JPH0972185A - Construction method of tunnel - Google Patents
Construction method of tunnelInfo
- Publication number
- JPH0972185A JPH0972185A JP7248744A JP24874495A JPH0972185A JP H0972185 A JPH0972185 A JP H0972185A JP 7248744 A JP7248744 A JP 7248744A JP 24874495 A JP24874495 A JP 24874495A JP H0972185 A JPH0972185 A JP H0972185A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- wall surface
- net
- tunnel wall
- reinforcing body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は山岳トンネル工法等
で硬岩をトンネル掘削する際に好適なトンネル構築方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel construction method suitable for excavating a hard rock by a mountain tunnel method or the like.
【０００２】[0002]
【従来の技術】トンネルを山岳トンネル工法で掘削する
手順は次の通りである。 １．発破あるいは機械式掘削機によりトンネル掘削を行
う。 ２．ピック等によりトンネル壁面の浮石を処理する。 ３．Ｈ型鋼等をトンネル形状に合わせて曲げた鋼製支保
工をトンネル壁面に建て込む。 ４．トンネル壁面にコンクリートを所定の厚さ吹き付け
る。 ５．吹き付けたコンクリート面を貫通させてロックボル
トを打設する。 ６．覆工コンクリートを打設する。 通常は、上記の１〜５の手順をトンネル進行の１．５ｍ
以内毎に繰り返し、後続して６の作業を行う。そして、
このような従来の工法は、ある程度、標準化されている
と取られがちである。2. Description of the Related Art The procedure for excavating a tunnel by the mountain tunnel method is as follows. 1. Tunnel digging by blasting or mechanical excavator. 2. The floating stones on the wall surface of the tunnel are treated with a pick. 3. Steel supports, which are made by bending H-shaped steel and the like in accordance with the tunnel shape, are built into the tunnel wall. 4. Spray concrete on the tunnel wall to the specified thickness. 5. A rock bolt is driven through the sprayed concrete surface. 6. Placing lining concrete. Normally, follow steps 1 to 5 above for 1.5m
Repeat every time, and then perform the work in 6 below. And
Such conventional construction methods are often taken as standardized to some extent.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の工法では、工程数が多くトンネル工事の進行
を早めることができない問題があった。また、硬岩のト
ンネル工事では上記の３から５の作業が不必要な場合が
あり、従来の標準化された手順では不経済となる問題が
あった。本発明は前記事情に鑑み案出されたものであっ
て、本発明の目的は、トンネル工事の進行を早めること
ができ、また、作業時間を短縮し、コストダウンを図れ
るトンネル構築方法を提供することにある。However, such a conventional construction method has a problem in that the number of steps is large and the tunnel construction cannot be accelerated. Further, in hard rock tunnel construction, there are cases where the above work 3 to 5 is unnecessary, and there is a problem that the conventional standardized procedure becomes uneconomical. The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a tunnel construction method capable of accelerating the progress of tunnel construction, shortening the working time, and reducing the cost. Especially.
【０００４】[0004]
【課題を解決するための手段】前記目的を達成するた
め、本発明は、硬岩を発破あるいは機械式掘削機により
トンネル掘削し、掘削され浮石が処理されたトンネル壁
面に覆工コンクリートを打設してトンネルを構築してい
くに際して、可撓性を有し、かつ、トンネル壁面の両側
面の高さ方向中間部から上面に沿って延在させた状態で
小石の落下を防止するに足る引張強度、剪断強度を有す
る合成樹脂製の網状の補強体を用意し、トンネル壁面の
両側面の高さ方向中間部から上面にわたり前記補強体を
延在させ、かつ、補強体にトンネルの壁面に沿った方向
に軸力を与えてトンネル壁面を前記補強体により押え付
け、前記覆工コンクリートをこの網状補強体の上から打
設するようにしたことを特徴とする。In order to achieve the above object, the present invention is to blast hard rock or perform tunnel excavation by a mechanical excavator, and pour lining concrete on a tunnel wall surface where excavated rock is treated. When constructing a tunnel, the tensile strength is flexible and sufficient to prevent pebbles from falling while extending along the upper surface from the middle in the height direction on both sides of the tunnel wall. Prepare a synthetic resin net reinforcement having strength and shear strength, and extend the reinforcement from the middle part in the height direction on both sides of the tunnel wall to the upper surface, and along the tunnel wall along the reinforcement. It is characterized in that the tunnel wall surface is pressed by the reinforcing body by applying an axial force in a different direction, and the lining concrete is placed from above the net-like reinforcing body.
【０００５】また、本発明は、硬岩を発破あるいは機械
式掘削機によりトンネル掘削し、掘削され浮石が処理さ
れたトンネル壁面に覆工コンクリートを打設してトンネ
ルを構築していくに際して、可撓性を有し、かつ、トン
ネル壁面の両側面の高さ方向中間部から上面に沿って延
在させた状態で小石の落下を防止するに足る引張強度、
剪断強度を有する合成樹脂製の棒状あるいは板状の補強
体を用意し、トンネル壁面の両側面の高さ方向中間部か
ら上面にわたり前記補強体を延在させかつ、補強体にト
ンネルの壁面に沿った方向に軸力を与えてトンネル壁面
を前記補強体により押え付け、前記覆工コンクリートを
この補強体の上から打設するようにしたことを特徴とす
る。Further, the present invention is applicable when a hard rock is blasted or a tunnel is excavated by a mechanical excavator, and a lining concrete is placed on the tunnel wall where the excavated rock is treated to construct a tunnel. Tensile strength that has flexibility and is sufficient to prevent pebbles from falling while extending along the upper surface from the middle portion in the height direction on both sides of the tunnel wall surface,
Prepare a synthetic resin rod-shaped or plate-shaped reinforcing body having shear strength, extend the reinforcing body from the middle part in the height direction of both sides of the tunnel wall surface to the upper surface, and extend the reinforcing body along the tunnel wall surface. It is characterized in that an axial force is applied in a different direction to press the wall surface of the tunnel with the reinforcing body, and the lining concrete is placed from above the reinforcing body.
【０００６】また、本発明は、前記補強体がトンネル壁
面の両側面の高さ方向中間部においてトンネル壁面に固
定されていることを特徴とする。また、本発明は、前記
補強体が、トンネルの長手方向に間隔をおいてトンネル
壁面に取り付けられることを特徴とする。Further, the present invention is characterized in that the reinforcing body is fixed to the tunnel wall surface at an intermediate portion in the height direction of both side surfaces of the tunnel wall surface. Further, the present invention is characterized in that the reinforcing body is attached to the tunnel wall surface at intervals in the longitudinal direction of the tunnel.
【０００７】本発明では、従来の浮石処理後に、トンネ
ル壁面を、軸力が与えられた補強体で押え付ける。すな
わち、硬岩のトンネル工事では、トンネル掘削後に落下
する浮石は小さいものが多く、軸力が与えられた補強体
でトンネル壁面を押えつけることで小石の落下を十分に
防げる。従って、トンネル壁面に、軸力を与えて補強体
を取り付けるという簡単な作業により、従来の３〜４、
あるいは、３〜５の作業手順を省くことが可能となり、
トンネルの進行を早め、作業時間の短縮化、コストダウ
ンを図れる。補強体の形状としては、網状、棒状、板状
のもの等が使用でき、これらを組み合わせて使用するこ
ともできる。In the present invention, after the conventional fluff treatment, the tunnel wall surface is pressed by the reinforcing body to which the axial force is applied. That is, in hard rock tunnel construction, many floating stones fall after excavation of the tunnel, and the reinforcement of the axial force presses against the wall surface of the tunnel to prevent the pebbles from falling. Therefore, by the simple work of applying an axial force to the tunnel wall surface to attach the reinforcing body,
Alternatively, it becomes possible to omit the work procedure of 3 to 5,
You can accelerate the tunnel, shorten the work time, and reduce the cost. As the shape of the reinforcing body, a net-like shape, a rod-like shape, a plate-like shape or the like can be used, and it is also possible to use them in combination.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施例を図面に基
づき説明する。図１はトンネルの断面図を示す。２は硬
岩を発破や機械式掘削機により掘削したトンネル、４は
その壁面を示し、トンネル壁面４はピック等により浮石
の処理がなされている。６は網状補強体で、網状補強体
６は、例えば、幅が３００〜５００mmで、トンネル壁面
４の両側面４Ａ、４Ａ’の高さ方向中間部から上面４Ｂ
にわたって延在する長さを有し、現場において、ロール
状に巻かれたものから切断して使用してもよいし、予め
所定の長さに切断されたものをトンネル２内に搬入して
もよい。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional view of the tunnel. Reference numeral 2 denotes a tunnel in which hard rock has been blasted or excavated by a mechanical excavator, 4 denotes its wall surface, and the tunnel wall surface 4 has been treated for picking up floating stones by a pick or the like. 6 is a mesh reinforcement, and the mesh reinforcement 6 has, for example, a width of 300 to 500 mm, and extends from the middle portion in the height direction of both side surfaces 4A and 4A ′ of the tunnel wall surface 4 to the upper surface 4B.
It has a length that extends over the length, and may be used by cutting it from a roll wound on the spot, or carrying it into the tunnel 2 after cutting it into a predetermined length in advance. Good.
【０００９】網状補強体６は合成樹脂製で、可撓性を有
し、かつ、トンネル壁面４の両側面４Ａ、４Ａ’の高さ
方向中間部から上面４Ｂに沿って延在させた状態で小石
の落下を防止するに足る引張強度、剪断強度で形成され
ている。網状補強体６は、図２（Ａ）、（Ｂ）で示すよ
うに、格子状に配設されたフレーム部分６１０と、その
フレーム部分６１０の間に形成された矩形状の空間部６
１２とで構成され、空間部６１２の上下方向の寸法が例
えば２８mmで、左右方向の寸法が例えば４０mmあるいは
３３mmである。また、網状補強体６は、図２（Ｃ）で示
すように、フレーム部分６２０と、フレーム部分６２０
に形成された長孔状の空間部６２２とで構成され、空間
部６２２の上下方向の寸法が例えば２２mmで、左右方向
の寸法が例えば１６６mmである。このような網状補強体
６として、例えば、三井石化産資株式会社の商品名「テ
ンサー」や、前田工繊株式会社の商品名「アデム」など
を用いることができる。The net-like reinforcing member 6 is made of synthetic resin, has flexibility, and extends along the upper surface 4B from the height direction intermediate portions of both side surfaces 4A, 4A 'of the tunnel wall surface 4. It is formed with sufficient tensile strength and shear strength to prevent pebbles from falling. As shown in FIGS. 2 (A) and 2 (B), the net-like reinforcement body 6 includes frame portions 610 arranged in a grid pattern, and a rectangular space portion 6 formed between the frame portions 610.
The vertical dimension of the space portion 612 is, for example, 28 mm, and the horizontal dimension thereof is, for example, 40 mm or 33 mm. Further, as shown in FIG. 2C, the net-like reinforcing member 6 includes a frame portion 620 and a frame portion 620.
And a space 622 in the shape of a long hole formed in the space. The space 622 has a vertical dimension of, for example, 22 mm and a horizontal dimension of, for example, 166 mm. As such a net-like reinforcing member 6, for example, a product name “Tensor” manufactured by Mitsui Petrochemical Co., Ltd. or a product name “Adem” manufactured by Maeda Kosen Co., Ltd. can be used.
【００１０】網状補強体６をトンネル壁面４に取り付け
るには、トンネル壁面４の両側面４Ａ、４Ａ’のうちの
一方の側面４Ａの中間部において、図３（Ａ）、（Ｂ）
に示すように、埋込ボルト８、押え板１０、ナット１２
により網状補強体６の一端を固定する。次に、人力によ
り網状補強体６を一方の側面４Ａの上部、上面４Ｂ、他
方の側面４Ａ’に沿って延在させ、網状補強体６の他端
を他方の側面４Ａ’の中間部に位置させる。次に、他方
の側面４Ａ’の中間部において、図４に示すように、網
状補強体６の他端からトンネル壁面４に沿わせつつ一端
側に向けて軸力Ｆを与える。すなわち、他方の側面４
Ａ’の中間部において網状補強体６の他端を上方に送り
込む。To attach the net-like reinforcing member 6 to the tunnel wall surface 4, at the intermediate portion of one side surface 4A of both side surfaces 4A and 4A 'of the tunnel wall surface 4, as shown in FIGS.
As shown in, the embedded bolt 8, the presser plate 10, the nut 12
The one end of the mesh reinforcement 6 is fixed by. Next, the reticulated body 6 is manually extended along the upper part of the one side surface 4A, the upper surface 4B, and the other side surface 4A ', and the other end of the reticulated body 6 is positioned at the middle portion of the other side surface 4A'. Let Next, at the intermediate portion of the other side surface 4A ′, as shown in FIG. 4, an axial force F is applied from the other end of the mesh reinforcement 6 to the one end side along the tunnel wall surface 4. That is, the other side surface 4
The other end of the net-like reinforcing member 6 is fed upward at the intermediate portion of A '.
【００１１】これにより、網状補強体６は可撓性を有し
ていることから、図５、図６に想像線で示すように、網
状補強体６はトンネル壁面４の凹部４１０内に侵入し、
トンネル壁面４の凹凸に対応して変形し、これによりト
ンネル壁面４は網状補強体６により押え付けられる。そ
して、前記と同様に、他方の側面４Ａ’の中間部におい
て、埋込ボルト、押え板、ナットにより網状補強体６の
一端を固定する。あるいは、トンネル壁面４に打ち込ん
だ釘１４等に網状補強体６の一端の空間部６１２（６２
２）を掛止させて固定する。As a result, since the net-like reinforcing member 6 has flexibility, the net-like reinforcing member 6 penetrates into the recess 410 of the tunnel wall surface 4 as shown by the imaginary line in FIGS. ,
The tunnel wall surface 4 is deformed in accordance with the unevenness, so that the tunnel wall surface 4 is pressed by the mesh reinforcement 6. Then, similarly to the above, one end of the net-like reinforcing body 6 is fixed by an embedded bolt, a holding plate, and a nut in the middle portion of the other side surface 4A '. Alternatively, the space portion 612 (62) at one end of the net-like reinforcing member 6 is attached to the nail 14 etc. driven into the tunnel wall surface 4.
2) Hook and fix.
【００１２】尚、網状補強体６は、可撓性を有し、小石
の落下を防止するに足る引張強度、剪断強度で形成され
てことからある程度の剛性を有し、網状補強体６をトン
ネル壁面４に沿わせることで上方に凸の湾曲状になり、
上方に凸の湾曲状になるように付勢されるので、この状
態で網状補強体６に軸力Ｆを与えると、網状補強体６は
トンネル壁面４の凹凸に対応して変形し、トンネル壁面
４を押え付けることになる。また、他方の側面４Ａ’の
中間部において、網状補強体６に軸力Ｆを与える作業、
すなわち、網状補強体６の他端を上方に送り込む作業
は、例えば、図７に示すように、トンネル２の底面に設
置した基台２０に支持された送り込み装置２２により自
動的に送り込むようにしてもよい。この場合、送り込み
装置２２は、網状補強体６の空間部６１２（６２２）に
掛止可能な多数の突起を備えるローラ２４と、このロー
ラ２４を回転させる駆動手段等により構成することがで
きる。The net-like reinforcing member 6 is flexible and has a certain degree of rigidity because it is formed with a tensile strength and a shear strength sufficient to prevent falling of pebbles. By making it follow the wall surface 4, it becomes a convex curved shape,
Since it is urged to have an upwardly convex curved shape, when an axial force F is applied to the net-like reinforcing member 6 in this state, the net-like reinforcing member 6 is deformed corresponding to the unevenness of the tunnel wall surface 4, and the tunnel wall surface 4 is deformed. 4 will be pressed down. Further, in the middle portion of the other side surface 4A ′, a work of applying an axial force F to the net-like reinforcement body 6,
That is, for example, as shown in FIG. 7, the work of feeding the other end of the net-like reinforcing member 6 upward is performed automatically by the feeding device 22 supported by the base 20 installed on the bottom surface of the tunnel 2. Good. In this case, the feeding device 22 can be configured by a roller 24 having a large number of protrusions that can be hooked in the space portion 612 (622) of the net-like reinforcing body 6, a driving means for rotating the roller 24, and the like.
【００１３】そして、このような網状補強体６の取付け
作業を、トンネル２の長手方向に沿って複数回行う。こ
の場合、地山の性状に応じて、複数の網状補強体６を隙
間を開けることなくトンネル２の長手方向に並べてもよ
いし、あるいは、トンネル２の長手方向に間隔をおいて
取り付けるようにしてもよい。次に、トンネル壁面４が
網状補強体６により押え付けられ、１．５ｍ程度進行し
たならば、次ぎに、網状補強体６で押えつけられたトン
ネル壁面４の内側に、コンクリート型枠を組み込み、網
状補強体６とコンクリート型枠の間にコンクリートを打
設し、網状補強体６の上に覆工コンクリートを形成す
る。そして、このような作業を繰り返してトンネル２を
構築していく。Then, the work of attaching the net-like reinforcing member 6 is performed a plurality of times along the longitudinal direction of the tunnel 2. In this case, depending on the nature of the ground, a plurality of net-like reinforcements 6 may be arranged in the longitudinal direction of the tunnel 2 without opening a gap, or may be attached at intervals in the longitudinal direction of the tunnel 2. Good. Next, if the tunnel wall surface 4 is pressed down by the net-like reinforcing member 6 and progresses for about 1.5 m, next, a concrete formwork is installed inside the tunnel wall surface 4 pressed down by the net-like reinforcing member 6, Concrete is poured between the net-like reinforcing member 6 and the concrete form, and lining concrete is formed on the net-like reinforcing member 6. Then, such a work is repeated to build the tunnel 2.
【００１４】硬岩のトンネル工事では、トンネル掘削後
に落下する浮石は小さいものが多く、トンネル２の崩壊
は、これら小さな石の落下が契機となる。このような小
さな石の落下を防止する力は小さい力で足り、網状補強
体６による押え付けにより小石の落下が十分に防げる。
従って、本発明によれば、網状補強体６をトンネル壁面
４に取り付けるという簡単な作業により、従来の３〜
４、あるいは、３〜５の作業手順、すなわち、鋼製支保
工の建て込み作業や、コンクリートの吹き付け作業、ロ
ックボルトの打設作業を省き、トンネル工事の進行を早
め、また、作業時間の短縮化、コストダウンを図ること
が可能となり、特に、硬岩のトンネル工事に好適であ
る。In hard rock tunnel construction, many floating stones fall after tunnel excavation, and the collapse of the tunnel 2 is triggered by the fall of these small stones. A small force is sufficient to prevent the falling of such small stones, and the pressing of the net-like reinforcing member 6 can sufficiently prevent the falling of small stones.
Therefore, according to the present invention, by the simple operation of attaching the mesh reinforcement 6 to the tunnel wall surface 4,
4 or 3 to 5 work procedures, that is, the work of constructing steel supports, the work of spraying concrete, the work of placing lock bolts are omitted, the progress of tunnel construction is accelerated, and the work time is shortened. This makes it possible to reduce costs and reduce costs, and is particularly suitable for hard rock tunnel construction.
【００１５】尚、実施例では、網状補強体６の場合につ
いて説明した、網状補強体６と同じ材料から、図８
（Ａ）、（Ｂ）に示すように断面が円状や矩形状の棒状
を呈する補強体６Ａや、図８（Ｃ）に示すように断面が
板状の補強体６Ｂの場合も、地山の性状によっては使用
可能である。このような棒状補強体６Ａや板状補強体６
Ｂによっても、網状補強体６と同様に、軸力Ｆが与えら
れた補強体６Ａ、６Ｂによる押え付けにより小石の落下
が十分に防げ、補強体６Ａ、６Ｂをトンネル壁面４に取
り付けるという簡単な作業により、従来の３〜４、ある
いは、３〜５の作業手順、すなわち、鋼製支保工の建て
込み作業や、コンクリートの吹き付け作業、ロックボル
トの打設作業を省き、トンネル工事の進行を早め、ま
た、作業時間の短縮化、コストダウンを図ることが可能
となる。また、図９に示すように、網状補強体６、棒状
補強体６Ａ、板状補強体６Ｂを組み合わせて使用する等
任意である。In the embodiment, the case of the net-like reinforcing member 6 has been described.
8A and 8B, the reinforcing body 6A having a circular or rectangular rod shape in cross section or the reinforcing body 6B having a plate shape in cross section as shown in FIG. It can be used depending on the properties of. Such a rod-shaped reinforcing member 6A and a plate-shaped reinforcing member 6
Even with B, similarly to the net-like reinforcing member 6, the pressing of the reinforcing members 6A and 6B to which the axial force F is applied can sufficiently prevent the pebbles from falling, and the reinforcing members 6A and 6B can be easily attached to the tunnel wall surface 4. By the work, the conventional work procedure of 3-4 or 3-5, that is, the work of constructing steel supports, the work of spraying concrete, and the work of placing lock bolts are omitted, and the progress of tunnel construction is accelerated. Further, it becomes possible to shorten the working time and reduce the cost. Further, as shown in FIG. 9, it is optional to use the net-like reinforcement 6, the rod-like reinforcement 6A, and the plate-like reinforcement 6B in combination.
【００１６】[0016]
【発明の効果】以上の説明で明らかなように本発明は、
硬岩を発破あるいは機械式掘削機によりトンネル掘削
し、掘削され浮石が処理されたトンネル壁面に覆工コン
クリートを打設してトンネルを構築していくに際して、
可撓性を有し、かつ、トンネル壁面の両側面の高さ方向
中間部から上面に沿って延在させた状態で小石の落下を
防止するに足る引張強度、剪断強度を有する合成樹脂製
の網状、あるいは棒状、あるいは板状の補強体を用意
し、トンネル壁面の両側面の高さ方向中間部から上面に
わたり前記補強体を延在させ、かつ、補強体にトンネル
の壁面に沿った方向に軸力を与えてトンネル壁面を前記
補強体により押え付け、前記覆工コンクリートをこの網
状補強体の上から打設するようにした。そのため、硬岩
のトンネル工事において、トンネル壁面に、軸力を与え
て補強体を取り付けるという簡単な作業により、鋼製支
保工の建て込み作業や、コンクリートの吹き付け作業、
ロックボルトの打設作業を省き、トンネル工事の進行を
早め、また、作業時間を短縮し、コストダウンを図るこ
とが可能となる。As is apparent from the above description, the present invention is
When blasting hard rock or tunnel excavating with a mechanical excavator and placing lining concrete on the tunnel wall where the excavated fluff was processed,
Made of a synthetic resin that is flexible and has sufficient tensile strength and shear strength to prevent pebbles from falling while extending along the upper surface from the middle in the height direction on both sides of the tunnel wall surface. Prepare a mesh-shaped, rod-shaped, or plate-shaped reinforcing member, extend the reinforcing member from the middle part in the height direction of both sides of the tunnel wall surface to the upper surface, and extend the reinforcing member in the direction along the tunnel wall surface. Axial force was applied to press the wall surface of the tunnel with the reinforcing body, and the lining concrete was poured from above the mesh reinforcing body. Therefore, in the hard rock tunnel construction, by the simple work of applying an axial force to the tunnel wall surface to attach the reinforcement, the work of constructing steel supports and the work of spraying concrete,
It is possible to eliminate the work of placing the lock bolt, accelerate the progress of the tunnel construction, shorten the work time, and reduce the cost.
【図１】トンネルの断面図である。FIG. 1 is a sectional view of a tunnel.
【図２】（Ａ）、（Ｂ）、（Ｃ）は網状補強体の説明図
である。2 (A), (B), and (C) are explanatory views of a mesh reinforcement.
【図３】網状補強体の固定作業の説明図で、（Ａ）はト
ンネル壁面及び網状補強体をトンネル内側から見た図、
（Ｂ）は断面図である。FIG. 3 is an explanatory view of fixing work of the mesh reinforcement, (A) is a view of the tunnel wall surface and the mesh reinforcement seen from the inside of the tunnel,
(B) is a sectional view.
【図４】網状補強体を上方に送り込む作業の説明図であ
る。FIG. 4 is an explanatory diagram of an operation of feeding the net-like reinforcing member upward.
【図５】軸力が与えられた場合の網状補強体の変形の説
明図である。FIG. 5 is an explanatory diagram of deformation of the net-like reinforcing body when an axial force is applied.
【図６】図５の一部拡大図である。FIG. 6 is a partially enlarged view of FIG. 5;
【図７】網状補強体を上方に送り込む装置の説明図であ
る。FIG. 7 is an explanatory view of a device for feeding the net-like reinforcing member upward.
【図８】（Ａ）、（Ｂ）、（Ｃ）は補強体の他の形状の
説明図である。8A, 8B, and 8C are explanatory views of another shape of the reinforcing body.
【図９】各種の補強体を組み合わせて使用した説明図で
ある。FIG. 9 is an explanatory diagram in which various reinforcing bodies are used in combination.
４ トンネル壁面 ６ 網状補強体 ８ 埋込ボルト １０ 押さえ板 １２ ナット １４ 釘 ６Ａ、６Ｂ 補強体 4 Tunnel Wall Surface 6 Net Reinforcement 8 Embedded Bolt 10 Holding Plate 12 Nut 14 Nail 6A, 6B Reinforcement
Claims (4)
トンネル掘削し、 掘削され浮石が処理されたトンネル壁面に覆工コンクリ
ートを打設してトンネルを構築していくに際して、 可撓性を有し、かつ、トンネル壁面の両側面の高さ方向
中間部から上面に沿って延在させた状態で小石の落下を
防止するに足る引張強度、剪断強度を有する合成樹脂製
の網状の補強体を用意し、 トンネル壁面の両側面の高さ方向中間部から上面にわた
り前記補強体を延在させ、かつ、補強体にトンネルの壁
面に沿った方向に軸力を与えてトンネル壁面を前記補強
体により押え付け、 前記覆工コンクリートをこの網状補強体の上から打設す
るようにした、 ことを特徴とするトンネル構築方法。1. When blasting hard rock or excavating a tunnel with a mechanical excavator and placing a lining concrete on the tunnel wall where the excavated rock has been treated to build a tunnel, it has flexibility. In addition, a mesh reinforcement made of synthetic resin with tensile strength and shear strength sufficient to prevent falling of pebbles in a state where it extends along the upper surface from the middle part in the height direction on both sides of the tunnel wall surface. Prepare and extend the reinforcing body from the middle part in the height direction of both sides of the tunnel wall surface to the upper surface, and apply an axial force to the reinforcing body in the direction along the wall surface of the tunnel to form the tunnel wall surface by the reinforcing body. A method for constructing a tunnel, characterized in that the lining concrete is pressed and placed over the net-like reinforcement.
トンネル掘削し、 掘削され浮石が処理されたトンネル壁面に覆工コンクリ
ートを打設してトンネルを構築していくに際して、 可撓性を有し、かつ、トンネル壁面の両側面の高さ方向
中間部から上面に沿って延在させた状態で小石の落下を
防止するに足る引張強度、剪断強度を有する合成樹脂製
の棒状あるいは板状の補強体を用意し、 トンネル壁面の両側面の高さ方向中間部から上面にわた
り前記補強体を延在させかつ、補強体にトンネルの壁面
に沿った方向に軸力を与えてトンネル壁面を前記補強体
により押え付け、 前記覆工コンクリートをこの補強体の上から打設するよ
うにした、 ことを特徴とするトンネル構築方法。2. When the hard rock is blasted or a tunnel is excavated by a mechanical excavator, and a lining concrete is placed on the wall surface of the excavated and treated fluff to construct a tunnel, it has flexibility. In addition, the rod-shaped or plate-shaped synthetic resin that has sufficient tensile strength and shear strength to prevent falling of pebbles while extending along the upper surface from the middle part in the height direction on both sides of the tunnel wall surface. Prepare a reinforcing body, extend the reinforcing body from the middle part in the height direction of both sides of the tunnel wall surface to the upper surface, and apply an axial force to the reinforcing body in the direction along the wall surface of the tunnel to reinforce the tunnel wall surface. A method for constructing a tunnel, characterized in that the lining concrete is pressed by a body, and the lining concrete is placed from above the reinforcing body.
さ方向中間部においてトンネル壁面に固定されている請
求項１または２記載のトンネル構築方法。3. The tunnel construction method according to claim 1, wherein the reinforcing body is fixed to the tunnel wall surface at an intermediate portion in the height direction of both side surfaces of the tunnel wall surface.
隔をおいてトンネル壁面に取り付けられる請求項１また
は２記載のトンネル構築方法。4. The method for constructing a tunnel according to claim 1, wherein the reinforcing body is attached to a wall surface of the tunnel at intervals in a longitudinal direction of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24874495A JP3635419B2 (en) | 1995-09-01 | 1995-09-01 | Tunnel construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24874495A JP3635419B2 (en) | 1995-09-01 | 1995-09-01 | Tunnel construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0972185A true JPH0972185A (en) | 1997-03-18 |
| JP3635419B2 JP3635419B2 (en) | 2005-04-06 |
Family
ID=17182726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24874495A Expired - Fee Related JP3635419B2 (en) | 1995-09-01 | 1995-09-01 | Tunnel construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3635419B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967977A (en) * | 2010-08-31 | 2011-02-09 | 中国水电顾问集团华东勘测设计研究院 | Construction method for controlling rock pillar type rock burst in process of double-head tunneling deep-buried tunnel transfixion |
| CN103089272A (en) * | 2013-02-07 | 2013-05-08 | 上海市政工程设计研究总院（集团）有限公司 | Method for constructing tunnel located at mountain slope toe |
| CN107747496A (en) * | 2017-12-03 | 2018-03-02 | 刘辉 | Tunnel intelligent construction trolley and the method using chassis laying non-woven geotextile |
-
1995
- 1995-09-01 JP JP24874495A patent/JP3635419B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967977A (en) * | 2010-08-31 | 2011-02-09 | 中国水电顾问集团华东勘测设计研究院 | Construction method for controlling rock pillar type rock burst in process of double-head tunneling deep-buried tunnel transfixion |
| CN103089272A (en) * | 2013-02-07 | 2013-05-08 | 上海市政工程设计研究总院（集团）有限公司 | Method for constructing tunnel located at mountain slope toe |
| CN103089272B (en) * | 2013-02-07 | 2016-04-27 | 上海市政工程设计研究总院（集团）有限公司 | A kind of construction method being positioned at mountain slope toe tunnel |
| CN107747496A (en) * | 2017-12-03 | 2018-03-02 | 刘辉 | Tunnel intelligent construction trolley and the method using chassis laying non-woven geotextile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3635419B2 (en) | 2005-04-06 |
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