JP2007262748A - Construction equipment for pipe roof - Google Patents

Construction equipment for pipe roof Download PDF

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JP2007262748A
JP2007262748A JP2006088877A JP2006088877A JP2007262748A JP 2007262748 A JP2007262748 A JP 2007262748A JP 2006088877 A JP2006088877 A JP 2006088877A JP 2006088877 A JP2006088877 A JP 2006088877A JP 2007262748 A JP2007262748 A JP 2007262748A
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pipe
underground
pipe roof
floor
horizontal fixing
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JP4557918B2 (en
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Yoji Kawai
洋二 川合
Akira Ishikawa
明 石川
Takashi Misawa
孝史 三澤
Yasuhiro Adachi
康宏 足立
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Okumura Corp
株式会社奥村組
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent a friction-cut plate, covering a section above a working space section between a pipe roof and an upper floor section of an underground structure, from being deflected downward by the load of ground, in the case of the underground propelling of the pipe roof composed of a pipe row where the friction-cut plate is placed propellably at one on its top surface, in advance of the propelling of the underground structure. <P>SOLUTION: A plurality of first supporting rods 7 are protrusively provided like the teeth of a comb in a backward direction at the upper end of the back end surface of each pipe 2a, constituting the pipe roof 2. A plurality of second supporting rods 8, which are meshed with the first supporting rods 7 in a longitudinally slidable manner, are protrusively provided like the teeth of the comb on the side of the front end surface of the upper floor section 1a of the underground structure 1. Thus, the friction-cut plate 5, which covers the working space section between the pipe roof 2 and the upper floor section 1a of the underground structure 1, is supported by the first and second supporting rods 7 and 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、軌道下や道路下を横断してこれらの軌道や道路直下の地盤中に地下通路となる地下構造物を埋設、施工する際に、この地下構造物に先行して地下構造物の推進時のガイドとなるパイプルーフの施工装置に関するものである。   In the present invention, when an underground structure serving as an underground passage is buried and constructed in the ground directly below the track or road across the track or road, the underground structure is preceded by the underground structure. The present invention relates to a pipe roof construction device that serves as a guide during propulsion.
従来から、軌道下や道路下の地盤中に既成の地下構造物を埋設することにより地下道を築造する方法としては、特許文献1に記載したように、地中に埋設すべき地下構造物における少なくとも上床部の前端面から前方に向かって保持枠を一体に突設し、この保持枠に複数本の小筒体刃口を前後摺動自在に挿嵌させると共に該小筒体刃口の後端面と地下構造物の上床部前端面間に推進ジャッキを介在させ、さらに、地下構造物の上面に配設した細長いフリクションカット板の先端を各々の小筒体刃口の前端部上面に固着し、上記軌道又は道路を挟んだ一側方を発進立坑側、他側方を到達立坑側として上記地下構造物を発進立坑側に設置して推進ジャッキを伸長させることにより小筒体刃口を順次所定長さ地中に推進させ、この小筒体刃口の推進後、該小筒体刃口群に後続して地下構造物を同じ長さだけフリクションカット板の下面に沿って推進させ、これを繰り返し行うことによって地下構造物を発進立坑と到達立坑間に埋設、施工することが行われている。   Conventionally, as described in Patent Document 1, as a method for constructing an underground passage by burying an existing underground structure in a ground under a track or a road, at least in an underground structure to be embedded in the ground A holding frame is projected integrally from the front end surface of the upper floor portion, and a plurality of small cylindrical blade edges are slidably fitted back and forth in the holding frame, and the rear end face of the small cylindrical blade edge A propulsion jack is interposed between the front end surface of the upper floor portion of the underground structure, and the tip of the elongated friction cut plate disposed on the upper surface of the underground structure is fixed to the upper surface of the front end portion of each small cylindrical blade edge, By setting the underground structure on the start shaft side with one side across the track or road as the start shaft side and the other side as the reach shaft side, the propulsion jack is extended to sequentially specify the small cylindrical blade edges. Propelled into the ground for a long time, propulsion of this small cylindrical blade Then, following the small cylindrical blade group, the underground structure is propelled along the lower surface of the friction cut plate by the same length, and by repeating this, the underground structure is buried between the starting shaft and the reaching shaft, Construction is being done.
また、上記保持枠に代えて小筒体刃口を前後摺動自在に挿嵌している保持筒を使用し、この小筒体刃口を備えた保持筒を地下構造物の上床部の前方側に並設してパイプルーフを形成し、このパイプルーフを一定長、推進させる作業工程と、これに後続して地下構造物を一定長、推進させる作業工程とを繰り返し行うことによって地下構造物を推進、埋設することも記載されている。
特公昭59−27833号公報
Further, instead of the holding frame, a holding cylinder in which a small cylinder blade edge is slidably inserted back and forth is used, and the holding cylinder provided with the small cylinder blade edge is positioned in front of the upper floor portion of the underground structure. An underground structure is formed by repeatedly performing a work process for propelling the pipe roof for a certain length and a work process for propelling the underground structure for a certain length following the pipe roof. It is also described to promote and embed
Japanese Patent Publication No.59-27833
しかしながら、小筒体刃口の後部を保持枠や保持筒内に前後摺動自在に内装して前部をこれらの保持枠や保持筒から前方に突出させていると共にこの突出した該小筒体刃口の前端上面に、上記地下構造物の上面に配設した細長いフリクションカット板の先端を固着しているので、フリクションカット板の下面と小筒体刃口の先端上面との間に保持枠や保持筒の厚みに相当する隙間が生じることになり、この隙間をフリクションカット板と小筒体刃口との先端部間を結合した部材によって一体に連結しているため、この結合部材によって小筒体刃口の推進抵抗が増大して推進作業が困難となる事態が発生する虞れがあった。   However, the rear part of the small cylinder blade mouth is slidably mounted in the holding frame or holding cylinder so that the front part protrudes forward from the holding frame or holding cylinder, and the protruding small cylinder body Since the tip of the elongated friction cut plate disposed on the upper surface of the underground structure is fixed to the upper surface of the front end of the blade edge, a holding frame is provided between the lower surface of the friction cut plate and the upper surface of the tip of the small cylindrical blade edge. And a gap corresponding to the thickness of the holding cylinder is generated, and this gap is integrally connected by a member that joins the tip portions of the friction cut plate and the small cylindrical blade edge. There is a possibility that a situation in which the propulsion work becomes difficult due to an increase in the propulsion resistance of the cylindrical blade edge.
このような問題点は、地下構造物の上床部の前端面に保持枠や保持筒を突設することなく、該上床部の前端面下端部に前方に向かって水平支持台を突設し、この水平支持台上に上面が地下構造物の上床部の上面と同一高さとなるように形成された小筒体刃口の小筒体刃口後部下面を前後摺動自在に並設すれば、フリクションカット板の下面を小筒体刃口の上面から地下構造物の上床部の上面に亘って隙間なく載置させることができるので解消することができるが、このように構成すると、地下構造物の上床部の前端面と小筒体刃口の後端面との間にはフリクションカット板が支持されていない空間部が発生するので、フリクションカット板が上方の地盤の荷重によって下方に撓んで、地下構造物を該フリクションカット板の下面に沿って推進させることができなくなる虞れが生じるといった問題点がある。   Such a problem, without projecting a holding frame or holding cylinder projecting to the front end surface of the upper floor portion of the underground structure, projecting a horizontal support base toward the front end lower end portion of the upper floor portion, If the bottom surface of the small cylinder blade edge formed so that the upper surface is the same height as the upper surface of the upper floor portion of the underground structure on this horizontal support base, the rear surface of the rear portion of the small cylinder blade edge is slidable side by side, This can be eliminated because the lower surface of the friction cut plate can be placed without gaps from the upper surface of the small cylindrical blade edge to the upper surface of the upper floor portion of the underground structure. Since a space portion where the friction cut plate is not supported is generated between the front end surface of the upper floor portion and the rear end surface of the small cylindrical blade edge, the friction cut plate is bent downward by the load of the upper ground, Propulsion of underground structures along the bottom surface of the friction cut plate To that fear there is a problem that occurs that can not be.
また、パイプルーフを形成している上記小筒体刃口を推進させる手段として、各小筒体刃口の後方にそれぞれ推進ジャッキを設置し、この推進ジャッキを順次、伸長させることによって小筒体刃口を推進させるように構成した場合、多数本の推進ジャッキを必要として装置全体が大規模となり、工費が高くつくといった問題点があった。   Further, as a means for propelling the small cylinder blade edge forming the pipe roof, a small jack body is provided by installing a propulsion jack at the rear of each small cylinder blade edge and sequentially extending the propulsion jack. When the blade is configured to be propelled, there are problems that a large number of propulsion jacks are required, the entire apparatus becomes large, and the construction cost is high.
本発明はこのような問題点に鑑みてなされたもので、その目的とするところは、フリクションカット板の撓みを防止して地下構造物の埋設施工が能率よく行えるようにしたパイプルーフの施工装置を提供するにある。   The present invention has been made in view of such problems, and the object of the present invention is to provide a pipe roof construction apparatus capable of efficiently embedding underground structures by preventing the bending of the friction cut plate. To provide.
上記目的を達成するために本発明のパイプルーフの施工装置は、請求項1に記載したように、上面にフリクションカット板を一体的に載置してなる複数本のパイプを地下構造物の上床部の前方側に並設することによりパイプルーフを形成し、このパイプルーフの後部を地下構造物の前端開口部に装着している刃口の上面に前方に向かって摺動可能に支持させて、全てのパイプを順次、地中に一定長、推進させる工程と、この工程に後続して上記地下構造物を地中に一定長、推進させる工程とを繰り返し行うことにより地下構造物を地中に埋設施工する際の上記パイプルーフの施工装置であって、パイプルーフの後端と地下構造物の上床部の前面との間における上記刃口の上方空間部を作業空間部に形成すると共に、上記各パイプ上のフリクションカット板を後方に延長させて上記地下構造物の上床部上面に前後摺動自在に載置させることによりこれらのフリクションカット板で上記作業空間部を被覆してあり、さらに、各パイプの後端面上端部に、櫛歯状に配列している複数本の第一支持棒を後方に向かって突設している一方、上記地下構造物の上床部の前端面側にこれらの櫛歯状に配列した第一支持棒に前後方向に摺動自在に噛合した櫛歯状に配列している複数本の第二支持棒を前方に向かって突設してこれらの第一、第二支持棒により上記作業空間部を被覆しているフリクションカット板の下面を支持させた構造としている。   In order to achieve the above object, a pipe roof construction apparatus according to the present invention includes, as described in claim 1, a plurality of pipes formed by integrally mounting a friction cut plate on an upper surface of an upper floor of an underground structure. A pipe roof is formed in parallel with the front side of the part, and the rear part of this pipe roof is supported slidably forward on the upper surface of the blade edge attached to the front end opening of the underground structure. The underground structure is submerged by repeating the process of propelling all the pipes in the ground for a certain length in sequence and the step of propelling the underground structure in the ground for a certain length following this process. The pipe roof construction device when embedding in, and forming the upper space portion of the blade edge between the rear end of the pipe roof and the front surface of the upper floor portion of the underground structure in the work space portion, Flixi on each pipe above The working space is covered with these friction-cut plates by extending the cut-back plate backward and slidably mounted on the upper floor portion of the upper floor of the underground structure, and the rear end surface of each pipe A plurality of first support rods arranged in a comb-teeth shape are projected rearward at the upper end portion, and arranged in a comb-teeth shape on the front end surface side of the upper floor portion of the underground structure. A plurality of second support rods arranged in a comb-teeth shape slidably meshed with the first support rods in the front-rear direction are projected forward, and the first and second support rods are used to The lower surface of the friction cut plate that covers the work space is supported.
このように構成したパイプルーフの施工装置において、請求項2に係る発明は、上記各パイプの後端面上端部に後方に向かって前側水平固定板を突設してこの前側水平固定板上に第一支持棒の前部下面を固定、支持させている一方、地下構造物の上床部の前端面に刃口の後端枠部の後面を受止させてこの後端枠部の上端部に前方に向かって後側水平固定板を突設し、この後側水平固定板上に第二支持棒の後部下面を固定、支持させていることを特徴とする。さらに、請求項3に係る発明は、上記第一支持棒の後部が後側水平固定板上に摺動自在に支持されていると共に、第二支持棒の前部が前側水平固定板上に摺動自在に支持されていることを特徴とする。   In the pipe roof construction apparatus configured as described above, the invention according to claim 2 is characterized in that a front horizontal fixing plate is projected rearwardly at the upper end portion of the rear end surface of each pipe, and the front horizontal fixing plate is placed on the front horizontal fixing plate. While the front lower surface of the support bar is fixed and supported, the front end surface of the upper floor portion of the underground structure receives the rear surface of the rear end frame portion of the blade edge and forwards to the upper end portion of the rear end frame portion. A rear horizontal fixing plate is projected toward the rear, and the rear lower surface of the second support rod is fixed and supported on the rear horizontal fixing plate. Furthermore, in the invention according to claim 3, the rear portion of the first support rod is slidably supported on the rear horizontal fixing plate, and the front portion of the second support rod slides on the front horizontal fixing plate. It is characterized by being supported movably.
また、請求項4に係る発明は、上記パイプ内に前方地盤の掘削手段を備えている一方、作業空間部にこの掘削手段の駆動部をパイプ並設方向に移動可能に設けたことを特徴とし、請求項5に係る発明は、上記パイプルーフを形成している全てのパイプ内に、前方の地盤を掘削するカッタヘッドを有するスクリューオーガを配設している一方、作業空間部内における刃口の上面に横移動台車をパイプルーフの幅方向に移動可能に配設し、この横移動台車上に上記各パイプ内のスクリューオーガを回転駆動する駆動モータを備えた前後移動台と、この前後移動台を前後方向に移動させるパイプ推進ジャッキとを設けていることを特徴とする。   Further, the invention according to claim 4 is characterized in that a front ground excavating means is provided in the pipe, and a driving portion of the excavating means is provided in the working space so as to be movable in the pipe juxtaposition direction. In the invention according to claim 5, the screw auger having the cutter head for excavating the front ground is disposed in all the pipes forming the pipe roof, while the cutting edge in the working space is provided. A laterally movable carriage is disposed on the upper surface so as to be movable in the width direction of the pipe roof, and a longitudinally movable carriage provided with a drive motor for rotating the screw auger in each pipe on the laterally movable carriage, and the longitudinally movable carriage. And a pipe propulsion jack that is moved in the front-rear direction.
請求項1に係る発明によれば、地下構造物の上床部の前方側に並設したパイプ列からなるパイプルーフの後部を地下構造物の前端開口部に装着している刃口の上面に前後摺動自在に支持させていると共に各パイプの上面に載置しているフリクションカット板を後方に延長させて地下構造物の上床部の上面に摺動自在に載置させているので、フリクションカット板がパイプ上に隙間なく載置させることができて前方の切羽地盤から受ける抵抗をできるだけ小さくしながら各パイプを円滑に推進させることできるのは勿論、上記パイプルーフの後端と地下構造物の前端面との間によって形成している作業空間部の上方をパイプルーフの後端から地下構造物の上床部上に延長しているフリクションカット板列によって常に被覆しておくことができ、従って、上方の地盤が作業空間部内に崩落するのをこのフリクションカット板により確実に防止しながら、地下構造物の埋設施工作業を行うことができる。   According to the first aspect of the present invention, the rear part of the pipe roof composed of a pipe line arranged in parallel on the front side of the upper floor part of the underground structure is arranged on the upper surface of the blade edge that is attached to the front end opening of the underground structure. The friction cut plate, which is slidably supported and placed on the upper surface of each pipe, is extended rearward to be slidably placed on the upper surface of the upper floor of the underground structure. The plate can be placed on the pipe without any gap, and each pipe can be smoothly driven while minimizing the resistance received from the front face ground. Of course, the rear end of the pipe roof and the underground structure The upper part of the work space formed between the front end surface and the upper end of the pipe roof can always be covered with a friction cut plate array extending from the rear end of the pipe roof to the upper floor of the underground structure. It, that the upper ground is collapse into the working space while reliably prevented by the friction-cut plate, it is possible to perform the burying construction work of underground structures.
さらに、パイプルーフを形成している上記各パイプの後端面上端部に、櫛歯状に配列している複数本の第一支持棒を後方に向かって突設している一方、上記地下構造物の上床部の前端面側にこれらの櫛歯状に配列した第一支持棒に前後方向に摺動自在に噛合した櫛歯状に配列している複数本の第二支持棒を前方に向かって突設してこれらの第一、第二支持棒により上記作業空間部を被覆しているフリクションカット板の下面を支持させているので、フリクションカット板が上方地盤の荷重によって作業空間部内に向かって下方に撓むのを確実に防止することができ、その上、櫛歯状に配列した第一支持棒と第二支持棒とがパイプルーフや地下構造物の推進時においても常に互いに長さ方向に摺動自在に噛合しているので、作業空間部の上方のフリクションカット板部分を全長に亘って常時、強固に支持した状態を維持しながらパイプルーフの各パイプの推進作業とこの作業に後続して該フリクションカット板の下面に沿って地下構造物を推進、埋設させる作業とが能率よく行うことができる。   In addition, a plurality of first support rods arranged in a comb-teeth shape project rearwardly at the upper end of the rear end surface of each pipe forming a pipe roof, while the underground structure A plurality of second support rods arranged in a comb-teeth shape slidably meshed with the first support rods arranged in a comb-teeth shape on the front end surface side of the upper floor portion toward the front Since the lower surface of the friction cut plate covering the work space portion is supported by the first and second support rods, the friction cut plate is moved toward the work space portion by the load of the upper ground. It is possible to reliably prevent downward bending, and in addition, the first support bar and the second support bar arranged in a comb-teeth shape are always in the longitudinal direction even when propelling a pipe roof or an underground structure. Slidably meshed with the upper part of the work space. Propulsion work of each pipe of the pipe roof while following the work while maintaining the state where the friction cut plate part is always firmly supported over the entire length, and the underground structure is propelled along the lower surface of the friction cut plate The work of embedding can be performed efficiently.
また、上記櫛歯状に配列した第一支持棒と第二支持棒との噛合によって第一支持棒を後方に向けて突設している各パイプを、該二支持棒を前方に向けて突設している地下構造物に対して正確な推進方向に向けた状態を保持しながらこれらの第一支持棒と第二支持棒をガイドとしてその方向に精度よく確実に推進させることができる。   In addition, each pipe projecting with the first support rod facing backward by meshing the first support rod and the second support rod arranged in a comb-teeth shape projects with the two support rods facing forward. The first support bar and the second support bar can be used as a guide to accurately and reliably be propelled in that direction while maintaining the state in which the underground structure is provided in the correct propulsion direction.
請求項2に係る発明によれば、上記各パイプの後端面上端部に後方に向かって前側水平固定板を突設してこの前側水平固定板上に上記第一支持棒の前部下面を固定、支持させている一方、地下構造物の上床部の前端面に刃口の後端枠部の後面を受止させてこの後端枠部の上端部に前方に向かって後側水平固定板を突設し、この後側水平固定板上に上記第二支持棒の後部下面を固定、支持させているので、これらの前後水平固定板によって上記第一、第二支持棒を互いに水平状に噛合させた状態に支持して円滑に前後摺動させることができると共に、上方の地盤の荷重を強固に支持してフリクションカット板の撓みを確実に防止することができる。さらに、請求項3に係る発明によれば、上記第一支持棒の後部を後側水平固定板上に摺動自在に支持させていると共に、第二支持棒の前部を前側水平固定板上に摺動自在に支持させているので、これらの第一、第二支持棒は両側の水平固定板上に両端支持状態に支持された構造となってフリクションカット板を一層強固に支持することができる。   According to the second aspect of the present invention, the front horizontal fixing plate protrudes rearward from the upper end portion of the rear end surface of each pipe, and the front lower surface of the first support rod is fixed on the front horizontal fixing plate. The rear end frame part of the blade edge is received on the front end face of the upper floor part of the underground structure, and the rear horizontal fixing plate is moved forward on the upper end part of the rear end frame part. Since the rear lower surface of the second support rod is fixed and supported on the rear horizontal fixing plate, the first and second support rods are horizontally engaged with each other by the front and rear horizontal fixing plates. It is possible to smoothly slide back and forth while being supported in such a state, and to firmly support the load of the upper ground, and to reliably prevent the friction cut plate from bending. Further, according to the invention of claim 3, the rear portion of the first support rod is slidably supported on the rear horizontal fixing plate, and the front portion of the second support rod is supported on the front horizontal fixing plate. These first and second support rods are supported on both horizontal fixing plates in a state of being supported at both ends so that the friction cut plates can be supported more firmly. it can.
請求項4および請求項5に係る発明によれば、パイプルーフを形成している上記全てのパイプ内に、前方の地盤を掘削する掘削手段としてカッタヘッドを有するスクリューオーガを配設している一方、上記作業空間部内における刃口の上面によって形成された床面上に横移動台車をパイプルーフの幅方向に移動可能に配設し、この横移動台車上に上記各パイプ内のスクリューオーガを回転駆動する駆動モータを備えた前後移動台と、この前後移動台を前後方向に移動させるパイプ推進ジャッキとを設けて駆動部を構成しているので、この駆動部を構成した横移動台車を横移動させて所望のパイプの後方で停止させたのち、前後移動第前進させることより、この駆動モータの回転軸をパイプ内のスクリューオーガの後端部に結合させて前方の地盤を掘削させながら該パイプを円滑に推進させることができるものであり、従って、各パイプの後端側にそれぞれ掘削手段の駆動機構と推進ジャッキ等を設置することなく、軌道モータを備えた一台の駆動部を横移動させながら複数本のパイプを順次、確実に一定長、掘進させることができる。   According to the invention according to claim 4 and claim 5, the screw auger having a cutter head is disposed as an excavating means for excavating the front ground in all the pipes forming the pipe roof. A laterally movable carriage is arranged on the floor formed by the upper surface of the blade edge in the working space so as to be movable in the width direction of the pipe roof, and the screw auger in each pipe is rotated on the laterally movable carriage. The drive unit is composed of a front / rear moving table equipped with a drive motor for driving and a pipe propulsion jack that moves the front / rear moving table in the front / rear direction. After stopping at the rear of the desired pipe, it is moved forward and backward to connect the rotary shaft of this drive motor to the rear end of the screw auger in the pipe. The pipe can be smoothly propelled while excavating the pipe, and therefore, one unit equipped with a track motor without installing a driving mechanism and a propulsion jack of the excavating means on the rear end side of each pipe. A plurality of pipes can be sequentially and reliably excavated for a certain length while laterally moving the drive section.
本発明の具体的な実施の形態を図面について説明すると図1、図2は、道路や軌道(以下、軌道Aとして説明する)の直下の地中に、発進立坑B側から到達立坑(図示せず)に向かって地下構造物1を推進、埋設して軌道下を横断する地下道を構築する際に、地下構造物1の上床部1aの前方側に横幅が地下構造物1の幅に略等しいパイプルーフ2を配設して、このパイプルーフ2を一定長、到達立坑に向かう前方に推進させる工程と、この工程に後続して上記地下構造物1を一定長、推進させる工程とを繰り返し行うことにより、地中に地下構造物1を埋設している状態を示すもので、地下構造物1は前後方向に貫通した断面矩形状の既製の鉄筋コンクリート製函体からなり、その前端開口部に刃口3を装着している。   A specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a reaching shaft (not shown) from the start shaft B in the ground directly below a road or a track (hereinafter referred to as a track A). When the underground structure 1 is propelled and buried toward the ground to construct an underground passage that crosses under the track, the lateral width is approximately equal to the width of the underground structure 1 on the front side of the upper floor portion 1a of the underground structure 1. The pipe roof 2 is disposed and the pipe roof 2 is propelled forward by a predetermined length toward the reaching shaft, and the process of propelling the underground structure 1 by a predetermined length is repeated following this process. This shows the state in which the underground structure 1 is buried in the ground, and the underground structure 1 is made of a prefabricated reinforced concrete box having a rectangular cross section penetrating in the front-rear direction, and has a blade at its front end opening. Mouth 3 is attached.
刃口3は、地下構造物1の矩形断面と略同じ断面形状を有する後端枠部3aを地下構造物1の前端面に接合させて一体に固着していると共にこの後端枠部3aの前面上端部に、地下構造物1の上床部1aの上面から該上床部1aの厚みと同じ寸法だけ、又は、上床部1aの厚み以下の寸法だけ下方に位置させた状態で前方に向かって一定長さの台板3bを水平状に突設してあり、さらに、後端枠部3aの前面下端部にこの台板3bの長さよりも短く且つ先端を刃先部に形成している下枠部3cを前方に向かった突設していると共にこれらの台板3bと下枠部3cの前端間を上端から下端に向かって斜め後方に傾斜たし傾斜両側枠部3d、3dによって一体に連結してあり、この傾斜両側枠部3d、3dの前端に全長に亘って刃先部を形成してなるものである。   The blade edge 3 has a rear end frame portion 3a having substantially the same cross-sectional shape as the rectangular cross section of the underground structure 1, joined to the front end surface of the underground structure 1, and is fixed integrally therewith. Constantly moving forward from the upper surface of the upper floor portion 1a of the underground structure 1 with the same dimension as the thickness of the upper floor portion 1a or below the thickness of the upper floor portion 1a at the upper end of the front surface. A lower frame portion that has a base plate 3b having a length that protrudes horizontally, and that is shorter than the length of the base plate 3b at the front lower end portion of the rear end frame portion 3a and has a tip formed at the blade edge portion. 3c is projected forward and the front end of the base plate 3b and the lower frame portion 3c is inclined obliquely rearward from the upper end toward the lower end and is integrally connected by the inclined side frame portions 3d and 3d. The blade edge part is formed over the entire length at the front end of the inclined both side frame parts 3d, 3d.
このように構成している刃口3の上記台板3bにおける前半部上に上記パイプルーフ2を形成している複数本のパイプ2aの後部下面をそれぞれ単独的に前方に向かって移動可能に支持させている。パイプ2aは一定長さを有する断面矩形状の鋼管からなり、これらのパイプ2aを図1〜図3に示すように台板3bの幅方向に並列させることによって上記パイプルーフ2を形成している。なお、該パイプ2aは、その上面が上記地下構造物1の上床部1aの上面と面一状となる高さ(厚み)に形成されている。   The rear lower surfaces of the plurality of pipes 2a forming the pipe roof 2 on the front half of the base plate 3b of the blade edge 3 configured in this way are each supported movably forward. I am letting. The pipe 2a is made of a steel pipe having a rectangular cross section having a certain length, and the pipe roof 2 is formed by juxtaposing these pipes 2a in the width direction of the base plate 3b as shown in FIGS. . The upper surface of the pipe 2a is formed so as to be flush with the upper surface of the upper floor portion 1a of the underground structure 1 (thickness).
各パイプ2a内には前方の地盤の掘削手段としてスクリューオーガ4がそのオーガ軸の前端に一体に設けているカッタヘッド4aをパイプ2aの前端開口部から前方に臨ませた状態で回転自在に配設されていると共に、オーガ軸の後端部をパイプ2aの後端に固着している端面板2bの中央部に回転自在に支持させ、図4、図5に示すように、この端面板2bから後方に突出している後端にクラッチ片4bを一体に設けている。   In each pipe 2a, a screw auger 4 is integrally provided at the front end of the auger shaft as a means for excavating the front ground, and is rotatably arranged with the cutter head 4a facing forward from the front end opening of the pipe 2a. And the rear end portion of the auger shaft is rotatably supported by the central portion of the end face plate 2b fixed to the rear end of the pipe 2a. As shown in FIGS. 4 and 5, the end face plate 2b A clutch piece 4b is integrally provided at the rear end protruding rearward from the rear end.
さらに、上記各パイプ2aの平坦な上面には帯鋼板からなるフリクションカット板5が載置されていて該フリクションカット板5の前端をパイプ2aの前端上面に溶接によって一体に固着している。このフリクションカット板5の幅はパイプ2aの幅に略等しい寸法に形成されていて隣接するフリクションカット板5、5の対向側端面同士を互いに摺接状態にして横方向に並設していると共に図1、図2に示すように、全てのフリクションカット板5をパイプ2aの後端から後方に延長させてその後部を地下構造物1の上床部1aの上面に前後摺動自在に載置させた状態で上記発進立坑Bの坑口から後方に露出させている。   Further, a friction cut plate 5 made of a strip steel plate is placed on the flat upper surface of each pipe 2a, and the front end of the friction cut plate 5 is integrally fixed to the upper surface of the front end of the pipe 2a by welding. The width of the friction cut plate 5 is formed to be approximately equal to the width of the pipe 2a and the opposing end surfaces of the adjacent friction cut plates 5 and 5 are in sliding contact with each other and arranged side by side. As shown in FIGS. 1 and 2, all the friction cut plates 5 are extended rearward from the rear end of the pipe 2a, and the rear portion thereof is slidably placed on the upper surface of the upper floor portion 1a of the underground structure 1. In this state, it is exposed rearward from the entrance of the start pit B.
また、上記パイプルーフ2を形成しているパイプ2aの後端と地下構造物1の上床部1aの前端面に当接している上記後端枠部3aの上端部前面との間の刃口3の台板3b上の空間部を上床部1aの幅方向に長い作業空間部6に形成してあり、この作業空間部6をパイプ2aの後端上面から地下構造物1の上床部1aの上面間に架設状態で延長しているフリクションカット板列の長さ方向の中間部5aによって被覆してこの中間部5aにより上方の地盤を支持させ、作業空間部6内に土砂等が崩落するのを防止していると共に、このフリクションカット板5列の長さ方向の中間部5aの下面を、後に詳述するように各パイプ2aの後端面上端部から後方に突設している複数本の第一支持棒7と、地下構造物1の上床部1aの前端面に当接している上記後端枠部3aの上端部から前方に突設している複数本の第二支持棒8とによって支持させてフリクションカット板5が上方の地盤の荷重により下方に撓むのを防止している。   Further, the blade edge 3 between the rear end of the pipe 2a forming the pipe roof 2 and the front surface of the upper end portion of the rear end frame portion 3a in contact with the front end surface of the upper floor portion 1a of the underground structure 1 A space portion on the base plate 3b is formed in a work space portion 6 that is long in the width direction of the upper floor portion 1a. The work space portion 6 is formed from the upper surface of the rear end of the pipe 2a to the upper surface of the upper floor portion 1a of the underground structure 1. It is covered with the intermediate portion 5a in the length direction of the friction cut plate row extending in the spanned state in between, and the upper ground is supported by this intermediate portion 5a, so that the earth and sand etc. collapse in the work space portion 6. In addition, the lower surfaces of the intermediate portions 5a in the longitudinal direction of the five rows of the friction cut plates are protruded rearward from the upper end portions of the rear end surfaces of the pipes 2a as will be described in detail later. From the upper end of the rear end frame 3a that is in contact with the support bar 7 and the front end surface of the upper floor 1a of the underground structure 1 And is supported by the second supporting rod 8 of the plurality of being projected Friction cut plate 5 is prevented from bending downward by the load above the ground to.
上記刃口3の台板3b上における作業空間部6内には、地下構造物1の上床部1aの前端面に当接している上記後端枠部3aの上端部前面に沿って地下構造物1の幅方向に移動可能な横移動台車9が配設されてあり、この横移動台車9上にスクリューオーガ4を回転駆動するための回転駆動モータ11を設置している前後移動台10を配設している。詳しくは図4、図5に示すように、刃口3の上記台板2bの前部上面と刃口3の上記後端枠部3aの上端部前面とにパイプルーフ2の幅方向にレール12、12' を敷設して台板3b上のレール12上に横移動台車9の前端面における両側部に回転自在に軸支している車輪9a、9aを走行可能に支持させていると共に他方のレール12' に横移動台車9の後端面両側部に固着した断面コ字状の摺動部材9bを摺動自在に係合させることより、横移動台車9をパイプルーフ2の幅方向に一側端から他側端に向かって往復走行可能に配設している。   In the work space portion 6 on the base plate 3b of the blade edge 3, an underground structure along the front surface of the upper end portion of the rear end frame portion 3a that is in contact with the front end surface of the upper floor portion 1a of the underground structure 1. A laterally movable carriage 9 that is movable in the width direction of 1 is disposed. On the laterally movable carriage 9, a forward / backward movable base 10 is provided in which a rotational drive motor 11 for rotationally driving the screw auger 4 is installed. Has been established. Specifically, as shown in FIGS. 4 and 5, a rail 12 is provided in the width direction of the pipe roof 2 between the upper surface of the front plate 2 b of the blade edge 3 and the front surface of the upper edge portion of the rear frame portion 3 a of the blade edge 3. , 12 'are laid on the rail 12 on the base plate 3b to support the wheels 9a, 9a rotatably supported on both sides of the front end surface of the laterally moving carriage 9, and the other side. By slidingly engaging a sliding member 9b having a U-shaped cross section fixed to both sides of the rear end surface of the laterally movable carriage 9 on the rail 12 ', the laterally movable carriage 9 is moved to one side in the width direction of the pipe roof 2. It arrange | positions so that reciprocation can be carried out toward an other side end from an end.
さらに、横移動台車9の後端部中央に走行駆動モータ13を設置し、この走行駆動モータ13の下向きに突出させている回転軸にピニオン14を固着し、このピニオン14を上記刃口3の後端枠部3aの前面に上記レール12' と平行にして固着しているラック15に噛合させて走行駆動モータ13により横移動台車9を台板3b上で地下構造物1の幅方向に往復移動可能に構成している。また、この横移動台車9上に、上面に上記前後移動台10を載せてこの前後移動台10の両側端部における前後部に回転自在に軸支している車輪10a を上記横移動台車9の両側面に全長に亘って設けている凹条溝からなるレール部16、16に転動自在に嵌入、支持させている。   Further, a traveling drive motor 13 is installed at the center of the rear end of the laterally moving carriage 9, and a pinion 14 is fixed to a rotating shaft protruding downward from the traveling drive motor 13, and the pinion 14 is attached to the blade edge 3. The lateral movement carriage 9 is reciprocated on the base plate 3b in the width direction of the underground structure 1 by meshing with a rack 15 fixed in parallel with the rail 12 'on the front surface of the rear end frame 3a. It is configured to be movable. Further, on the laterally movable carriage 9, the longitudinally movable carriage 10 is placed on the upper surface, and wheels 10 a that are rotatably supported on the front and rear portions at both end portions of the longitudinally movable carriage 10 are attached to the laterally movable carriage 9. It is fitted and supported so as to be able to roll on rail portions 16 and 16 formed of concave grooves provided over the entire length on both side surfaces.
上記前後移動台10の中央部上に設置した回転駆動モータ11の回転軸の前端に、上記スクリューオーガ4のオーガ軸後端に固着したクラッチ片4bに係脱するクラッチ片11a を固着していると共に、前後移動台9の両側部上にパイプ推進ジャッキ17、17を設置してあり、これらのパイプ推進ジャッキ17、17の前端部を前後移動台10の両側部上面に固定すると共に後方に向けているこれらのパイプ推進ジャッキ17、17のロッドの先端間をスプレッダ18によって一体に連結し、パイプ推進ジャッキ17、17のロッドの伸長によって該スプレッダ18を刃口3の後端枠部3aに受止させ、この後端枠部3aに推進反力をとって前後移動台10を前進させることにより、回転駆動モータ11の回転軸に固着したクラッチ片11a をスクリューオーガ4のオーガ軸後端の上記クラッチ片4bに係合させると共に前後移動台10の前端部上に固着した当接枠材11b をパイプ2aの端面板2bから後方に突設している受止枠部2cに当接させて該パイプ2aを推進させるように構成している。   A clutch piece 11a that is engaged with and disengaged from a clutch piece 4b that is fixed to the rear end of the auger shaft of the screw auger 4 is fixed to the front end of the rotary shaft of the rotary drive motor 11 installed on the center of the front / rear moving table 10. In addition, pipe propulsion jacks 17 and 17 are installed on both sides of the front / rear moving table 9, and the front ends of these pipe propulsion jacks 17 and 17 are fixed to the upper surfaces of both side portions of the front / rear moving table 10 and directed rearward. The ends of the rods of these pipe propulsion jacks 17 and 17 are integrally connected by a spreader 18, and the spreader 18 is received by the rear end frame portion 3a of the blade edge 3 by the extension of the rods of the pipe propulsion jacks 17 and 17. The clutch piece 11a fixed to the rotary shaft of the rotary drive motor 11 is moved to the above-described rear end of the auger shaft of the screw auger 4 by stopping and taking forward reaction force on the rear end frame 3a. For clutch piece 4b The abutting frame member 11b fixed on the front end portion of the forward / backward moving platform 10 is brought into contact with the receiving frame portion 2c projecting rearward from the end face plate 2b of the pipe 2a to propel the pipe 2a. It is configured to make it.
また、上記スプレッダ15の後端両側部下面に、図5、図6に示すように、係止片19、19を下方に向かって突設する一方、上記横移動台車9の後端部両側上面にこれらの係止片19、19の前方側に配設されてこの係止片19の前端面を受止するストッパ片20を上方に向かって突設してあり、パイプ推進ジャッキ17、17のロッドの伸長させる際にはこのストッパ片20から該係止片19を後方に離間させ、ロッドの収縮時には、該係止片19をストッパ片20に受止させ、この状態からさらにロッドを収縮させることによりこの受止部を支点として前後移動台10を後退させるように構成している。   Further, as shown in FIGS. 5 and 6, locking pieces 19, 19 project downward from the lower surfaces of both sides of the rear end of the spreader 15, while the upper surfaces of both sides of the rear end of the laterally moving carriage 9. A stopper piece 20 disposed on the front side of the locking pieces 19 and 19 and receiving the front end surface of the locking piece 19 is projected upward, and the pipe propulsion jacks 17 and 17 When the rod is extended, the locking piece 19 is moved backward from the stopper piece 20, and when the rod is contracted, the locking piece 19 is received by the stopper piece 20, and the rod is further contracted from this state. Thus, the forward / backward moving table 10 is configured to move backward with the receiving portion as a fulcrum.
横移動台車9を設けている作業空間部6の上方は、上述したように、パイプ2aの後端上面から地下構造物1の上床部1aの上面間に架設状態で延長しているフリクションカット板列の長さ方向の中間部5aによって被覆されていると共にこの中間部5aは、第一、第二支持棒7、8によって支持されて下方に撓むのを防止されている。   As described above, the friction cut plate extending above the upper surface of the upper floor portion 1a of the underground structure 1 extends from the upper surface of the rear end of the pipe 2a to the upper side of the work space 6 where the laterally moving carriage 9 is provided. The intermediate portion 5a is covered with an intermediate portion 5a in the longitudinal direction of the row, and the intermediate portion 5a is supported by the first and second support rods 7 and 8 and is prevented from bending downward.
これらの第一、第二支持棒7、8によるフリクションカット板5の中間部5aの支持構造を詳述すると、各パイプ2aの後端における端面板2bの上端部に、上端から下方に向かって上記第一支持棒7の厚みに等しい寸法を存した部分に後方に向かって前側水平固定板21を突設してこの前側水平固定板21上に図5、図7に示すように、この前側水平固定板21の長さよりも長い複数本の第一支持棒7を第二支持棒8の横幅に等しい間隔毎に櫛歯状に配列してその前半部下面を水平固定板21に固着していると共に後半部を前側水平固定板21から後方に突出させている一方、刃口3の後端枠部3aにおける上端から下方に向かって第二支持棒8の厚みに等しい寸法を存した部分に前方に向かって後側水平固定板22を突設してこの後側水平固定板22上に、該後側水平固定板22の長さよりも長い複数本の第二支持棒8を第一支持棒7の横幅に等しい間隔毎に櫛歯状に配列してその後半部下面を水平固定板22上に固着していると共に前半部を後側水平固定板22から前方に突出させている。   The structure for supporting the intermediate portion 5a of the friction cut plate 5 by the first and second support rods 7 and 8 will be described in detail. The upper end portion of the end face plate 2b at the rear end of each pipe 2a is directed downward from the upper end. A front horizontal fixing plate 21 protrudes rearward from a portion having a dimension equal to the thickness of the first support rod 7, and the front side is fixed on the front horizontal fixing plate 21 as shown in FIGS. A plurality of first support bars 7 longer than the length of the horizontal fixing plate 21 are arranged in a comb shape at intervals equal to the width of the second support bar 8, and the lower surface of the front half is fixed to the horizontal fixing plate 21. And the rear half projecting rearward from the front horizontal fixing plate 21, while the rear end frame portion 3a of the blade edge 3 has a dimension equal to the thickness of the second support rod 8 from the upper end downward. A rear horizontal fixing plate 22 is projected toward the front, and the rear horizontal fixing plate 22 is placed on the rear horizontal fixing plate 22. A plurality of second support rods 8 longer than the length of the fixed plate 22 are arranged in a comb-like shape at intervals equal to the lateral width of the first support rod 7, and the lower surface of the rear half thereof is fixed on the horizontal fixing plate 22. And the front half protrudes forward from the rear horizontal fixing plate 22.
さらに、これらのこれらの櫛歯状に配列した第一支持棒7と第二支持棒8とは交互に噛合させて互いに前後方向に摺動自在に組み合わせていると共に、地下構造物1に先行してパイプルーフ2を一定長の推進させた時においても、第一支持棒7の後端部が後側水平固定板22の前端部上に、第二支持棒8の前端部が前側水平固定板21の後端部上にそれぞれ常に支持されるように構成して、これらの第一、第二支持棒7、8を前後水平固定板21、22とで両端支持状態に支持させ、フリクションカット板5の上記中間部5aを強固に受止するように構成している。また、パイプルーフ2の後端に対して地下構造物1が最も接近した状態においては、上記前側水平固定板21の後端と後側水平固定板22の前端とが接した状態或いは小間隔を存した状態で対向するように構成している。   Furthermore, these first support rods 7 and second support rods 8 arranged in a comb-teeth shape are alternately meshed with each other so as to be slidable in the front-rear direction and precede the underground structure 1. Even when the pipe roof 2 is propelled for a certain length, the rear end portion of the first support rod 7 is on the front end portion of the rear horizontal fixing plate 22, and the front end portion of the second support rod 8 is the front horizontal fixing plate. The first and second support rods 7 and 8 are supported on both ends by the front and rear horizontal fixing plates 21 and 22 so that they are always supported on the rear end portion of the friction plate 21. 5 is configured to firmly receive the intermediate portion 5a. In the state where the underground structure 1 is closest to the rear end of the pipe roof 2, a state where the rear end of the front horizontal fixing plate 21 and the front end of the rear horizontal fixing plate 22 are in contact with each other or a small interval is set. It is configured to face each other in the existing state.
一方、図1、図2において、上記地下構造物1は発進立坑Bの底面上に敷設した上面が平坦な底版(図示せず)上に前後方向に摺動移動自在に設置されていると共にこの地下構造物1の後端面と発進立坑Bの後側土留壁23の前面に配設した反力受け24間に複数個のスペーサ25を介して複数本の地下構造物推進ジャッキ26を配設し、これらの推進ジャッキ26の前端面を地下構造物1の後端面に接合したプレスリング27の後面に押し付けた状態で固定し、後方に向かって突出させている該推進ジャッキ26のロッドの先端を一定厚みを有する板材又は枠材からなる最前部のスペーサ25の前面に当接、受止させて、推進ジャッキ26の該ロッドを伸長させることにより地下構造物1を発進立坑Bの坑口から地中に推進、埋設させるように構成している。   On the other hand, in FIG. 1 and FIG. 2, the above-mentioned underground structure 1 is installed on a bottom plate (not shown) whose upper surface laid on the bottom surface of the start shaft B is slidably movable in the front-rear direction. A plurality of underground structure propulsion jacks 26 are arranged through a plurality of spacers 25 between the reaction force receivers 24 arranged on the rear end surface of the underground structure 1 and the front retaining wall 23 of the starting shaft B. The front end face of the propulsion jack 26 is fixed in a state where it is pressed against the rear face of the press ring 27 joined to the rear end face of the underground structure 1, and the tip of the rod of the propulsion jack 26 protruding rearward is fixed. The underground structure 1 is brought into the ground from the entrance of the start shaft B by extending the rod of the propulsion jack 26 by contacting and receiving the front surface of the foremost spacer 25 made of a plate material or a frame material having a certain thickness. It is configured to be propelled and buried in.
この地下構造物1の推進、埋設は、パイプルーフ2を構成している全てのパイプ2aを一定長だけ地中に順次、推進する工程と、このパイプルーフ2の一定長の推進工程後に地下構造物1を同一長さだけ推進させる工程とを順次、繰り返すことによって行われる。なお、各パイプ2a上から後方の地下構造物1の上床部1a上にまで引き出されているフリクションカット板5がパイプ2aと一体に推進して地中に一定長、埋入されると、発進立坑B内に露出している該フリクションカット板5の後端面に次の一定長さのフリクションカット板5の前端面を突き合わせ状にして溶接により継ぎ足す。   The underground structure 1 is propelled and buried by sequentially propelling all the pipes 2a constituting the pipe roof 2 into the ground by a certain length and after the certain length of propulsion process of the pipe roof 2. This is performed by sequentially repeating the step of propelling the object 1 by the same length. In addition, when the friction cut plate 5 drawn from the pipe 2a to the upper floor 1a of the underground structure 1 behind it is propelled together with the pipe 2a and embedded in the ground for a certain length, it starts. The front end surface of the friction cut plate 5 having a predetermined length is abutted against the rear end surface of the friction cut plate 5 exposed in the shaft B, and is added by welding.
パイプルーフ2を構成している全てのパイプ2aを一定長だけ推進するには、地下構造物1の上床部1aの前方側に設けている上記作業空間部6内において、横移動台車9を駆動してレール10、10' 上を走行させることにより推進すべき1本のパイプ2aの後方にまで移動させてその位置で停止させ、図4に示すようにこの横移動台車9上の前後移動台10の両側部上に配設しているパイプ推進ジャッキ17、17を伸長させることによってそのロッドの後端間を連結しているスプレッダ18を刃口3の後端枠部3aに当接、受止させ、この後端枠部3aに推進反力をとった状態にしてさらにロッドを伸長させると、前後移動台10が前進して、この前後移動台10上に設置した回転駆動モータ11の回転軸先端に装着しているクラッチ片11a がスクリューオーガ4のオーガ軸後端のクラッチ片4bに係合する。   In order to propel all the pipes 2a constituting the pipe roof 2 by a certain length, the laterally moving carriage 9 is driven in the work space 6 provided on the front side of the upper floor 1a of the underground structure 1. Then, it is moved to the rear of one pipe 2a to be propelled by running on the rails 10, 10 'and stopped at that position, and as shown in FIG. By extending pipe propulsion jacks 17 and 17 arranged on both sides of 10, the spreader 18 connecting the rear ends of the rods is brought into contact with and received by the rear end frame portion 3 a of the blade 3. When the rod is further extended with this rear end frame portion 3a taking a propulsion reaction force, the front / rear moving table 10 moves forward, and the rotation of the rotary drive motor 11 installed on the front / rear moving table 10 rotates. The clutch piece 11a attached to the shaft tip is the auger shaft rear end of the screw auger 4 The clutch piece 4b is engaged.
この状態にして回転駆動モータ11を作動させることによりスクリューオーガ4を回転させると共にパイプ推進ジャッキ17、17をさらに伸長させると、図8に示すように、上記刃口3の後側枠部3aに推進反力を受止させた状態で前後移動台10が前進し、スクリューオーガ4のカッタヘッド4aによって前方の地盤を掘削しながらパイプ2aがその上面に載置させているフリクションカット板5と一体的に推進する。   When the screw auger 4 is rotated by operating the rotational drive motor 11 in this state and the pipe propulsion jacks 17 and 17 are further extended, as shown in FIG. The forward / backward moving table 10 moves forward while receiving the propulsion reaction force, and the pipe 2a is integrated with the friction cut plate 5 placed on the upper surface while excavating the ground in front by the cutter head 4a of the screw auger 4. Promote.
パイプ2aが推進前においては、図5、図7に示すように、該パイプ2aの後端から後方に突設している上記前側水平固定板21の後端と刃口3の後端枠部3aの前端から前方に突設している上記後側水平固定板22の前端とは接した状態または近接した状態にあると共に、櫛歯状に並列している第一支持棒7の後半部は後側水平固定板22上に支持され、第二支持棒8の前半部は前側水平固定板21上に支持された状態にあり、この状態からパイプ2aが推進すると、図8、図9に示すように、パイプ2aと一体の前側固定板21が刃口3側の後側固定板22に対して前方に推進長だけ離間し、第一支持棒7の後端部が後側水平固定板22の前端部上に、第二支持棒8の前端部が前側水平固定板21の後端部上にそれぞれ支持された状態となる。   Before the pipe 2a is propelled, as shown in FIGS. 5 and 7, the rear end of the front horizontal fixing plate 21 projecting rearward from the rear end of the pipe 2a and the rear end frame portion of the blade mouth 3 are provided. The rear half of the first support rod 7 that is in contact with or close to the front end of the rear horizontal fixing plate 22 projecting forward from the front end of 3a and that is parallel to the comb teeth 8 and 9, when the pipe 2a is propelled from this state, it is supported on the rear horizontal fixing plate 22 and the front half of the second support bar 8 is supported on the front horizontal fixing plate 21. Thus, the front fixing plate 21 integral with the pipe 2a is spaced forward by the propulsion length with respect to the rear fixing plate 22 on the blade edge 3 side, and the rear end portion of the first support rod 7 is the rear horizontal fixing plate 22 The front end portion of the second support bar 8 is supported on the rear end portion of the front horizontal fixing plate 21 on the front end portion.
こうして、一本のパイプ2aを一定長、地中に掘進したのち、パイプ推進ジャッキ17、17を収縮させると、スプレッダ18が反力受けである刃口3の後端枠部3aから前方に離間すると共に、該スプレッダ18から下方に突設している係止片19が横移動台車9の後端に上方に向かって突設しているストッパ片20の後端面に当接してそれ以上の離間が阻止され、この状態からパイプ推進ジャッキ17、17をさらに収縮させると、前後移動台10が後退して回転駆動モータ11の回転軸とスクリューオーガ4のオーガ軸とを連結していたクラッチ片4b、11a 同士の連結が解かれる。   Thus, after digging one pipe 2a into the ground for a certain length and then contracting the pipe propulsion jacks 17 and 17, the spreader 18 is spaced forward from the rear end frame 3a of the blade edge 3 which is a reaction force receiver. At the same time, the locking piece 19 projecting downward from the spreader 18 abuts on the rear end surface of the stopper piece 20 projecting upward from the rear end of the laterally moving carriage 9, and is further separated from it. When the pipe propulsion jacks 17 and 17 are further contracted from this state, the forward / backward moving base 10 moves backward to connect the rotary shaft of the rotary drive motor 11 and the auger shaft of the screw auger 4 to the clutch piece 4b. , 11a is uncoupled.
しかるのち、横移動台車9を次の推進すべきパイプ2aの後方によって横移動させ、再び上記同様にしてパイプ推進ジャッキ17、17のロッドを伸長させてスプレッダ18を刃口3の後端枠部3aに受止させ、さらに、該ロッドを伸長させて前後移動台10を前進させることにより回転駆動モータ11をスクリューオーガ4のオーガ軸にクラッチ片4b、11a を介して連結し、この状態にしてスクリューオーガ4を回転させると共にパイプ推進ジャッキ17、17を先に推進したパイプ2aと同一長さだけ推進させる。   After that, the laterally movable carriage 9 is laterally moved behind the next pipe 2a to be propelled, and the rods of the pipe propulsion jacks 17 and 17 are again extended in the same manner as described above, so that the spreader 18 is attached to the rear end frame portion of the blade mouth 3. 3a, and the rod 10 is extended to move the forward / backward moving table 10 forward so that the rotary drive motor 11 is connected to the auger shaft of the screw auger 4 via the clutch pieces 4b and 11a. The screw auger 4 is rotated and the pipe propulsion jacks 17 and 17 are propelled by the same length as the pipe 2a propelled first.
以下、同様にしてパイプ2aを順次、掘進させ、パイプルーフ2を構成しているこれらの全てのパイプ2aを一定長、掘進させたのち、発進立坑B内に配設している複数本の推進ジャッキ26を伸長させ、スペーサ25を介して反力受け24に反力をとって地下構造物1をその上床部1aの上面をフリクションカット板列の下面に摺接させながら上記パイプルーフ2と同じ推進長だけ前方に推進させる。この際、地下構造物1の前端開口部に装着している刃口3が地下構造物1と一体的に前進し、その後端枠部3aの上端部から前方に突設している第二支持棒8がパイプ2aの後端から突出している第一支持棒7の側面にその対向側面を摺接させながら前進すると共にこの第二支持棒8を支持している後側水平固定板22も一体に前進し、作業空間部を被覆しているフリクションカット板列の中間部5aを上記第一、第二支持棒7、8により水平状態に保持しながら、このフリクションカット板列部分の下面に沿って地下構造物1の上床部1aを円滑に前進移動させることができる。   Thereafter, the pipes 2a are sequentially excavated in the same manner, and after all of these pipes 2a constituting the pipe roof 2 have been excavated for a certain length, a plurality of propulsion units disposed in the start shaft B are provided. The same as the pipe roof 2 described above, while extending the jack 26 and applying a reaction force to the reaction force receiver 24 via the spacer 25 so that the upper surface of the upper floor portion 1a slides on the lower surface of the friction cut plate row. Only the propulsion head is propelled forward. At this time, the second support in which the blade edge 3 attached to the front end opening of the underground structure 1 advances integrally with the underground structure 1 and projects forward from the upper end of the rear frame 3a. The bar 8 advances while the opposite side surface slides on the side surface of the first support bar 7 protruding from the rear end of the pipe 2a, and the rear horizontal fixing plate 22 supporting the second support bar 8 is also integrated. The intermediate portion 5a of the friction cut plate row covering the working space is held in a horizontal state by the first and second support rods 7 and 8 and is kept along the lower surface of the friction cut plate row portion. Thus, the upper floor 1a of the underground structure 1 can be moved forward smoothly.
また、地下構造物1と一体に刃口3が前進して前方の地盤を掘削すると共にこの刃口3で囲まれた前方の地盤は適宜な掘削手段によって掘削し、掘削した土砂を刃口3から地下構造物1内を通じて発進立坑B側に排出する。この際、上記各パイプ2a内に設けているスクリューオーガ4によって掘削された土砂はパイプ2aの後端部から刃口3内に排出され、刃口前方の掘削土砂と共に地下構造物1内を通じて発進立坑B側に排出される。   Further, the blade edge 3 is advanced integrally with the underground structure 1 to excavate the front ground, and the front ground surrounded by the blade edge 3 is excavated by an appropriate excavation means, and the excavated earth and sand is cut into the blade edge 3. To the start shaft B side through the underground structure 1. At this time, the earth and sand excavated by the screw auger 4 provided in each pipe 2a is discharged from the rear end of the pipe 2a into the blade 3 and starts through the underground structure 1 together with the excavated earth and sand in front of the blade. It is discharged to the shaft B side.
このように、前後移動台10を配設している横移動台車9によって各パイプ2aを水平方向に順次掘進させてこれらのパイプ列よりなるパイプルーフ2を一定長、到達立坑側に向かって前方の地中に推進させる工程と、この工程後に、発進立坑B側に配設している推進ジャッキ27を伸長させて上記パイプルーフ2と同一距離だけパイプルーフ2の下面に接して地下構造物1を前方に推進させる工程とを繰り返し行うことにより、地下構造物1を到達立坑側に到達させ、発進立坑Bと該到達立坑間にこの地下構造物1による地下道を構築する。   In this way, the pipes 2a are sequentially excavated in the horizontal direction by the laterally moving carriage 9 on which the front and rear moving base 10 is arranged, and the pipe roof 2 formed of these pipe rows is moved forward by a certain length toward the reaching vertical shaft side. And after this step, the propulsion jack 27 disposed on the start shaft B side is extended to contact the lower surface of the pipe roof 2 by the same distance as the pipe roof 2 and the underground structure 1 The underground structure 1 is made to reach the reaching shaft side by repeatedly performing the step of propelling forward, and an underground passage by the underground structure 1 is constructed between the starting shaft B and the reaching shaft.
この際、パイプルーフ2が一定長、推進する毎に、各パイプ2a上にその前端のみをパイプ2aの前端上面に溶接によって固着しているフリクションカット板5も一体に推進して発進立坑B内に突設している部分の長さが短くなるので、該フリクションカット板5の後端部が発進立坑Bから地中に進入する前に、各フリクションカット板5の後端面に一定長さを有する新たなフリクションカット板の前端面を接合させた状態で溶接することにより一体に接続して上記同様に、再び、パイプルーフ2の推進と、この推進に後続して地下構造物1の推進とを繰り返し行う。   At this time, each time the pipe roof 2 is propelled for a certain length, the friction cut plate 5 in which only the front end of each pipe 2a is fixed to the upper surface of the front end of the pipe 2a by welding is also integrally propelled to the start shaft B. Therefore, before the rear end portion of the friction cut plate 5 enters the ground from the start shaft B, a certain length is applied to the rear end surface of each friction cut plate 5. As shown above, the pipe roof 2 is propelled again, and the propulsion of the underground structure 1 is carried out again after the propulsion, as described above. Repeat.
同様に、地下構造物1が所定長、地中に掘進される毎に、発進立坑B内においてその掘進長に応じた厚みを有するスペーサ25を推進ジャッキ26の後方側に介在させると共に、地下構造物1によって構築すべき地下道の長さが長い場合には、該地下道の長さを数分割した一定長さの地下構造物を順次、接合、連結させながら推進させて到達立坑に到達させ、発進立坑Bと該到達立坑間にこの地下構造物1による地下道を構築するものである。なお、上記実施の形態においては、軌道Aの直下地盤に地下構造物1を施工しているが、道路下においても上記同様な方法によって地下構造物1を施工し得るのは勿論である。   Similarly, every time the underground structure 1 is excavated into the ground for a predetermined length, a spacer 25 having a thickness corresponding to the excavation length is interposed in the start shaft B on the rear side of the propulsion jack 26, and the underground structure When the length of the underground passage to be constructed by the object 1 is long, the underground structure of a certain length obtained by dividing the length of the underground passage into several parts is sequentially joined and connected to be propelled to reach the reaching shaft, and start An underground passage by the underground structure 1 is constructed between the shaft B and the reaching shaft. In the above-described embodiment, the underground structure 1 is constructed on the direct ground board of the track A, but it is needless to say that the underground structure 1 can be constructed by the same method as described above even under the road.
地下構造物を地中に推進させている状態の簡略縦断側面図。A simplified longitudinal side view of an underground structure propelled underground. その簡略平面図。The simplified plan view. パイプルーフの簡略正面図。The simplified front view of a pipe roof. 横移動台車を推進すべきパイプの後方に位置させた状態の一部省略平面図。The partially abbreviate | omitted top view of the state which was located in the back of the pipe which should drive a horizontal movement trolley | bogie. その縦断側面図。The longitudinal side view. そのX−X線における縦断正面図。The longitudinal front view in the XX line. 第一支持棒と第二支持棒との噛合状態を示す平面図。The top view which shows the meshing state of a 1st support bar and a 2nd support bar. パイプルーフを一定長、推進させた状態の簡略縦断側面図。A simplified longitudinal side view of a pipe roof propelled for a certain length. その時の第一支持棒と第二支持棒との噛合状態を示す平面図。The top view which shows the meshing state of the 1st support bar and the 2nd support bar at that time.
符号の説明Explanation of symbols
A 軌道
B 発進立坑
1 地下構造物
2 パイプルーフ
2a パイプ
3 刃口
4 スクリューオーガ
5 フリクションカット板
6 作業空間部
7 第一支持棒
8 第二支持棒
9 横移動台車
10 前後移動台
11 回転駆動モータ
17 パイプ推進ジャッキ
21 前側水平固定板
22 後側水平固定板
26 推進ジャッキ
A Track B Start shaft 1 Underground structure 2 Pipe roof
2a Pipe 3 Cutting edge 4 Screw auger 5 Friction cut plate 6 Working space 7 First support bar 8 Second support bar 9 Horizontally moving carriage
10 Back and forth moving platform
11 Rotation drive motor
17 Pipe jack
21 Front horizontal fixing plate
22 Rear horizontal fixing plate
26 Propulsion jack

Claims (5)

  1. 上面にフリクションカット板を一体的に載置してなる複数本のパイプを地下構造物の上床部の前方側に並設することによりパイプルーフを形成し、このパイプルーフの後部を地下構造物の前端開口部に装着している刃口の上面に前方に向かって摺動可能に支持させて、全てのパイプを順次、地中に一定長、推進させる工程と、この工程に後続して上記地下構造物を地中に一定長、推進させる工程とを繰り返し行うことにより地下構造物を地中に埋設施工する際の上記パイプルーフの施工装置であって、パイプルーフの後端と地下構造物の上床部の前面との間における上記刃口の上方空間部を作業空間部に形成すると共に、上記各パイプ上のフリクションカット板を後方に延長させて上記地下構造物の上床部上面に前後摺動自在に載置させることによりこれらのフリクションカット板で上記作業空間部を被覆してあり、さらに、各パイプの後端面上端部に、櫛歯状に配列している複数本の第一支持棒を後方に向かって突設している一方、上記地下構造物の上床部の前端面側にこれらの櫛歯状に配列した第一支持棒に前後方向に摺動自在に噛合した櫛歯状に配列している複数本の第二支持棒を前方に向かって突設してこれらの第一、第二支持棒により上記作業空間部を被覆しているフリクションカット板の下面を支持していることを特徴とするパイプルーフの施工装置。   A pipe roof is formed by arranging a plurality of pipes on which the friction cut plates are integrally placed on the upper surface in front of the upper floor portion of the underground structure, and the rear portion of the pipe roof is connected to the underground structure. A process of propelling all the pipes in the ground for a certain length in sequence, with the upper surface of the blade edge attached to the front end opening slidably supported, and following this process, A pipe roof construction apparatus for burying an underground structure in the ground by repeatedly performing a process of propelling the structure to the ground for a certain length, comprising the rear end of the pipe roof and the underground structure The upper space part of the blade edge between the front surface of the upper floor part is formed in the work space part, and the friction cut plate on each pipe is extended rearward to slide back and forth on the upper surface of the upper floor part of the underground structure. It can be placed freely The above working space is covered with these friction cut plates, and a plurality of first support rods arranged in a comb-teeth shape projecting rearward at the upper end of the rear end surface of each pipe On the other hand, a plurality of comb teeth arranged in a slidable manner in the front-rear direction on the first support rods arranged in the comb teeth shape on the front end surface side of the upper floor portion of the underground structure. A pipe roof characterized in that a second support rod is projected forward and the lower surface of the friction cut plate covering the working space portion is supported by these first and second support rods. Construction equipment.
  2. 各パイプの後端面上端部に後方に向かって前側水平固定板を突設してこの前側水平固定板上に第一支持棒の前部下面を固定、支持させている一方、地下構造物の上床部の前端面に刃口の後端枠部の後面を受止させてこの後端枠部の上端部に前方に向かって後側水平固定板を突設し、この後側水平固定板上に第二支持棒の後部下面を固定、支持させていることを特徴とする請求項1に記載のパイプルーフの施工装置。   A front horizontal fixing plate protrudes rearward from the upper end of the rear end surface of each pipe, and the front lower surface of the first support bar is fixed and supported on the front horizontal fixing plate, while the upper floor of the underground structure The rear end of the rear edge frame part of the blade edge is received on the front end surface of the part, and a rear horizontal fixing plate is projected forward from the upper end part of the rear end frame part on the rear horizontal fixing plate. 2. The pipe roof construction apparatus according to claim 1, wherein a rear lower surface of the second support bar is fixed and supported.
  3. 第一支持棒の後部が後側水平固定板上に摺動自在に支持されていると共に、第二支持棒の前部が前側水平固定板上に摺動自在に支持されていることを特徴とする請求項2に記載のパイプルーフの施工装置。   The rear portion of the first support rod is slidably supported on the rear horizontal fixing plate, and the front portion of the second support rod is slidably supported on the front horizontal fixing plate. The pipe roof construction apparatus according to claim 2.
  4. パイプ内に前方地盤の掘削手段を備えている一方、作業空間部にこの掘削手段の駆動部をパイプ並設方向に移動可能に設けたことを特徴とする請求項1に記載のパイプルーフの施工装置。   2. The construction of a pipe roof according to claim 1, wherein the pipe is provided with excavation means for the front ground, and a drive portion of the excavation means is provided in the work space so as to be movable in the pipe juxtaposition direction. apparatus.
  5. パイプルーフを形成している全てのパイプ内に、前方の地盤を掘削するカッタヘッドを有するスクリューオーガを配設している一方、作業空間部内における刃口の上面に横移動台車をパイプルーフの幅方向に移動可能に配設し、この横移動台車上に上記各パイプ内のスクリューオーガを回転駆動する駆動モータを備えた前後移動台と、この前後移動台を前後方向に移動させるパイプ推進ジャッキとを設けていることを特徴とする請求項4に記載のパイプルーフの施工装置。   A screw auger with a cutter head for excavating the front ground is arranged in all the pipes forming the pipe roof, while a laterally moving carriage is placed on the upper surface of the blade edge in the working space. A longitudinally movable table provided with a drive motor that is arranged so as to be movable in the direction and rotationally drives the screw auger in each pipe on the laterally movable carriage, and a pipe propulsion jack that moves the longitudinally movable table in the longitudinal direction The pipe roof construction device according to claim 4, wherein the pipe roof construction device is provided.
JP2006088877A 2006-03-28 2006-03-28 Pipe roof construction equipment Expired - Fee Related JP4557918B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101206996B1 (en) 2010-02-09 2012-11-30 주식회사 특수건설 The tunnel construction method for which point moving roof cell was used

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927833B2 (en) * 1978-07-25 1984-07-09 Koichi Uemura
JPH06294282A (en) * 1993-04-06 1994-10-21 Okumura Corp Method and device for propelling pipe roof
JPH08319792A (en) * 1995-05-24 1996-12-03 East Japan Railway Co Burying construction method of underground construction member
JPH09279979A (en) * 1996-04-11 1997-10-28 Shimizu Corp Elevating device for horizontal boring machine
JP2004232458A (en) * 2004-05-19 2004-08-19 Okumura Corp Construction device for underground structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927833B2 (en) * 1978-07-25 1984-07-09 Koichi Uemura
JPH06294282A (en) * 1993-04-06 1994-10-21 Okumura Corp Method and device for propelling pipe roof
JPH08319792A (en) * 1995-05-24 1996-12-03 East Japan Railway Co Burying construction method of underground construction member
JPH09279979A (en) * 1996-04-11 1997-10-28 Shimizu Corp Elevating device for horizontal boring machine
JP2004232458A (en) * 2004-05-19 2004-08-19 Okumura Corp Construction device for underground structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101206996B1 (en) 2010-02-09 2012-11-30 주식회사 특수건설 The tunnel construction method for which point moving roof cell was used

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