JPH02183090A - Cutter shield excavator - Google Patents

Cutter shield excavator

Info

Publication number
JPH02183090A
JPH02183090A JP94989A JP94989A JPH02183090A JP H02183090 A JPH02183090 A JP H02183090A JP 94989 A JP94989 A JP 94989A JP 94989 A JP94989 A JP 94989A JP H02183090 A JPH02183090 A JP H02183090A
Authority
JP
Japan
Prior art keywords
concrete
frame
tail
jacks
jack
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.)
Pending
Application number
JP94989A
Other languages
Japanese (ja)
Inventor
Kaiji Yanagihara
柳原 海二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Koki Co Ltd
Original Assignee
Nippon Koki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Koki Co Ltd filed Critical Nippon Koki Co Ltd
Priority to JP94989A priority Critical patent/JPH02183090A/en
Publication of JPH02183090A publication Critical patent/JPH02183090A/en
Pending legal-status Critical Current

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  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

PURPOSE:To fill a tail void with concrete, and to construct a excellent lining fast stuck to a bedrock by filling a section between the tail section of a frame and inner forms with concrete and pressing concrete to the rear by an end forms support jack. CONSTITUTION:A cylindrical tail section 4 approximating to a tunnel section is formed at the rear end of a frame 1, and inner forms 8 are assembled on the inside of the tail section 4. Cutter-jacks 3, 3 are driven separately cutters 2, 2 are penetrated successively to a facing, a landslide protection wall is constructed, and the cutter-jacks 3, 3 are driven simultaneously in the opposite direction and the frame 1 is propelled forward. Concrete 14 is placed between the tail section 4 and the inner forms 8, and pressed and supported to the rear by end forms support jacks 5, 5 when the frame 1 is moved forward, and a tail void is filled. The inner forms 8 are supported to concrete pressure by inner forms support jacks 6, 6 at that time.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、トンネルの掘進とライニングコンクリートの
打設とを平行して行うシールド掘進機に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a shield excavator that excavates a tunnel and places lining concrete in parallel.

(従来の技術) トンネルへのライニングの構築方法として、例えば第8
図に示すようにシールド掘進fi30の後方でセグメン
ト31を組み立て、セグメント31に形成した注入孔3
2から豆砂利とモルタルからなる裏込め材33を地山と
セグメント31の間に注入する工法が知られている。
(Prior art) As a method of constructing a lining for a tunnel, for example,
As shown in the figure, the segment 31 is assembled behind the shield excavation fi 30, and the injection hole 3 formed in the segment 31 is
A construction method is known in which a backfilling material 33 made of pea gravel and mortar is injected between the ground mass and the segment 31 from 2.

また、第9図に示すように木製のくさび34を介してI
]型鋼による支保工35で掘削面を支持し、掘削面の内
側に金網36を張り渡した上で、吹き付はコンクリート
37によりライニングを構築する工法も知られている。
In addition, as shown in FIG.
] There is also known a construction method in which the excavated surface is supported by shoring 35 made of shaped steel, a wire mesh 36 is stretched inside the excavated surface, and then a lining is constructed with sprayed concrete 37.

(発明のaffl) ところで、曲線部の掘進や、直線掘進時の上下左右の偏
心の修正には、シールドfi30が進行方向を変えやす
いよう、切羽をシールド1f130の外形より広く掘削
する、いわゆる余掘りが行われるが、その結果、セグメ
ント31と地山との隙間(テールボイド)が大きくなる
ため、テールボイドヘの十分な裏込め材の充填により地
山の変形を防止することが肝要である。しかしながら、
注入された裏込め材は目に見えないため、施工品質の管
理は容易でなく、これがセグメント工法の難点となって
いた。
(Affl of the invention) By the way, in order to correct vertical and horizontal eccentricity during excavation of curved sections or straight excavation, so-called over-excavation, in which the face is excavated wider than the outer diameter of the shield 1f130, is used to make it easier for the shield fi30 to change the direction of travel. However, as a result, the gap (tail void) between the segment 31 and the ground becomes larger, so it is important to prevent the ground from deforming by filling the tail void with sufficient backfilling material. however,
Because the injected backfill material is invisible, it is difficult to control construction quality, which is a drawback of the segment construction method.

一方、コンクリート吹き付けによれば、コンクリートが
直接地山に密着するので地山は十分に保護され、このよ
うな問題は生じないが、施工が面倒であり、また構築さ
れるライニングの品質的な安定を確保するのが難しいと
いう問題があった。
On the other hand, with concrete spraying, the concrete adheres directly to the ground, so the ground is sufficiently protected and this problem does not occur, but the construction is troublesome and the quality of the constructed lining is not stable. The problem was that it was difficult to secure.

本発明は、以上の問題、αに鑑みて、地山に密着した良
質のライニングを構築できるコンクリート打設装置を備
えたシールド掘進機を提供することを目的とする。
In view of the above problem α, an object of the present invention is to provide a shield excavator equipped with a concrete placing device capable of constructing a high-quality lining that is in close contact with the ground.

(課題を達成するための手段) 本発明は、シールドフレームの外周に直後方向に変位す
る複数のメツセルを並列に配設し、このメツセルを前後
に駆動するメツセルジヤツキをシールドフレームと各メ
ツセルとの間に介装したメツセルシールド掘進機におい
て、シールドフレームの後部にトンネル断面に近似した
筒形のテール部を形成し、このテール部内側に組み立て
られる内型枠を支持する内型枠支持ジヤツキと、内型枠
とテール部との間に打設されるライニングコンクリート
を後方に向けて支持する妻型枠支持ジヤツキとをシール
ドフレームに備えている。
(Means for Achieving the Object) The present invention has a plurality of Metsu cells disposed in parallel on the outer periphery of a shield frame that are displaced in the immediate direction, and a Metsu cell jack for driving the Metsu cells back and forth between the shield frame and each Metsu cell. In the Metsu cell shield excavator installed in the shield frame, a cylindrical tail portion approximating a tunnel cross section is formed at the rear of the shield frame, and an inner formwork support jack that supports the inner formwork assembled inside the tail portion; The shield frame is equipped with a end formwork support jack that supports the lining concrete placed between the inner formwork and the tail part toward the rear.

(作用) メツセルジヤツキを個々に駆動してメツセルを順次切羽
に貫入することにより、切羽掘削面の山留が行われ、こ
れらのメツセルジヤツキを一斉に逆方向へ駆動すること
でシールドフレームが前方へ推進される。また、シール
ドフレームのテール部と組み立てられた内型枠との間に
コンクリートを打設し、このコンクリートをシールドフ
レームの前進時に妻型枠支持ジャッキが後方へ加圧支持
することにより、テール部後方のテールボイドがコンク
リートに充填される。また、内型枠支持ジャッキはこの
コンクリートの圧力に対して内型枠を支持する。
(Function) By driving the metsel jacks individually and penetrating the metsels into the face one after another, the excavated surface of the face is piled up, and by driving these metsel jacks in the opposite direction all at once, the shield frame is propelled forward. Ru. In addition, by pouring concrete between the tail part of the shield frame and the assembled inner formwork, and supporting this concrete with pressure backwards by the gable formwork support jack when the shield frame moves forward, the tail part The tail voids are filled with concrete. In addition, the inner formwork support jack supports the inner formwork against the pressure of this concrete.

(実施例) 第1図〜第7図に本発明の実施例を示す。(Example) Embodiments of the present invention are shown in FIGS. 1 to 7.

第1図において、1はトンネルの掘削断面に近似した外
形に組み立てられたシールド掘進機のフレームであり、
先端には切羽を掘削するカッター20が前後方向に伸縮
するカッタースライドジヤツキ21を介して支持される
。7レーム1の中心部には掘削したすりを後送するため
のスクリューコンベア22が設(すられ、スクリューコ
ンベア22の後方には通常タイプのコンベア23が11
 方(n 坑口に向けて配設される。
In FIG. 1, 1 is a frame of a shield excavator assembled in an external shape that approximates the cross section of a tunnel excavated;
A cutter 20 for excavating a face is supported at the tip via a cutter slide jack 21 that extends and contracts in the front-back direction. 7 A screw conveyor 22 is installed in the center of the frame 1 to transport the excavated pickpockets, and a normal type conveyor 23 is installed behind the screw conveyor 22.
Direction (n) Arranged towards the mine entrance.

フレーム1の外周には前後方向にスライドする数多くの
メツセル2が並列に装着され、各メツセル2と内側の7
レーム1との間に7ツセルジヤツキ3が介装される。
On the outer periphery of the frame 1, a large number of Metsu cells 2 that slide in the front and back direction are installed in parallel, and each Metsu cell 2 and the inner 7
A seven cell jack 3 is interposed between the frame 1 and the frame 1.

7レーム1の後端にはトンネルの形状にほぼ等しい筒状
のテール部4が形成される。そして、このテール部4の
内側に複数の妻型枠支持ジヤツキ5が周方向に適当な間
隔をおいて配設される。また、これらの妻型枠支持ジヤ
ツキ5の内側に複数の内型枠支持ジヤツキ6がやはり周
方向に適当な間隔で配設される。妻型枠支持ジヤツキ5
と内型枠支持ジャッキ6はそれぞれフレーム1に支持さ
れたシリングチューブからピストンロッドを後ろ向きに
突出する。妻型枠支持ジヤツキ5のピストンロッドの先
端にはリング状の妻型枠7が固着する。また、内型枠支
持ジヤツキ6のピストンロッドの先端にはテール部4の
内側で組み立てられるセグメント状の内型枠8を支持す
る支持リング9が固着する。
A cylindrical tail portion 4 having approximately the same shape as a tunnel is formed at the rear end of the seven-frame 1. A plurality of end formwork support jacks 5 are arranged inside the tail portion 4 at appropriate intervals in the circumferential direction. Furthermore, inside these end formwork support jacks 5, a plurality of inner formwork support jacks 6 are also arranged at appropriate intervals in the circumferential direction. Wife formwork support jack 5
and the inner formwork support jack 6 each project a piston rod backward from a shilling tube supported by the frame 1. A ring-shaped end form 7 is fixed to the tip of the piston rod of the end form supporting jack 5. Further, a support ring 9 for supporting a segment-shaped inner form 8 assembled inside the tail portion 4 is fixed to the tip of the piston rod of the inner form supporting jack 6 .

妻型枠7の内外周にはそれぞれ内型枠8とテール部4に
圧着するゴムチューブによるパツキン10が装着され、
テール部4と内型枠8の間にコンクリート14を打設す
るための図示されない打設口が妻型枠7に形成される。
Gaskets 10 made of rubber tubes are attached to the inner and outer peripheries of the end formwork 7, respectively, and are crimped onto the inner formwork 8 and the tail portion 4.
A pouring opening (not shown) for pouring concrete 14 between the tail portion 4 and the inner formwork 8 is formed in the end formwork 7.

また、テール部4の後縁にはテール部4に連続して後方
へ延びる弾性材によるテールパツキン11が取り付けら
れる。
Further, a tail packing 11 made of an elastic material is attached to the rear edge of the tail portion 4 and extends rearward continuously from the tail portion 4.

なお、12は脱型した後方の内型枠8をテール部4に運
搬するトラベラ−エレクタ−であり、7レーム1に牽引
された二トルビーム13に沿って前後方向に移動する。
In addition, 12 is a traveler erector which conveys the demolded rear inner formwork 8 to the tail part 4, and moves in the front-back direction along the nittle beam 13 pulled by the 7-frame 1.

次に作用を説明する。Next, the effect will be explained.

第2図はテール部4の内側において内型枠8が組み立て
られた状態を示す。なお、鉄筋コンクリートによるライ
ニングの場合にはこれに先立ち、テール部4の内側で図
示されない鉄筋の組み立てが行われる。
FIG. 2 shows a state in which the inner formwork 8 is assembled inside the tail portion 4. As shown in FIG. In the case of lining with reinforced concrete, prior to this, reinforcing bars (not shown) are assembled inside the tail portion 4.

この状態で、シールド掘進機は第3図に示すように、回
転駆動されたカッター20を推進ジヤツキ21の収縮駆
動により前進させて切羽を掘削するとともに、メツセル
ジヤツキ3の伸張によりメツセル2を個々に前進させて
掘削面の山留を行う。
In this state, as shown in FIG. 3, the shield excavator advances the rotationally driven cutter 20 by the contraction drive of the propulsion jack 21 to excavate the face, and advances the metsu cells 2 individually by extending the metsu cell jack 3. Then, the excavation surface is piled up.

次に、第4図に示すように妻型枠7のコンクリート打設
口にパルプを備えたコンクリート打設管15を接続し、
テール部4と内型枠8の間に生コンクリートを投入打設
する。この時、内型枠支持ジヤツキ6が支持リング9を
介して内型枠8を、妻型枠支持ジヤツキ5が妻型枠7を
、それぞれ打設圧力に抗して支持する。
Next, as shown in FIG. 4, a concrete casting pipe 15 equipped with pulp is connected to the concrete casting opening of the gable formwork 7,
Fresh concrete is placed between the tail portion 4 and the inner formwork 8. At this time, the inner formwork support jack 6 supports the inner formwork 8 via the support ring 9, and the end formwork support jack 5 supports the end formwork 7, respectively, against the casting pressure.

生フンクリートの投入の後、伸張状態のメツセルジャッ
キ3を一斉に収縮させる。この結果、メツセル2と地山
との摩擦力により7ンーム1が前方へと引き寄せられる
。これに同調して内型枠支持ジヤツキ6が伸張し、内型
枠8を引き続いて支持する。また、妻型枠支持ジヤツキ
5も同様に伸張し、妻型枠7を所定の圧力のもとに加圧
支持する67レーム1の前進に伴い、未硬化コンクリー
ト14はこの妻型枠7によりテール部4の後方へと押し
出され、第5図に示すようにテールボイドに充填される
。この時、必要に応じて生コンクリートの追加投入が行
われる。なお、妻型枠7の内外周に装着したパツキン1
0がテール部4と内型枠8とに密着しているので、妻型
枠支持ジヤツキ5の加圧支持によりコンクリ−)ミルク
がテール部4の内側に漏れ出す恐れはない。
After the raw funcrete is put in, the Metsu cell jacks 3 in the extended state are all contracted all at once. As a result, the seven arms 1 are drawn forward due to the frictional force between the metsu cell 2 and the ground. In synchronization with this, the inner formwork support jack 6 extends and continues to support the inner formwork 8. In addition, the end formwork supporting jacks 5 are similarly extended, and as the 67 frame 1 that supports the end formwork 7 under a predetermined pressure moves forward, the uncured concrete 14 is tailed by the end formwork 7. It is pushed out to the rear of section 4 and fills the tail void as shown in FIG. At this time, additional fresh concrete is added as necessary. In addition, the packing 1 attached to the inner and outer peripheries of the gable formwork 7
0 is in close contact with the tail part 4 and the inner formwork 8, there is no fear that concrete milk will leak inside the tail part 4 due to the pressurized support of the end formwork support jack 5.

第5図の状態でコンク17− ) 14が所定の強度に
達したら、第6図に示すように妻型枠支持ジャッキ5を
収縮させ、さらに第7図のように内型枠支持ツヤγキロ
を収縮させた後、トラベラ−エレクタ−12により後方
の脱型した内型枠8を運搬し、テール部4の内側で組み
立て、再び第2図から始まる次の工程に入る。
When the concrete 17-) 14 reaches a predetermined strength in the state shown in FIG. After contracting, the inner formwork 8 which has been demolded at the rear is transported by the traveler-erector 12 and assembled inside the tail part 4, and the next process starts again from FIG. 2.

以上の繰り返しにより他山にしっかりと密着した良質な
シングルシェルライニングが構築される。
By repeating the above steps, a high-quality single shell lining that tightly adheres to other linings is constructed.

なお、打ち継目は通常の上水板により止水することがで
きる。また、曲線部の施工や進路の修正を行う場合は内
型枠8に異形型枠を使用することでシールド機の方向を
変換する。
Note that the seam can be watertight with a regular water supply plate. Furthermore, when constructing a curved section or correcting the course, the direction of the shielding machine is changed by using a deformed formwork as the inner formwork 8.

(発明の効果) 以上のように、本発明はシールドフレームのテール部内
側に組み立てられた内型枠を支持する内型枠支持ジヤツ
キと、打設されるコンクリートを後方に向けて支持する
妻型枠支持ジヤツキとを備えたため、シールドフレーム
の前進に伴い、未硬化のコンクリートが内型枠に支持さ
れたまま、妻型枠支持ジヤツキによりテール部から後方
へと押し出され、テール部後方のテールボイドに充填さ
れる。このため、地山に密着した良質のライニングを掘
進作業と平行して能率よく構築することができる。
(Effects of the Invention) As described above, the present invention provides an inner formwork support jack that supports the inner formwork assembled inside the tail portion of a shield frame, and a gable mold that supports the concrete to be poured rearward. As the shield frame moves forward, the uncured concrete is pushed backward from the tail part by the end formwork support jacks while being supported by the inner formwork, and is pushed into the tail void behind the tail part. Filled. Therefore, a high-quality lining that adheres to the ground can be efficiently constructed in parallel with the excavation work.

第1図は本発明の実施例を示すメツセルシールド掘進機
の縦断面図、第2図〜第7図は同掘進機によるトンネル
の施工状況を順を追って説明するトンネル要部の縦断面
図である。
Fig. 1 is a longitudinal cross-sectional view of a Metsu cell shield excavating machine showing an embodiment of the present invention, and Figs. 2 to 7 are longitudinal cross-sectional views of main parts of a tunnel explaining step-by-step the construction status of a tunnel by the same excavating machine. It is.

また、fItJ8図は従来例を示すトンネル要部の縦断
面図、第9図は別の従来例を示すシールド掘進機後方の
トンネル要部の縦断面図である。
Fig. fItJ8 is a vertical sectional view of a main part of a tunnel showing a conventional example, and Fig. 9 is a vertical sectional view of a main part of a tunnel behind a shield tunneling machine, showing another conventional example.

1・・・フレーム、2・・・メツセル、3・・・メツセ
ルジヤツキ、4・・・テール部、5・・・妻型枠支持ジ
ヤツキ、6・・・内型枠支持ジヤツキ、7・・・妻型枠
、8・・・内型枠、14・・・コンクリート。
DESCRIPTION OF SYMBOLS 1...Frame, 2...Metsu cell, 3...Metsu cell jack, 4...Tail part, 5...Gate formwork support jack, 6...Inner formwork support jack, 7...Given Formwork, 8... Inner formwork, 14... Concrete.

特許出願人      日本鉱機株式会社Patent applicant: Nippon Koki Co., Ltd.

【図面の簡単な説明】[Brief explanation of the drawing]

Claims (1)

【特許請求の範囲】[Claims] シールドフレームの外周に前後方向に変位する複数のメ
ッセルを並列に配設し、このメッセルを前後に駆動する
メッセルジャッキをシールドフレームと各メッセルとの
間に介装したメッセルシールド掘進機において、シール
ドフレームの後部にトンネル断面に近似した筒形のテー
ル部を形成し、このテール部内側に組み立てられる内型
枠を支持する内型枠支持ジャッキと、内型枠とテール部
との間に打設されるライニングコンクリートを後方に向
けて支持する妻型枠支持ジャッキとをシールドフレーム
に備えたことを特徴とするメッセルシールド掘進機。
In a Messel shield excavation machine, a plurality of Messels displacing in the front-rear direction are arranged in parallel on the outer periphery of the shield frame, and a Messel jack for driving the Messels back and forth is interposed between the shield frame and each Messel. A cylindrical tail portion approximating the tunnel cross section is formed at the rear of the tunnel, and an inner form support jack is installed between the inner form and the tail portion to support the inner form assembled inside this tail portion. A Messel shield excavator characterized in that the shield frame is equipped with a gable formwork support jack that supports the lining concrete facing backward.
JP94989A 1989-01-06 1989-01-06 Cutter shield excavator Pending JPH02183090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP94989A JPH02183090A (en) 1989-01-06 1989-01-06 Cutter shield excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP94989A JPH02183090A (en) 1989-01-06 1989-01-06 Cutter shield excavator

Publications (1)

Publication Number Publication Date
JPH02183090A true JPH02183090A (en) 1990-07-17

Family

ID=11487926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP94989A Pending JPH02183090A (en) 1989-01-06 1989-01-06 Cutter shield excavator

Country Status (1)

Country Link
JP (1) JPH02183090A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51140334A (en) * 1975-05-17 1976-12-03 Gewerk Eisenhuette Westfalia Method of performing excavation and lining of tunnel simultaneously and continuously and excavating shield for carrying out this method
JPS53100633A (en) * 1977-02-15 1978-09-02 Gewerk Eisenhuette Westfalia Method of and device for laterally excavating tunnel while simultaneously placing concrete

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51140334A (en) * 1975-05-17 1976-12-03 Gewerk Eisenhuette Westfalia Method of performing excavation and lining of tunnel simultaneously and continuously and excavating shield for carrying out this method
JPS53100633A (en) * 1977-02-15 1978-09-02 Gewerk Eisenhuette Westfalia Method of and device for laterally excavating tunnel while simultaneously placing concrete

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