposed in a circumferential direction along the wall surface of the lining wall 4, and a wedge-shaped gap portion 15 having a gradually narrower width between the reinforcing plates 7, 7 and the lining wall 4. Is forming.

そして、前記補強板７，７の下側端部を覆工壁４の内面に沿って円周方向に配置し、その下側端部を覆工壁４の壁面に密着して配置し、前記補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成するとともに、前記密着した補強板７，７の下側端部をアンカーボルト１３を介して覆工壁４に固定している。   And, the lower end portion of the reinforcing plates 7, 7 is arranged in the circumferential direction along the inner surface of the lining wall 4, and the lower end portion thereof is arranged in close contact with the wall surface of the lining wall 4, Between the reinforcing plates 7 and 7 and the lining wall 4, a wedge-shaped gap 15 having a gradually narrow width is formed on the lower side, and the lower ends of the closely attached reinforcing plates 7 and 7 are connected via anchor bolts 13. And fixed to the lining wall 4.

基本形態では覆工壁４の上部内面の施工域に５枚の補強板７を円周方向に配置し、その両端部をアンカーボルト１３を介して覆工壁４に固定しているが、これを天端部から覆工壁４の側壁下部に亘る全域に施工しても良く、その場合は前述と同様に補強板７を繰り返し施工すれば良い。
この他、図中、１６は座金１２に形成したアンカーボルト１３の挿通孔、１７はトンネル１内を走行する自動車である。 In the basic form, five reinforcing plates 7 are arranged in the circumferential direction in the construction area of the upper inner surface of the lining wall 4 and both ends thereof are fixed to the lining wall 4 via anchor bolts 13. May be applied to the entire region extending from the top end to the lower portion of the side wall of the lining wall 4, and in this case, the reinforcing plate 7 may be applied repeatedly as described above.
In addition, in the figure, 16 is an insertion hole for the anchor bolt 13 formed in the washer 12, and 17 is an automobile traveling in the tunnel 1.

このように構成したトンネルの剥落防護構造の基本形態は補強板７の製作を要し、該補強板７はポリプロピレンまたはポリカ−ボネ−ト等の強靭で軽量な合成樹脂で構成し、量産化を図れるから、従来の量産化が困難なＦＲＰ製のものに比べて、安価に製作し得る。
また、前記補強板７の板厚は約５．２〜５．３ｍｍの薄厚で、これを施工に際して例えば０．６ｍ×２．０ｍ、１ｍ×３ｍの矩形に裁断して使用し、実施形態では覆工壁４の天端部から両側壁の上部に亘って５枚の補強板７を取付け、その裁断寸法を決定している。 The basic form of the tunnel peeling protection structure constructed in this way requires the production of a reinforcing plate 7, which is made of a tough and lightweight synthetic resin such as polypropylene or polycarbonate for mass production. Therefore, it can be manufactured at a lower cost compared to conventional FRP products that are difficult to mass-produce.
The reinforcing plate 7 has a thickness of about 5.2 to 5.3 mm, and is cut into a rectangle of 0.6 m × 2.0 m and 1 m × 3 m, for example. Five reinforcing plates 7 are attached from the top end portion of the lining wall 4 to the upper portions of both side walls, and the cutting dimensions thereof are determined.

前記補強板７は、前述の合成樹脂製の薄厚の一対のライナープレート８，９と、該ライナープレート８，９の間に配置する前述の合成樹脂製の薄厚のコアプレート１０とからなり、これらのライナープレート８，９とコアプレート１０とを同形の矩形に形成し、ライナープレート９とコアプレート１０を接着ないし溶着するとともに、ライナープレート８と補強凸部１１の先端部１１ａを接着ないし溶着して、約５．２〜５．３ｍｍの薄厚の三層状に構成する。
すなわち、前記コアプレート１０の一側面を一方のライナープレート９に接着ないし溶着し、その他側面に図４のように中空の円錐台形の多数の補強凸部１１を複列千鳥状に配置し、その円錐台状の先端部１１ａを他方のライナープレート８に接着ないし溶着する。 The reinforcing plate 7 includes a pair of thin liner plates 8 and 9 made of the above-mentioned synthetic resin and a thin core plate 10 made of the above-mentioned synthetic resin disposed between the liner plates 8 and 9. The liner plates 8 and 9 and the core plate 10 are formed in the same rectangular shape, and the liner plate 9 and the core plate 10 are bonded or welded, and the liner plate 8 and the tip 11a of the reinforcing convex portion 11 are bonded or welded. Thus, a thin three-layered structure having a thickness of about 5.2 to 5.3 mm is formed.
That is, one side surface of the core plate 10 is bonded or welded to one liner plate 9, and a plurality of hollow frustoconical reinforcing convex portions 11 are arranged in a double row zigzag on the other side surface as shown in FIG. The frustoconical tip portion 11 a is bonded or welded to the other liner plate 8.

このようにすることによって、補強板７は多数の補強凸部１１によって所定の弾性と剛性を備えて堅牢に構成し、その内部をライナープレート８とコアプレート１０との間の補強凸部１１の空隙によって、中空かつ連通可能に構成する。
しかも、補強板７は前記合成樹脂材と中空構造によって軽量であるから、その取扱や搬送に至便であり、また後述のように羊毛と同程度の熱伝導率を備え、断熱作用ないし保温性を奏するから、トンネル１内の低温化を抑制し、坑内の氷柱の形成や結露の氷結を防止し得る。 In this way, the reinforcing plate 7 is firmly constructed with a predetermined elasticity and rigidity by a large number of reinforcing projections 11, and the inside of the reinforcing projection 7 is between the liner plate 8 and the core plate 10. It is configured to be hollow and communicateable with the gap.
Moreover, since the reinforcing plate 7 is lightweight due to the synthetic resin material and the hollow structure, it is convenient for its handling and transportation, and has a thermal conductivity similar to that of wool, as will be described later, and has a heat insulating action or heat retention. As a result, the temperature in the tunnel 1 can be reduced, and the formation of icicles in the mine and the freezing of condensation can be prevented.

こうして補強板７の原板を工場で製作後、該工場において施工現場のトンネル１内空５の形状寸法や作業条件に応じて適宜形状寸法に裁断し、その所定位置にアンカーボルト１３の挿通孔１６を形成する。   In this way, after the original plate of the reinforcing plate 7 is manufactured at the factory, it is cut into an appropriate shape according to the shape and size of the inner space 5 of the tunnel 1 at the construction site in the factory, and the insertion hole 16 of the anchor bolt 13 is placed at a predetermined position. Form.

前記製作した補強板７について、発明者は補強板７の製作後、補強板７の機械的強度や物理的特性を計測したところ、次の結果を得た。
先ず、補強板７の試験片（１５０ｍｍ×１５０ｍｍ）を作製し、この試験片についてＭＤおよびＴＤ方向の衝撃強度をバンクチャ−試験機によって計測した。
その結果、ＭＤおよびＴＤ方向の衝撃強度は２７０ｋｇ・ｃｍおよび２００ｋｇ・ｃｍで、特にＭＤ方向の衝撃強度は段ボ−ルの４倍程度で、一定の弾性を備えていることが確認された。したがって、補強板７は一定の緩衝効果を奏し、自動車１７等の接触時に自動車１７や覆工壁４の損傷を軽減し得ることが確認された。 Regarding the manufactured reinforcing plate 7, the inventor measured the mechanical strength and physical characteristics of the reinforcing plate 7 after manufacturing the reinforcing plate 7, and obtained the following results.
First, a test piece (150 mm × 150 mm) of the reinforcing plate 7 was produced, and the impact strength in the MD and TD directions was measured for this test piece with a banker tester.
As a result, it was confirmed that the impact strength in the MD and TD directions was 270 kg · cm and 200 kg · cm, and the impact strength in the MD direction was about four times that of the corrugated ball, and had a certain elasticity. Therefore, it has been confirmed that the reinforcing plate 7 has a certain buffering effect and can reduce damage to the automobile 17 and the lining wall 4 when the automobile 17 or the like contacts.

また、補強板７の試験片（１００ｍｍ×１００ｍｍ）を作製し、この試験片についてＪＩＳ−Ｋ−７２０８に準拠して平面圧縮強度を計測した。
その結果、平面圧縮強度は１１．１ｋｇ／ｃｍ2で、高い平面圧縮強度が確認され、潰れ難いことが確認された。 Moreover, the test piece (100 mm x 100 mm) of the reinforcement board 7 was produced, and plane compressive strength was measured about this test piece based on JIS-K-7208.
As a result, the plane compressive strength was 11.1 kg / cm 2 , and a high plane compressive strength was confirmed.

また、ホロメトリックス社製Ｒａｐｉｄ−Ｋにより、ＪＩＳ−Ａ−１４１２−２に準拠して熱伝導率（断熱性）を大気中で室温から１５０℃において計測したところ、熱伝導率が０．０５８Ｗ／ｍｋであることが確認された。
これは羊毛の熱伝導率（断熱性）の０．０５Ｗ／ｍｋと同程度で、発泡スチロールが０．０３Ｗ／ｍｋであることを考慮すると、優れた断熱性ないし保温性があることが確認され、トンネル１内での結露防止および氷柱生成防止効果を奏することが確認された。 Further, when the thermal conductivity (insulating property) was measured in the atmosphere from room temperature to 150 ° C. in accordance with JIS-A-1412-2 by means of Rapid-K manufactured by Holometrix, the thermal conductivity was 0.058 W / mk was confirmed.
This is the same as the thermal conductivity (heat insulation) of wool of 0.05 W / mk, and considering that the expanded polystyrene is 0.03 W / mk, it is confirmed that there is excellent heat insulation or heat retention, It was confirmed that there was an effect of preventing condensation in the tunnel 1 and preventing ice column formation.

次に、前記補強板７を使用して覆工壁４の壁面を補強する場合は、トンネル１の内空５の断面形状と作業条件に応じて、例えば製造工場で補強板７を適宜形状寸法に裁断し、これを施工現場へ搬送する。基本形態では、例えば０．６ｍ×２．０ｍ、１ｍ×３ｍの矩形に裁断して使用する。
前記搬送後、施工現場において覆工壁４のクラック等による漏水位置と状況に応じて、前記裁断した補強板７の一方のライナープレート８，９、基本形態ではライナープレート８の所定位置に所要数の導水孔１４を適宜工具によって孔明けする。 Next, when the reinforcing plate 7 is used to reinforce the wall surface of the lining wall 4, the reinforcing plate 7 is appropriately shaped and dimensioned, for example, at a manufacturing plant according to the cross-sectional shape of the inner space 5 of the tunnel 1 and the working conditions. And cut it to the construction site. In the basic form, for example, it is cut into a rectangle of 0.6 m × 2.0 m and 1 m × 3 m and used.
After the transfer, the required number of the liner plates 8 and 9 of the cut reinforcing plate 7 in a predetermined position of the liner plate 8 in the basic form according to the leakage position and the situation due to cracks or the like of the lining wall 4 at the construction site. The water guide holes 14 are appropriately drilled with a tool.

そして、前記導水孔１４を覆工壁４の壁面に向けて前記補強板７のライナープレート８を覆工壁４の天端部に位置付け、かつ覆工壁４の壁面に沿って円周方向に湾曲して密着し、補強板７の両側に配置した座金１２の挿通孔１６にアンカーボルト１３を差し込み、これを覆工壁４に打ち込んで、補強板７を天端部に取付ける。この場合、補強板７は軽量で適度な可撓性を有するから、前記取付け作業を容易に行なえる。   The liner plate 8 of the reinforcing plate 7 is positioned at the top end of the lining wall 4 with the water conveyance hole 14 facing the lining wall 4, and circumferentially along the lining wall 4 wall surface. The anchor bolt 13 is inserted into the insertion holes 16 of the washer 12 disposed on both sides of the reinforcing plate 7 in a curved and tight contact, and this is driven into the lining wall 4 to attach the reinforcing plate 7 to the top end. In this case, since the reinforcing plate 7 is light and has an appropriate flexibility, the attaching operation can be easily performed.

この場合、補強板７は多数の補強凸部１１を複列千鳥状に配置され、補強凸部１１同士が比較的粗に配置されて、それらの空隙が連通し、しかも補強凸部１１の配置状態によって、補強板７の連通状態や湾曲方向に制約を伴なわないから、補強板７を覆工壁４の内面に円周方向に配置する他、トンネル１の坑内方向に配置しても良く、そのように構成することで補強板７の施工上の自由度を得られる。   In this case, the reinforcing plate 7 has a large number of reinforcing projections 11 arranged in a staggered manner in a double row, the reinforcing projections 11 are relatively coarsely arranged, the gaps communicate with each other, and the reinforcing projections 11 are arranged. Depending on the state, there is no restriction on the communication state and the bending direction of the reinforcing plate 7, so the reinforcing plate 7 may be arranged on the inner surface of the lining wall 4 in the circumferential direction, or in the mine direction of the tunnel 1. In this way, the degree of freedom in construction of the reinforcing plate 7 can be obtained.

この後、前記補強板７の両端部上に次の補強板７，７の上側端部を重合し、その重合部にアンカーボルト１３を挿通して覆工壁４に打ち込み、これらを固定する。
そして、前記補強板７，７を覆工壁４の壁面に沿って円周方向に配置し、その下側端部を覆工壁４の壁面に密着して配置し、かつ該補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成し、該空隙部１５を漏水樋または漏水溜りとして機能させる。 Thereafter, the upper ends of the next reinforcing plates 7 and 7 are superposed on both end portions of the reinforcing plate 7, and anchor bolts 13 are inserted into the superposed portions and driven into the lining wall 4 to fix them.
The reinforcing plates 7 and 7 are arranged in the circumferential direction along the wall surface of the lining wall 4, the lower end thereof is arranged in close contact with the wall surface of the lining wall 4, and the reinforcing plate 7, A wedge-shaped gap 15 having a gradually narrow width is formed on the lower side between the lining wall 7 and the lining wall 4, and the gap 15 is made to function as a water leak tank or a water reservoir.

前記密着した補強板７，７の下側端部上に次の補強板７，７の上側端部を重合し、その重合部にアンカーボルト１３を挿通して覆工壁４に打ち込み、これらを固定する。
そして、前記補強板７，７を覆工壁４の壁面に沿って円周方向に配置し、その下側端部を覆工壁４の内面に密着して配置し、該密着した補強板７，７の下側端部をアンカーボルト１３を介して覆工壁４に固定し、補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成し、該空隙部１５を漏水樋または漏水溜りとして機能させる。 The upper end portion of the next reinforcing plate 7, 7 is overlapped on the lower end portion of the closely attached reinforcing plates 7, 7, and anchor bolts 13 are inserted into the overlapped portion and driven into the lining wall 4. Fix it.
Then, the reinforcing plates 7 and 7 are arranged in the circumferential direction along the wall surface of the lining wall 4, and the lower end thereof is arranged in close contact with the inner surface of the lining wall 4, and the closely attached reinforcing plate 7. , 7 is fixed to the lining wall 4 via anchor bolts 13, and a wedge-shaped gap 15 having a gradually narrow width is formed between the reinforcing plates 7, 7 and the lining wall 4. Then, the gap portion 15 is caused to function as a water leak tank or a water leak reservoir.

以降、前記作業をトンネル１の坑内方向に移動して補強板７を取付け、覆工壁４の漏水箇所に対応する所定域に補強板７を被覆し終えたところで、覆工壁４の補修ないし漏水防止作業を終了する。
その際、トンネル１の最外側に位置する補強板７の外側部は内部が表出し、当該部から漏水が漏洩する惧れがあるため、前記外側部に適当な遮蔽板を取付けて閉塞することが望ましい。 Thereafter, the work is moved in the direction of the tunnel 1 in the tunnel 1 to attach the reinforcing plate 7, and when the reinforcing plate 7 is covered in a predetermined area corresponding to the water leakage location of the lining wall 4, Complete the work to prevent water leakage.
At that time, the outside of the reinforcing plate 7 located on the outermost side of the tunnel 1 is exposed inside, and there is a risk of leakage of water from the portion. Therefore, an appropriate shielding plate is attached to the outside and closed. Is desirable.

なお、この基本形態では覆工壁４の上部周面の施工域に５枚の補強板７を円周方向に配置し、その両端部をアンカーボルト１３を介して覆工壁４に固定しているが、これを天端部から覆工壁４の側壁下部に亘る全域に施工しても良く、その場合は前述と同様の要領で補強板７を順次取付ければ良い。
また、この基本形態はトンネル１の覆工壁４の補修ないし漏水対策に本発明を適用しているが、トンネル１に限らず橋梁の床版下面、ボックスカルバ−ト等の剥落防護にも適用可能である。 In this basic form, five reinforcing plates 7 are arranged in the circumferential direction in the construction area on the upper peripheral surface of the lining wall 4, and both ends thereof are fixed to the lining wall 4 via anchor bolts 13. However, this may be applied to the entire region extending from the top end to the lower part of the side wall of the lining wall 4, and in that case, the reinforcing plate 7 may be attached sequentially in the same manner as described above.
In addition, this basic form applies the present invention to repair of the lining wall 4 of the tunnel 1 or measures against water leakage. However, the present invention is not limited to the tunnel 1 and is also applicable to peeling protection of the bottom surface of the bridge floor slab, the box carb, and the like. Is possible.

こうして補強板７を取付け終えたトンネル１の状況は図１および図２のようで、覆工壁４の壁面上部に複数の補強板７が被覆され、該補強板７はライナープレート８，９と多数の補強凸部１１を突設したコアプレート１０との三層構造に構成され、所定の平面圧縮強度と弾性ないし衝撃強度を有するから、覆工壁４の支持強度を増強し、その剥落を防止するとともに、覆工壁４のクラックからの漏水を防止する。   The state of the tunnel 1 after the reinforcement plate 7 has been attached is as shown in FIGS. 1 and 2, and a plurality of reinforcement plates 7 are coated on the upper surface of the lining wall 4, and the reinforcement plate 7 includes liner plates 8 and 9. Since it has a three-layer structure with a core plate 10 projecting a large number of reinforcing projections 11 and has a predetermined plane compressive strength and elasticity or impact strength, the supporting strength of the lining wall 4 is enhanced and the peeling is prevented. While preventing, the leak from the crack of the lining wall 4 is prevented.

また、トンネル１内を走行する自動車１７の接触や衝突に対し十分な緩衝効果を奏するから、自動車１７や覆工壁４の損傷ないし破損を軽減する。
更に、補強板７は羊毛と同程度の熱伝導率を備え、断熱作用ないし保温性を有するから、トンネル１内の低温化を抑制し坑内の保温を促すから、氷柱の形成や結露の氷結を防止し得る。 In addition, since a sufficient buffering effect is exerted against the contact or collision of the automobile 17 traveling in the tunnel 1, damage or breakage of the automobile 17 or the lining wall 4 is reduced.
In addition, the reinforcing plate 7 has a thermal conductivity similar to that of wool, and has a heat insulating action or heat insulation. Therefore, the low temperature in the tunnel 1 is suppressed and the heat insulation in the mine is promoted. Can be prevented.

一方、覆工壁４の例えば劣化に伴いクラック（図示略）から漏れ出た漏水は、覆工壁４に面する補強板７の一方のライナープレート８上に流下し、該ライナープレート８と覆工壁４との間の空隙部１５に滞留する。
そして、空隙部１５に所定量の漏水が滞留すると、この漏水はライナープレート８に形成した導水孔１４から補強板７の内部に流入し、該補強板７の内部を補強凸部１１，１１間の空隙に導かれて下方へ移動する。 On the other hand, water leaked from a crack (not shown) due to deterioration of the lining wall 4, for example, flows down onto one liner plate 8 of the reinforcing plate 7 facing the lining wall 4 and covers the liner plate 8. It stays in the space 15 between the work wall 4.
When a predetermined amount of water leaks in the gap 15, the water leaks into the reinforcing plate 7 through the water guide holes 14 formed in the liner plate 8, and the inside of the reinforcing plate 7 is interposed between the reinforcing convex portions 11 and 11. It is guided to the gap and moves downward.

この場合、導水孔１４は覆工壁４の漏水箇所に対応するライナープレート８の所定位置に、予め所定数形成されているから、空隙部１５に滞留した漏水を合理的かつ速やかに補強板７の内部へ導入する。
そして、補強板７の内部を漏水が移動する際、下側のライナープレート９に導水孔１４は形成されておらず、またライナープレート９上にコアプレート１０が密着かつ接着されているから、漏水が外部へ漏れ出ることはない。 In this case, since a predetermined number of the water guide holes 14 are formed in advance at a predetermined position of the liner plate 8 corresponding to the water leakage portion of the lining wall 4, the leakage plate staying in the gap portion 15 can be rationally and quickly removed. To the inside.
When water leakage moves inside the reinforcing plate 7, the water guide holes 14 are not formed in the lower liner plate 9, and the core plate 10 is in close contact with and bonded to the liner plate 9. Will not leak out.

また、補強板７の内部には多数の補強凸部１１が連通可能に配置され、これらが漏水の直線的な移動を妨げ複雑に屈折する流路を強いるから、漏水は補強凸部１１，１１の間を複雑に屈折しながら長い流路を移動して補強板７の下端部に到達し、該下端部から直下の空隙部１５へ流出する。   In addition, a large number of reinforcing projections 11 are arranged inside the reinforcing plate 7 so as to be able to communicate with each other, and these impede the linear movement of the leaked water and force a flow path that is refracted in a complicated manner. A long flow path is moved while being refracted in a complicated manner, reaches the lower end portion of the reinforcing plate 7, and flows out from the lower end portion to the space 15 immediately below.

前記空隙部１５へ流れ出た漏水は該空隙部１５に滞留し、所定量滞留したところで導水孔１４から補強板７の内部に流入し、該補強板７の内部を補強凸部１１，１１によって複雑に屈折して補強板７の下端部に到達し、該下端部から直下の空隙部１５へ流出する。
以降、漏水は空隙部１５に流下して滞留し、導水孔１４から補強板７の内部に流入して移動し、該補強板７の下端部から直下の空隙部１５へ流出する。 The water leaked out to the gap 15 stays in the gap 15 and flows into the reinforcing plate 7 from the water guide hole 14 when a predetermined amount of the water leaks. The inside of the reinforcing plate 7 is complicated by the reinforcing projections 11 and 11. And reaches the lower end of the reinforcing plate 7 and flows out from the lower end to the space 15 immediately below.
Thereafter, the leaked water flows down and stays in the gap 15, flows into the reinforcing plate 7 from the water guide hole 14, moves, and flows out from the lower end of the reinforcing plate 7 to the gap 15 immediately below.

そして、漏水が補強板７の内部を移動する際、補強凸部１１，１１に接触して四方に分流し、流速ないし流量を抑制されて長い移動路を長い時間を掛けて移動し、直下の空隙部１５へ流出する。
したがって、補強板７は漏水の流速ないし流量を制御し、その排水量を調整し得るから、漏水量が増える雪解け時期や雨期に有効に対応し得る。
こうして覆工壁４の円周方向の最下位置の補強板７から流下した漏水は、トンネル１内の排水溝（図示略）に導かれてトンネル１の外部へ排出される。 And when a water leak moves inside the reinforcement board 7, it contacts the reinforcement convex parts 11 and 11 and is divided into four directions, the flow velocity or flow rate is suppressed, it moves over a long movement path over a long time, It flows out to the gap 15.
Therefore, since the reinforcing plate 7 can control the flow rate or flow rate of the leaked water and adjust the amount of drainage thereof, it can effectively cope with the thaw time and the rainy season when the amount of leaked water increases.
Thus, the water leaked from the reinforcing plate 7 at the lowest position in the circumferential direction of the lining wall 4 is guided to a drainage groove (not shown) in the tunnel 1 and discharged to the outside of the tunnel 1.

図８乃至図１３は本発明の他の基本形態と別の基本形態を示し、前述の構成と対応する部分に同一の符号を用いている。
このうち、図８乃至図１１は本発明の他の基本形態を示し、この基本形態は補強板７の合成樹脂製のコアプレート１０に円錐台形の中空の補強凸部１１を突設する代わりに、波形ないし鋸歯状断面の多数の補強凸部１１をコアプレート１０の長さ方向または長さ方向と直交方向に突出成形し、その平坦な先端部１１ａをライナープレート８の内面に接着ないし溶着するとともに、コアプレート１０の一端部をライナープレート９上に接着ないし溶着している。
このようにすることで、補強凸部１１の先端部１１ａとライナープレート８との固定面積を増大して結合力を強化し、堅牢な補強板７を得るようにしている。この状況は図８乃至図１０のようである。 8 to 13 show another basic mode different from the basic mode of the present invention, and the same reference numerals are used for portions corresponding to the above-described configuration.
Among these, FIGS. 8 to 11 show other basic forms of the present invention. In this basic form, instead of projecting the frustoconical hollow reinforcing projection 11 on the synthetic resin core plate 10 of the reinforcing plate 7. A large number of reinforcing projections 11 having a corrugated or serrated cross section are formed so as to project in the length direction of the core plate 10 or in the direction perpendicular to the length direction, and the flat tip portion 11a is adhered or welded to the inner surface of the liner plate 8. At the same time, one end of the core plate 10 is bonded or welded onto the liner plate 9.
By doing in this way, the fixed area of the front-end | tip part 11a of the reinforcement convex part 11 and the liner plate 8 is increased, the coupling | bonding force is strengthened, and the robust reinforcement board 7 is obtained. This situation is as shown in FIGS.

前記補強板７を使用して覆工壁４の壁面を補強する場合は、トンネル１の内空５の断面形状と作業条件に応じて、例えば製造工場で補強板７を適宜形状寸法に裁断し、これを施工現場へ搬送し、施工現場で覆工壁４のクラック等による漏水位置と状況に応じて、前記裁断した補強板７の一方のライナープレート８および／または補強凸部１１の先端部１１ａに所要数の導水孔１４を適宜工具によって孔明けする。   When the reinforcing plate 7 is used to reinforce the wall surface of the lining wall 4, the reinforcing plate 7 is appropriately cut into a shape and dimension at a manufacturing plant, for example, according to the cross-sectional shape of the inner space 5 of the tunnel 1 and the working conditions. This is transported to the construction site, and depending on the water leakage position and situation due to cracks in the lining wall 4 at the construction site, one end of the liner plate 8 and / or the reinforcing projection 11 of the cut reinforcing plate 7 A required number of water introduction holes 14 are drilled in 11a with an appropriate tool.

そして、前記導水孔１４を覆工壁４の壁面に向けて前記補強板７のライナープレート８を覆工壁４の天端部に位置付け、かつ波形ないし鋸歯状の連通部を覆工壁４の壁面に沿って円周方向に湾曲して密着し、該補強板７の両側に配置した座金１２の挿通孔１６にアンカーボルト１３を差し込み、これを覆工壁４に打ち込んで、補強板７を天端部に取付ける
この場合、補強板７は軽量で適度な可撓性を有するから、前記取付け作業を容易に行なえる。 The liner plate 8 of the reinforcing plate 7 is positioned at the top end portion of the covering wall 4 with the water conveyance hole 14 facing the wall surface of the covering wall 4, and the corrugated or sawtooth-shaped communication portion is formed on the covering wall 4. Curved in the circumferential direction along the wall surface and closely adhered, and the anchor bolts 13 are inserted into the insertion holes 16 of the washers 12 arranged on both sides of the reinforcing plate 7, and this is driven into the lining wall 4. In this case, the reinforcing plate 7 is lightweight and has an appropriate flexibility, so that the attaching operation can be easily performed.

この後、前記補強板７の両端部上に、導水孔１４を覆工壁４の壁面に向けて次の補強板７，７の上側端部を重合し、その重合部にアンカーボルト１３を挿通して覆工壁４に打ち込み、これらを固定する。
そして、前記補強板７，７を覆工壁４の壁面に沿って円周方向に配置し、その下側端部を覆工壁４の壁面に密着して配置し、かつ該補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成し、該空隙部１５を漏水樋または漏水溜りとして機能させる。 Thereafter, the upper end portions of the next reinforcing plates 7 and 7 are overlapped on both ends of the reinforcing plate 7 with the water guide holes 14 facing the wall surface of the lining wall 4, and the anchor bolts 13 are inserted into the overlapping portions. Then, they are driven into the lining wall 4 and fixed.
The reinforcing plates 7 and 7 are arranged in the circumferential direction along the wall surface of the lining wall 4, the lower end thereof is arranged in close contact with the wall surface of the lining wall 4, and the reinforcing plate 7, A wedge-shaped gap 15 having a gradually narrow width is formed on the lower side between the lining wall 7 and the lining wall 4, and the gap 15 is made to function as a water leak tank or a water reservoir.

前記密着した補強板７，７の下側端部上に次の補強板７，７の上側端部を重合し、その重合部にアンカーボルト１３を挿通して覆工壁４に打ち込み、これらを固定する。
以降、前記作業をトンネル１の坑内方向に移動して補強板７を取付け、覆工壁４の漏水箇所に対応する所定域に補強板７を被覆し終えたところで、覆工壁４の補修ないし漏水防止作業を終了する。この状況は図１１のようである。 The upper end portion of the next reinforcing plate 7, 7 is overlapped on the lower end portion of the closely attached reinforcing plates 7, 7, and anchor bolts 13 are inserted into the overlapped portion and driven into the lining wall 4. Fix it.
Thereafter, the work is moved in the direction of the tunnel 1 in the tunnel 1 to attach the reinforcing plate 7, and when the reinforcing plate 7 is covered in a predetermined area corresponding to the water leakage location of the lining wall 4, Complete the work to prevent water leakage. This situation is as shown in FIG.

補強板７の取付け後、覆工壁４の例えば劣化に伴いクラックから漏れ出た漏水は、覆工壁４に面する補強板７の一方のライナープレート８上に流下し、該ライナープレート８と覆工壁４との間の空隙部１５に滞留する。
そして、空隙部１５に所定量の漏水が滞留すると、この漏水はライナープレート８に形成した導水孔１４から補強板７の補強凸部１１内に流入し、該凸部１１内を覆工壁４の円周方向に沿って下方へ移動する。
その際、補強凸部１１内は一様な中空断面の流路を形成するから、漏水は一方向に円滑かつ速やかに移動し、その下端部から直下の空隙部１５に流出する。 After the reinforcement plate 7 is attached, the water leaked from the crack due to the deterioration of the lining wall 4, for example, flows down onto one liner plate 8 of the reinforcement plate 7 facing the lining wall 4. It stays in the space 15 between the lining wall 4.
When a predetermined amount of water leaks in the gap 15, the water leaks from the water guide holes 14 formed in the liner plate 8 into the reinforcing protrusion 11 of the reinforcing plate 7, and the lining wall 4 passes through the protrusion 11. It moves downward along the circumferential direction.
In that case, since the inside of the reinforcement convex part 11 forms the flow path of a uniform hollow cross section, a water leak moves smoothly and rapidly to one direction, and flows out into the space | gap part 15 immediately below from the lower end part.

図１２乃至図１４は本発明の別の基本形態を示し、この基本形態は合成樹脂製のコアプレート１０に互いに同形断面の波形ないし鋸歯状断面の多数の補強凸部１７，１８を間隔を置いて突出成形し、かつこれらの補強凸部１７，１８をコアプレート１０の長さ方向または長さ方向と直交方向に突出成形するとともに、前記補強凸部１７，１８の波形ないし鋸歯状部の位相を互いにずらせて配置し、つまり複列千鳥状に配置して、補強板７の内部を中空かつ連通可能に構成している。
そして、前記補強凸部１７，１８の平坦な先端部１７ａ，１８ａをライナープレート８の内面に接着ないし溶着し、補強凸部１７，１８の基部であるコアプレート１０をライナープレート８の上面に接着ないし溶着している。 FIGS. 12 to 14 show another basic form of the present invention. In this basic form, a plurality of reinforcing convex parts 17 and 18 having a corrugated or sawtooth cross section having the same cross section are spaced from each other on a core plate 10 made of synthetic resin. And projecting the reinforcing projections 17 and 18 in the length direction of the core plate 10 or in the direction orthogonal to the length direction, and corrugating or the phase of the sawtooth portion of the reinforcement projections 17 and 18. Are arranged so as to be shifted from each other, that is, arranged in a double-row zigzag pattern so that the inside of the reinforcing plate 7 is hollow and can be communicated.
Then, the flat front end portions 17 a and 18 a of the reinforcing convex portions 17 and 18 are bonded or welded to the inner surface of the liner plate 8, and the core plate 10 that is the base of the reinforcing convex portions 17 and 18 is bonded to the upper surface of the liner plate 8. Or welded.

前記補強板７を使用して覆工壁４の壁面を補強する場合は、トンネル１の内空５の断面形状と作業条件に応じて、例えば製造工場で補強板７を適宜形状寸法に裁断し、これを施工現場へ搬送し、施工現場で覆工壁４のクラック等による漏水位置と状況に応じて、前記裁断した補強板７の一方のライナープレート８および／または補強凸部１７，１８の先端部１７ａ，１８ａに所要数の導水孔１４を適宜工具によって孔明けする。   When the reinforcing plate 7 is used to reinforce the wall surface of the lining wall 4, the reinforcing plate 7 is appropriately cut into a shape and dimension at a manufacturing plant, for example, according to the cross-sectional shape of the inner space 5 of the tunnel 1 and the working conditions. Then, this is transported to the construction site, and the liner plate 8 of the cut reinforcing plate 7 and / or the reinforcing projections 17 and 18 of the cut reinforcing plate 7 according to the leakage position and the situation due to cracks or the like of the lining wall 4 at the construction site. A necessary number of water guide holes 14 are drilled in the tip portions 17a and 18a with a tool as appropriate.

そして、前記導水孔１４を覆工壁４の壁面に向けて補強板７のライナープレート８を覆工壁４の天端部に位置付け、かつ覆工壁４の壁面に沿って円周方向に湾曲して密着し、該補強板７の両側に配置した座金１２の挿通孔１６にアンカーボルト１３を差し込み、これを覆工壁４に打ち込んで、補強板７を天端部に取付ける。この場合、補強板７は軽量で適度な可撓性を有するから、前記取付け作業を容易に行なえる。   Then, the liner plate 8 of the reinforcing plate 7 is positioned at the top end portion of the lining wall 4 with the water conduction hole 14 facing the lining wall 4, and curved in the circumferential direction along the lining wall 4 wall surface. Then, the anchor bolt 13 is inserted into the insertion hole 16 of the washer 12 disposed on both sides of the reinforcing plate 7 and driven into the lining wall 4 to attach the reinforcing plate 7 to the top end. In this case, since the reinforcing plate 7 is light and has an appropriate flexibility, the attaching operation can be easily performed.

この場合、補強板７は多数の補強凸部１７，１８を複列千鳥状に配置し、補強凸部１７，１８同士を比較的粗に配置して、それらの空隙を連通させており、しかも補強凸部１７，１８の配置状態によって、補強板７の連通状態や湾曲方向に制約を伴なわないから、補強板７を覆工壁４の壁面に円周方向に配置したり、トンネル１の坑内方向に配置しても良く、そのように構成することで補強板７の施工上の自由度を得られる。   In this case, the reinforcing plate 7 has a large number of reinforcing projections 17 and 18 arranged in a double-row zigzag pattern, the reinforcing projections 17 and 18 are arranged relatively coarsely, and these gaps are communicated with each other. Depending on the arrangement state of the reinforcing projections 17 and 18, there is no restriction on the communication state and the bending direction of the reinforcing plate 7, so that the reinforcing plate 7 can be arranged on the wall surface of the lining wall 4 in the circumferential direction, You may arrange | position in a pit direction, and the freedom degree on the construction of the reinforcement board 7 is acquired by comprising in that way.

この後、前記補強板７の両端部上に、導水孔１４を覆工壁４の壁面に向けて次の補強板７，７の上側端部を重合し、その重合部にアンカーボルト１３を挿通して覆工壁４に打ち込み、これらを固定する。
そして、前記補強板７，７を覆工壁４の壁面に沿って円周方向に配置し、その下側端部を覆工壁４の壁面に密着して配置し、かつ該補強板７，７と覆工壁４との間に下側に漸次幅狭の楔形の空隙部１５を形成し、該空隙部１５を漏水樋または漏水溜りとして機能させる。 Thereafter, the upper end portions of the next reinforcing plates 7 and 7 are overlapped on both ends of the reinforcing plate 7 with the water guide holes 14 facing the wall surface of the lining wall 4, and the anchor bolts 13 are inserted into the overlapping portions. Then, they are driven into the lining wall 4 and fixed.
The reinforcing plates 7 and 7 are arranged in the circumferential direction along the wall surface of the lining wall 4, the lower end thereof is arranged in close contact with the wall surface of the lining wall 4, and the reinforcing plate 7, A wedge-shaped gap 15 having a gradually narrow width is formed on the lower side between the lining wall 7 and the lining wall 4, and the gap 15 is made to function as a water leak tank or a water reservoir.

前記密着した補強板７，７の下側端部上に次の補強板７，７の上側端部を重合し、その重合部にアンカーボルト１３を挿通して覆工壁４に打ち込み、これらを固定する。
以降、前記作業をトンネル１の坑内方向に移動して補強板７を取付け、覆工壁４の漏水箇所に対応する所定域に補強板７を被覆し終えたところで、覆工壁４の補修ないし漏水防止作業を終了する。この状況は図１４のようである。 The upper end portion of the next reinforcing plate 7, 7 is overlapped on the lower end portion of the closely attached reinforcing plates 7, 7, and anchor bolts 13 are inserted into the overlapped portion and driven into the lining wall 4. Fix it.
Thereafter, the work is moved in the direction of the tunnel 1 in the tunnel 1 to attach the reinforcing plate 7, and when the reinforcing plate 7 is covered in a predetermined area corresponding to the water leakage location of the lining wall 4, Complete the work to prevent water leakage. This situation is as shown in FIG.

補強板７の取付け後、覆工壁４の例えば劣化に伴いクラックから漏れ出た漏水は、覆工壁４に面する補強板７の一方のライナープレート８上に流下し、該ライナープレート８と覆工壁４との間の空隙部１５に滞留する。
そして、空隙部１５に所定量の漏水が滞留すると、この漏水はライナープレート８に形成した導水孔１４から補強板７の補強凸部１７，１８内に流入し、この内部を移動後補強凸部１７，１８外に流出し、周辺の補強凸部１７，１８に流入して覆工壁４の円周方向に沿って下方へ移動する。 After the reinforcement plate 7 is attached, the water leaked from the crack due to the deterioration of the lining wall 4, for example, flows down onto one liner plate 8 of the reinforcement plate 7 facing the lining wall 4. It stays in the space 15 between the lining wall 4.
When a predetermined amount of water leaks in the gap 15, the water leaks into the reinforcing protrusions 17 and 18 of the reinforcing plate 7 from the water guide holes 14 formed in the liner plate 8, and the reinforcing protrusions after moving through the inside. 17 and 18, flows out into the peripheral reinforcing projections 17 and 18, and moves downward along the circumferential direction of the lining wall 4.

このように漏水が補強板７の内部を移動する際、補強凸部１７，１８に接触して四方に分流し、流速ないし流量を抑制されて長い移動路を長い時間を掛けて移動し、直下の空隙部１５へ流出する。
したがって、補強板７は前述の基本形態と同様に漏水の流速ないし流量を制御し、その排水量を調整し得るから、漏水量が増える雪解け時期や雨期に有効に対応し得る。
こうして覆工壁４の円周方向の最下位置の補強板７から流下した漏水は、トンネル１内の排水溝（図示略）に導かれてトンネル１の外部へ排出される。 In this way, when water leaks inside the reinforcing plate 7, it contacts the reinforcing projections 17, 18 and is divided into four directions. The flow velocity or flow rate is suppressed, the long moving path is moved over a long time, and immediately below. Flows out into the gap 15.
Therefore, since the reinforcing plate 7 can control the flow rate or flow rate of water leakage and adjust the amount of drainage in the same manner as the basic form described above, it can effectively cope with the thaw time and the rainy season when the water leakage amount increases.
Thus, the water leaked from the reinforcing plate 7 at the lowest position in the circumferential direction of the lining wall 4 is guided to a drainage groove (not shown) in the tunnel 1 and discharged to the outside of the tunnel 1.

図１５乃至図２１は本発明の実施形態を示し、この実施形態は第１および第２補強板７ａ，７ｂを有し、一対の第１補強板７ａ，７ａを天端部に隣接して配置し、その下側端部に第２補強板７ｂ，７ｂを配置している。
前記第１および第２補強板７ａ，７ｂは同形の補強板７，７を備え、それらの一側面、実施形態では覆工壁４側にゴム等の弾性材からなるシールパッキング１９，２０，２１を接着剤または両面連結シートを介して取付けている。 FIG. 15 thru | or FIG. 21 shows embodiment of this invention, This embodiment has 1st and 2nd reinforcement board 7a, 7b, and arrange | positions a pair of 1st reinforcement board 7a, 7a adjacent to a top end part. And the 2nd reinforcement board 7b, 7b is arrange | positioned in the lower end part.
The first and second reinforcing plates 7a and 7b are provided with the same shape of the reinforcing plates 7 and 7, and seal packings 19, 20 and 21 made of an elastic material such as rubber on one side thereof, in the embodiment, on the side of the lining wall 4 are used. Are attached via an adhesive or a double-sided connecting sheet.

このうち、第１補強板７ａは補強板７の一側面の長さ方向の片側に、合成樹脂製の矩形の連結シート２２を接着し、その外側半部を補強板７の外側に突出し、この突出部２２ａの粘着面に剥離片２３を貼り付けている。
前記連結シート２２と補強板７の両側部に一対のシールパッキング１９を接着剤を用いて平行に接着し、その一端を補強板７の外側に突出している。
そして、前記シールパッキング１９，１９の他端を補強板７の他端部の内側に配置し、該シールパッキング１９，１９の他端部にシールパッキング２０を直交配置している。 Among these, the 1st reinforcement board 7a adhere | attaches the rectangular connection sheet | seat 22 made from a synthetic resin to the one side of the length direction of one side of the reinforcement board 7, the outer half part protrudes the outer side of the reinforcement board 7, The peeling piece 23 is affixed on the adhesive surface of the protrusion 22a.
A pair of seal packings 19 are bonded in parallel to each other on both sides of the connecting sheet 22 and the reinforcing plate 7 using an adhesive, and one end thereof protrudes outside the reinforcing plate 7.
The other end of the seal packing 19, 19 is arranged inside the other end of the reinforcing plate 7, and the seal packing 20 is arranged orthogonal to the other end of the seal packing 19, 19.

前記シールパッキング２０はシールパッキング１９と同幅に形成され、これを接着剤を用いて補強板７上に接着し、その内側面の両端部に前記シールパッキング１９，１９の他端部を接合していて、これらのシールパッキング１９，１９，２０を補強板７上に逆コ字形状ないしＵ字形状に配置している。   The seal packing 20 is formed to have the same width as the seal packing 19 and is adhered to the reinforcing plate 7 using an adhesive, and the other end portions of the seal packings 19 and 19 are joined to both end portions of the inner surface thereof. These seal packings 19, 19, and 20 are arranged in an inverted U shape or U shape on the reinforcing plate 7.

前記シールパッキング１９，２０の断面は横長矩形に形成され、その板厚は補強板７と略同厚に形成され、第１補強板７ａを覆工壁４の壁面に設置時、覆工壁４の壁面と一対のシールパッキング１９と、シールパッキング２０と第１補強板７ａとの間に導水スペース２４を区画形成可能にし、該スペース２４に所定の保温効果と通水スペースを確保し、覆工壁４から浸入する漏水２５を収容かつ通水可能にし、また漏水２５の凍結ないし氷柱の形成を防止するとともに、漏水２５に含有するカルシウム成分の凝集ないし凝結による目詰まりを防止可能にしている。   The cross section of the seal packings 19 and 20 is formed in a horizontally long rectangle, the plate thickness thereof is formed to be substantially the same as that of the reinforcing plate 7, and when the first reinforcing plate 7a is installed on the wall surface of the lining wall 4, the lining wall 4 The wall 24 and the pair of seal packings 19, the water guide space 24 can be partitioned between the seal packing 20 and the first reinforcing plate 7 a, and a predetermined heat retaining effect and water passing space are secured in the space 24. The leakage water 25 that enters from the wall 4 can be accommodated and passed, and the leakage of the leakage water 25 or the formation of ice columns can be prevented, and clogging due to aggregation or condensation of calcium components contained in the leakage water 25 can be prevented.

また、前記第２補強板７ｂは補強板７の一側面の長さ方向に、前記シールパッキング２１，２１を平行に配置し、その対向間隔はシールパッキング１９，１９の対向間隔と同一に形成され、該シールパッキング２１，２１の一端を補強板７の端部の内側に配置し、該補強板７の端部に前記突出部２２ａと同幅のブランク部２６を形成し、該ブランク部２６上に前記突出部２２ａを重合し、前記シールパッキング１９，２１の対向端部を係合可能にしている。   The second reinforcing plate 7b has the seal packings 21 and 21 arranged in parallel in the length direction of one side surface of the reinforcing plate 7, and the opposing interval thereof is the same as the opposing interval of the seal packings 19 and 19. One end of each of the seal packings 21 and 21 is disposed inside the end portion of the reinforcing plate 7, and a blank portion 26 having the same width as the protruding portion 22 a is formed at the end portion of the reinforcing plate 7. The protrusions 22a are superposed on each other so that the opposing ends of the seal packings 19 and 21 can be engaged.

前記シールパッキング２１はシールパッキング１９と同幅に形成され、その断面は横長矩形に形成されていて、これを接着剤を用いて補強板７上に接着し、その板厚を補強板７と略同厚に形成し、第２補強板７ｂを覆工壁４の壁面に設置時、覆工壁４の壁面と一対のシールパッキング２１と、第２補強板７ｂとの間に導水スペース２７を区画形成可能にし、該スペース２７に所定の保温効果と通水スペ−スを確保し、覆工壁４から浸入する漏水２５を収容かつ通水可能にし、また漏水２５の凍結ないし氷柱の形成を防止するとともに、漏水２５に含有するカルシウム成分の凝集ないし凝結による目詰まりを防止可能にしている。
したがって、この実施形態では導水スペース２４，２７によって、第１および第２補強板７ｂに前述のような導水孔１４を要しない。 The seal packing 21 is formed to have the same width as the seal packing 19, and the cross section thereof is formed in a horizontally long rectangle, which is adhered to the reinforcing plate 7 using an adhesive, and the thickness thereof is substantially the same as that of the reinforcing plate 7. When the second reinforcing plate 7b is installed on the wall surface of the lining wall 4, the water guide space 27 is defined between the wall surface of the lining wall 4, the pair of seal packings 21, and the second reinforcing plate 7b. It is possible to form, secure a predetermined heat retaining effect and water passing space in the space 27, and allow the water leakage 25 entering from the lining wall 4 to be accommodated and water passing, and prevent the water leakage 25 from freezing or the formation of icicles. In addition, clogging due to aggregation or aggregation of calcium components contained in the water leakage 25 can be prevented.
Therefore, in this embodiment, the water guiding holes 24 and 27 do not require the water guiding holes 14 as described above in the first and second reinforcing plates 7b.

このように構成した実施形態は、第１および第２補強板７ａ，７ｂの製作を要し、天端部に設置する第１補強板７ａを製作する場合は、補強板７の一側面の片側端部に連結シート２２を接着し、該シ−ト２２の半部を補強板７の端部から外側に突出し、その突出部２２ａの粘着面に剥離片２３を貼り付けて置く。
この後、補強板７の連結シート２２側を除く周囲と連結シ−ト２２上に接着剤を塗布してシールパッキング１９，１９，２０を貼り付け、これらを逆コ字形状またはＵ字形状に配置する。 The embodiment configured as described above requires the manufacture of the first and second reinforcing plates 7a and 7b. When the first reinforcing plate 7a to be installed at the top end is manufactured, one side of one side of the reinforcing plate 7 is provided. The connecting sheet 22 is bonded to the end portion, and a half portion of the sheet 22 protrudes outward from the end portion of the reinforcing plate 7, and a peeling piece 23 is attached to the adhesive surface of the protruding portion 22a.
Thereafter, an adhesive is applied to the periphery of the reinforcing plate 7 excluding the connecting sheet 22 side and the connecting sheet 22, and the seal packings 19, 19, and 20 are attached, and these are formed into an inverted U shape or U shape. Deploy.

また、覆工壁４の両側壁に設置する第２補強板７ｂを製作する場合は、補強板７の一側面の長さ方向に一対のシールパッキング２１，２１を平行に貼り付け、かつその対向間隔を前記シールパッキング１９，１９と同間隔に貼り付け、その片側端部に突出部２２ａと同幅のブランク部２６を形成する。   When the second reinforcing plate 7b to be installed on both side walls of the lining wall 4 is manufactured, a pair of seal packings 21 and 21 are attached in parallel in the length direction of one side surface of the reinforcing plate 7 and opposed to each other. A gap is pasted at the same spacing as the seal packings 19, 19, and a blank portion 26 having the same width as the protruding portion 22a is formed at one end thereof.

このように第１および第２補強板７ａ，７ｂの製作は補強板７の他に、連結シート２２や剥離片２３、シールパッキング１９，２０，２１を要するが、これらは構成が簡単で容易に製作でき、またその作業は接着剤を塗布し、または連結シ−トを貼り付けて簡単に行なえるから、工場またはトンネル１の作業現場で容易かつ安価に製作できる。   As described above, the manufacture of the first and second reinforcing plates 7a and 7b requires the connecting sheet 22, the peeling piece 23, and the seal packings 19, 20, and 21 in addition to the reinforcing plate 7, but these are simple and easy to configure. Since it can be manufactured and can be easily performed by applying an adhesive or attaching a connecting sheet, it can be easily and inexpensively manufactured at the factory or the work site of the tunnel 1.

こうして製作した第１および第２補強板７ａ，７ｂは、予めそれらを組み付けて作業現場へ搬送することも可能であるが、それらを組み付けずに作業現場へ搬送し、実際の取付け時に適宜組み付ければ、第１および第２補強板７ａ，７ｂの取扱いが容易になり、搬送が容易になるとともに、トンネル１へ設置する際の作業性が向上する。   The first and second reinforcing plates 7a and 7b manufactured in this way can be assembled in advance and transported to the work site, but they can be transported to the work site without being assembled, and can be assembled as appropriate during actual installation. For example, the first and second reinforcing plates 7a and 7b can be easily handled, transported, and workability when installed in the tunnel 1 is improved.

こうして製作した第１および第２補強板７ａ，７ｂをトンネル１に設置する場合は、例えば一組の第１補強板７ａ，７ａをトンネル１の円周方向に沿って天端部に設置し、その両側に第２補強板７ｂ，７ｂを隣接して設置する。   When the first and second reinforcing plates 7a and 7b thus manufactured are installed in the tunnel 1, for example, a pair of first reinforcing plates 7a and 7a are installed at the top end along the circumferential direction of the tunnel 1, The second reinforcing plates 7b and 7b are installed adjacent to both sides.

先ず、第１補強板７ａを天端部に設置する場合は、シールパッキング１９，１９，２０を上向き、つまり覆工壁４側に向けて第１補強板７ａを保持し、前記パッキング１９，１９，２０を覆工壁４の壁面に押し当て、かつ一方のシールパッキング２０を天端部に位置付け後、シールパッキング２０の両端部にアンカーボルト１３を差し込み、これを覆工壁４に打ち込んで固定する。
このようにすると、シールパッキング２０が若干押し縮められ、覆工壁４表面の凹凸部を許容して密着して取付けられ、覆工壁４とシールパッキング２０との間の水密性が得られる。 First, when the first reinforcing plate 7a is installed at the top end portion, the first reinforcing plate 7a is held with the seal packings 19, 19, 20 facing upward, that is, toward the lining wall 4, and the packings 19, 19 , 20 are pressed against the wall surface of the lining wall 4 and one seal packing 20 is positioned at the top end portion, and then anchor bolts 13 are inserted into both end portions of the seal packing 20 and driven into the lining wall 4 for fixing. To do.
If it does in this way, seal packing 20 will be slightly shrunk, and the uneven | corrugated | grooved part of the surface of the lining wall 4 will be accept | permitted and attached, and the watertightness between the lining wall 4 and the seal packing 20 will be acquired.

次に、第１補強板７ａの剥離片２３を引き剥がし、その粘着面を表出させた後、シールパッキング２１，２１を上向き、つまり覆工壁４側に向けて第２補強板７ｂを保持し、そのブランク部２６を前記表出した粘着面に位置付けて重合し、前記ブランク部２６を粘着面に押し当て、かつシールパッキング２１，２１の上側端部をシールパッキング１９，１９の下端部に押し当てて、それらを接合する。   Next, after peeling off the peeling piece 23 of the first reinforcing plate 7a and exposing the adhesive surface, the second reinforcing plate 7b is held with the seal packings 21 and 21 facing upward, that is, toward the lining wall 4 side. Then, the blank portion 26 is positioned and superposed on the exposed adhesive surface, the blank portion 26 is pressed against the adhesive surface, and the upper ends of the seal packings 21 and 21 are placed on the lower ends of the seal packings 19 and 19. Press to join them.

そして、第１補強板７ａと第２補強板７ｂの接合部のシールパッキング１９，２１にアンカーボルト１３，１３を差し込み、これを覆工壁４に打ち込んで固定した後、第２補強板７ｂの下端部のシールパッキング２１にアンカーボルト１３を差し込み、これを覆工壁４に打ち込んで固定する。
このようにすると、シールパッキング１９，２１が若干押し縮められ、覆工壁４表面の凹凸部を許容して密着して取付けられ、補強板７を直接設置する場合に比べて作業性が向上するとともに、覆工壁４とシールパッキング１９，２１との間の水密性が得られる。 Then, after inserting the anchor bolts 13 and 13 into the seal packings 19 and 21 at the joint between the first reinforcing plate 7a and the second reinforcing plate 7b and driving them into the lining wall 4 and fixing them, the second reinforcing plate 7b The anchor bolt 13 is inserted into the seal packing 21 at the lower end, and this is driven into the lining wall 4 and fixed.
In this way, the seal packings 19 and 21 are slightly shrunk, allowing the uneven portions on the surface of the lining wall 4 to be closely attached and attached, and the workability is improved as compared with the case where the reinforcing plate 7 is directly installed. At the same time, watertightness between the lining wall 4 and the seal packings 19 and 21 is obtained.

こうして、覆工壁４の片側の円周方向に天端部から側壁に亘って第１および第２強板７ａ，７ｂを取付け後、覆工壁４の他側の円周方向に天端部から側壁に亘って、前述と同様の要領で第１および第２強板７ａ，７ｂを取付ける。
その際、第１補強板７ａ，７ａ同士は天端部に隣接して取付けられ、シールパッキング２０，２０同士が密着して取付けられ、補強板７を直接設置する場合に比べて作業性が向上するとともに、当該部の水密性が形成される。 Thus, after attaching the first and second strong plates 7a, 7b from the top end to the side wall in the circumferential direction on one side of the lining wall 4, the top end in the circumferential direction on the other side of the lining wall 4 The first and second strong plates 7a and 7b are attached in the same manner as described above from the side to the side wall.
At that time, the first reinforcing plates 7a and 7a are attached adjacent to the top end, the seal packings 20 and 20 are attached in close contact with each other, and workability is improved as compared with the case where the reinforcing plate 7 is directly installed. In addition, the water tightness of the part is formed.

このように第１および第２補強板７ａ，７ｂの取付けは、それらを覆工壁４の円周方向に配置し、それらの接合部を接合または重合して接着し、その周辺にアンカーボルト１３を打ち込んで固定する簡単な作業であるから、これを容易かつ速やかに行なえ工費の低減と工期の短縮化を図れる。
そして、第１および第２補強板７ａ，７ｂの取付け後、覆工壁４の劣化状況に応じて新たな第１および第２強板７ａ，７ｂを前記補強板７ａ，７ｂに隣接して取付ける。 As described above, the first and second reinforcing plates 7a and 7b are attached in the circumferential direction of the lining wall 4 and bonded or superposed and bonded to each other, and the anchor bolt 13 is attached to the periphery thereof. Since this is a simple operation for driving and fixing, it is possible to easily and quickly perform this operation, thereby reducing the construction cost and the construction period.
Then, after the first and second reinforcing plates 7a and 7b are attached, new first and second strong plates 7a and 7b are attached adjacent to the reinforcing plates 7a and 7b in accordance with the deterioration state of the lining wall 4. .

こうして、第１および第２補強板７ａ，７ｂの取付け後のトンネル１の補修状況は図１５，２０，２１のようで、覆工壁４の壁面はシールパッキング１９，２０，２１を介して第１および第２補強板７ａ，７ｂで被覆されているから、覆工壁４の支持強度を増強し、その剥落を防止するとともに、覆工壁４のクラックからの漏水を防止する。   Thus, the repair situation of the tunnel 1 after the attachment of the first and second reinforcing plates 7a, 7b is as shown in FIGS. 15, 20, and 21, and the wall surface of the lining wall 4 is changed to the first via the seal packings 19, 20, and 21. Since it is covered with the first and second reinforcing plates 7a and 7b, the supporting strength of the lining wall 4 is increased, and the peeling of the lining wall 4 is prevented, and the leakage of water from the crack of the lining wall 4 is prevented.

また、覆工壁４の壁面に第１および第２補強板７ａ，７ｂのシールパッキング１９，２０，２１が密着して取付けられ、それらの水密性を維持するとともに、シールパッキング１９，２０，２１と補強板７と覆工壁４との間に中空の導水スペース２４，２７が連通して形成され、該導水スペース２４，２７は一端が天端部のシールパッキング２０，２０によって閉塞され、その他端が下端部に開口している。
したがって、導水スペース２４，２７は周囲をシールパッキング１９，２０，２１によって囲繞され、かつ外部から空気が出入りするから、覆工壁４に補強板７を設置した場合に比べて保温性が向上する。 Further, the seal packings 19, 20, and 21 of the first and second reinforcing plates 7a and 7b are attached to the wall surface of the lining wall 4 in close contact with each other to maintain their watertightness and the seal packings 19, 20, and 21. Between the reinforcing plate 7 and the lining wall 4, hollow water guide spaces 24, 27 are formed to communicate with each other, one end of each of the water guide spaces 24, 27 is closed by the seal packing 20, 20 at the top end, The end is open at the lower end.
Therefore, since the water guide spaces 24 and 27 are surrounded by the seal packings 19, 20, and 21 and air enters and exits from the outside, the heat retaining property is improved as compared with the case where the reinforcing plate 7 is installed on the lining wall 4. .

このような状況において、例えば覆工壁４の劣化に伴いクラックから漏れ出た漏水２５は、直下の導水スペース２４，２７を経て第１または第２補強板７ａ，７ｂ上に流下し、該第１または第２補強板７ａ，７ｂに滞留することなく導水スペース２４，２７に沿って下方へ移動し、下端の第２補強板７ｂ，７ｂの開口部から外部へ排出され、覆工壁４の下部側面に沿って流下する。
この場合、連結シート２２は薄厚であるから、第１補強板７ａ上の突出によって導水スペース２４の通水性を損なうことはない。 In such a situation, for example, the water leakage 25 leaked from the crack due to the deterioration of the lining wall 4 flows down onto the first or second reinforcing plate 7a, 7b via the water guiding spaces 24, 27 immediately below, and the first It moves downward along the water guiding spaces 24, 27 without staying in the first or second reinforcing plate 7a, 7b, and is discharged to the outside from the opening of the second reinforcing plate 7b, 7b at the lower end. It flows down along the lower side.
In this case, since the connecting sheet 22 is thin, the water permeability of the water guide space 24 is not impaired by the protrusion on the first reinforcing plate 7a.

したがって、漏水２５は前述の保温効果と相俟って、第１または第２補強板７ａ，７ｂ上で滞留して凍結したり、第１または第２補強板７ａ，７ｂから漏出して氷柱を形成することがなく、トンネル１坑内の障害物形成の不安を払拭し、坑内を移動する車両の交通の安全性を確保する。   Accordingly, the water leakage 25 stays on the first or second reinforcing plate 7a, 7b and freezes, or leaks from the first or second reinforcing plate 7a, 7b in combination with the above-described heat retaining effect. It eliminates the fear of obstacle formation in the tunnel 1 mine without forming, and ensures the safety of traffic of vehicles moving in the mine.

このように本発明のトンネルの剥落防護構造は、簡単な構成で安価かつ容易に施工でき、トンネルの覆工壁による防護壁を補強し剥落を防止するとともに、防護壁の断熱性ないし保温性を向上して氷柱の発生や結露の氷結を防止し、トンネル内を通行する自動車の安全を確保するとともに、防護壁の漏水状況に応じて有効な漏水対策を施せるから、例えば既設トンネルの補修に好適である。   As described above, the tunnel peeling protection structure of the present invention can be easily and inexpensively constructed with a simple structure, reinforces the protective wall by the tunnel lining wall and prevents peeling, and also provides heat insulation or heat insulation of the protective wall. Improved to prevent the formation of icicles and dew condensation, ensure the safety of automobiles passing through the tunnel, and take effective measures against water leakage according to the leakage status of the protective wall, suitable for repairing existing tunnels, for example It is.

１ トンネル
４ 防護壁（覆工壁）
７ 補強板
７ａ 第１補強板
７ｂ 第２補強板
８，９ ライナープレート
１０ コアプレート 1 Tunnel 4 Protective wall (lining wall)
7 Reinforcing plate 7a First reinforcing plate 7b Second reinforcing plate 8, 9 Liner plate 10 Core plate

１１ 補強凸部
１３ アンカーボルト
１４ 導水孔
１５ 空隙部
１７，１８ 補強凸部 DESCRIPTION OF SYMBOLS 11 Reinforcement convex part 13 Anchor bolt 14 Water conveyance hole 15 Cavity part 17, 18 Reinforcement convex part

１９，２０，２１ シールパッキング
２２ 連結シート
２４，２７ 導水スペース
２５ 漏水 19, 20, 21 Seal packing 22 Connection sheet 24, 27 Water transfer space 25 Water leakage

Claims (7)

トンネル内の天端部を含む防護壁の壁面に合成樹脂製の複数の補強板を円周方向に沿って固定し、防護壁のクラックから漏出した漏水を補強板を介して流下可能にしたトンネルの剥落防護構造において、前記補強板は内部に合成樹脂製の補強凸部を多数配置した中空構造とし、該補強凸部を挟む補強板の両側に合成樹脂製のライナープレートを配置し、前記補強板の円周方向に沿う両側に弾性材からなるシールパッキングを取付け、該シールパッキングを防護壁の壁面に固定し、各補強板に前記シールパッキングで両側を区画した中空の導水スペースを形成し、各補強板の導水スペースを円周方向に連通可能に配置し、防護壁のクラックから漏出した漏水を前記導水スペースに導入可能に設け、該漏水を導水スペースに沿って下方へ流下可能にしたことを特徴とするトンネルの剥落防護構造。   A tunnel in which multiple reinforcing plates made of synthetic resin are fixed along the circumferential direction on the wall of the protective wall including the top end in the tunnel, and water leaked from cracks in the protective wall can flow down through the reinforcing plate In the peeling protection structure, the reinforcing plate has a hollow structure in which a number of synthetic resin reinforcing projections are arranged, and a synthetic resin liner plate is arranged on both sides of the reinforcing plate that sandwiches the reinforcing projections. Attach seal packing made of elastic material on both sides along the circumferential direction of the plate, fix the seal packing to the wall surface of the protective wall, and form a hollow water guide space partitioned on both sides by the seal packing on each reinforcing plate, The water guide space of each reinforcing plate is arranged so that it can communicate in the circumferential direction, and water leaked from the crack of the protective wall can be introduced into the water guide space, and the water leak can flow downward along the water guide space Flaking protective structure of the tunnel, characterized in that the. 円周方向に隣接して配置する第１および第２補強板を設け、第１補強板の両側にシールパッキングを取付け、その一側端部に薄厚の連結シートを突設するとともに、第２補強板の両側にシールパッキングを取付け、その一端部に平坦なブランク部を設け、該ブランク部に前記連結シートの突出部を重合して固定し、第１および第２補強板を接続するとともに、それらの両側のシールパッキングの端部を接合して配置した請求項１記載のトンネルの剥落防護構造。   First and second reinforcing plates arranged adjacent to each other in the circumferential direction are provided, seal packings are attached to both sides of the first reinforcing plate, a thin connecting sheet is provided at one end of the first reinforcing plate, and a second reinforcing plate is provided. Seal packing is attached to both sides of the plate, a flat blank portion is provided at one end thereof, and the protruding portion of the connecting sheet is overlapped and fixed to the blank portion, and the first and second reinforcing plates are connected, 2. The tunnel peeling protection structure according to claim 1, wherein ends of the seal packing on both sides of the tunnel are joined and arranged. 前記第１および第２補強板のシールパッキングをアンカーボルトを介して防護壁の壁面に固定した請求項１記載のトンネルの剥落防護構造。   The tunnel peeling protection structure according to claim 1, wherein the seal packing of the first and second reinforcing plates is fixed to a wall surface of the protection wall via an anchor bolt. 前記第１補強板の他側端部に弾性材からなるシールパッキングを取付け、該シールパッキングを両側のシールパッキングの端部に接合して配置し、これらのシールパッキングと第１補強板と防護壁の壁面との間に、逆コ字形状ないしＵ字形状の導水スペースを区画形成可能にした請求項２記載のトンネルの剥落防護構造。   A seal packing made of an elastic material is attached to the other side end portion of the first reinforcing plate, and the seal packing is disposed so as to be joined to the end portions of the seal packing on both sides, and the seal packing, the first reinforcing plate, and the protective wall. 3. The tunnel peeling protection structure according to claim 2, wherein a reverse U-shaped or U-shaped water guide space can be defined between the wall and the wall. 一組の第１補強板をトンネル内の防護壁の天端部に配置し、それらの他側端部のシールパッキングを接合して配置し、前記第１補強板の一側端部に第２補強板を配置した請求項４記載のトンネルの剥落防護構造。   A set of first reinforcing plates is arranged at the top end portion of the protective wall in the tunnel, and seal packings of the other side end portions are joined and arranged, and a second side is attached to one side end portion of the first reinforcing plate. 5. The tunnel peeling protection structure according to claim 4, wherein a reinforcing plate is disposed. 前記補強凸部を中空の筒状ないし円錐台形状、または波形ないし鋸歯状に突出成形した請求項１記載のトンネルの剥落防護構造。   The tunnel peeling protection structure according to claim 1, wherein the reinforcing convex portion is protruded and formed into a hollow cylindrical shape or a truncated cone shape, or a corrugated shape or a sawtooth shape. 前記シールパッキングの板厚を前記補強板と同厚に形成した請求項１記載のトンネルの剥落防護構造。   2. The tunnel peeling protection structure according to claim 1, wherein the thickness of the seal packing is the same as that of the reinforcing plate.
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