JPS61164409A - Pipeline lead-in method - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は１１小ロ径トンネル内へ通信ケーブル等を収容
する管路を引込む工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a construction method for leading a conduit for accommodating communication cables etc. into an 11-small diameter tunnel.

（従来の技術） 従来、ヒユーム管推進等で築造された小ロ径ト／ネル内
に複数本の管路を引込む工法として、第５図および第６
図に示すように鋼材加工等により製作したそシタ上に管
路１をスペーサ４を用いて段積みした状態で組み立て、
ウィンチ６でトンネル５内に引込むようにするものであ
る。(Prior art) Conventionally, as a method of drawing multiple pipes into a small diameter tunnel constructed by propulsion of humid pipes, etc., the methods shown in Figs. 5 and 6 are used.
As shown in the figure, pipe lines 1 are assembled in a stacked manner using spacers 4 on a structure made by processing steel materials, etc.
It is designed to be pulled into the tunnel 5 with a winch 6.

（発明が解決しようとする問題点） 上記従来の工法では、そり等の製作に要する費用も大き
く、また管路引込後も管路と共にトンネル内に残すので
再利用ができず、経済的に不利であった。さらにトンネ
ル断面の使用効率が低い等の問題点があった。(Problems to be solved by the invention) In the conventional construction method described above, the cost required for manufacturing the sled etc. is large, and since the pipe is left in the tunnel together with the pipe after the pipe is drawn, it cannot be reused, which is economically disadvantageous. Met. Furthermore, there were other problems such as low utilization efficiency of the tunnel cross section.

そこで、そり等を用いず直接管路に張力をかけて引込む
直接けん１工法が検討されてきだが、管路に直接張力が
かかるため、管路継手部が接着不良等により離脱する恐
れがあること、条数が多くなると段くずれが生じやすく
なり、そのため剛性の高い金物等を用いて結束するとト
ンネル内面に引っかかる恐れがあること、先端けん刺部
の信頼ある固定が困難である等の問題点があった。Therefore, the direct ken 1 method has been considered, in which tension is applied directly to the pipe without using a warp, etc. However, since tension is applied directly to the pipe, there is a risk that the pipe joint may separate due to poor adhesion, etc. However, as the number of threads increases, steps are more likely to collapse, and therefore, there is a risk that the threads may get caught on the inner surface of the tunnel if they are tied using rigid metal objects, etc., and it is difficult to reliably fix the tip of the thread. there were.

本発明は管路の直接けん１工法において、上記のような
問題点を解消して、引込に要する材料費等の節減によっ
て経済性を高めると共にトンネル断面の効率的利用を図
ることを目的とするものである。The present invention aims to solve the above-mentioned problems in the direct pipe construction method, improve economic efficiency by reducing the cost of materials required for lead-in, and efficiently utilize the tunnel cross section. It is something.

（発明の構成） 第１図は本発明の実施例を示し、小口径トンネル５が完
成した後、一方の立坑６内にウィンチ３を設置し、又け
ん引用ワイヤー９をトンネル５内に予め通しておく、つ
ぎにトンネル５内に引込むべき全管路１に、第２図に示
すように全管路１の中の１本の管路１の内部にロッド８
を挿通し、また後部に前後を板体１２に挾まれたゴム等
の弾性体１１と、これら画板体１２および弾性体１１を
貫通させたボルト１３と、このボルト１３に挿嵌された
バイブ１４と、このパイプ１４を前方の板体１２に押し
つけて弾性体１１を圧迫して拡径変形せしめるためのナ
ツト１５と、治具本体７に固定するためのナンド１６　
、１７とよりなる管路把持子１０の上記弾性体１１を、
ロッド８を挿入した管路以外の必要な数の各管路に挿入
してそれらの管路に圧着させて先端部外周が後方に向い
曲面をなす椀形をした治具本体７に固定され、またロッ
ド８の先端部は治具本体７にナツト１８で取付けられ、
全管路の先端部は治具本体７内へ入る。つぎに第辱図に
一例を示すように、構造的に安定になるような最小単位
の５本の管路１を３角形状に纏めて同図（ａ）に示すよ
うにバンド１９にて結束し、これに他の２本の管路１を
同図（ｂ）のように密着せしめて先に結束した中の１本
と三角形状にこれをバンド１９で結束し、これに更に２
本の管路１を図示のように重ね、この加えた２本の管路
１と３角形状になる既納束のうちの１本の管路１とを結
束し、最後に全体の上から更にバンド１９で結束する。(Structure of the Invention) FIG. 1 shows an embodiment of the present invention, in which after a small diameter tunnel 5 is completed, a winch 3 is installed in one shaft 6, and a traction wire 9 is passed through the tunnel 5 in advance. Next, as shown in FIG.
An elastic body 11 made of rubber or the like is sandwiched between the plate bodies 12 at the front and back at the rear, a bolt 13 that passes through the drawing plate body 12 and the elastic body 11, and a vibrator 14 inserted into the bolt 13. , a nut 15 for pressing this pipe 14 against the front plate body 12 and compressing the elastic body 11 to expand its diameter, and a nut 16 for fixing it to the jig main body 7.
, 17, the elastic body 11 of the conduit gripper 10 is made of
The rod 8 is inserted into the necessary number of pipes other than the pipe into which it was inserted and crimped onto those pipes, and fixed to the jig main body 7, which has a bowl shape with the outer periphery of the tip facing backward and forming a curved surface. The tip of the rod 8 is attached to the jig body 7 with a nut 18,
The tips of all the pipes enter into the jig main body 7. Next, as shown in Figure 1, five pipes 1, which are the smallest units that are structurally stable, are gathered into a triangular shape and bound with bands 19 as shown in Figure 1 (a). Then, as shown in the same figure (b), the other two pipes 1 are brought into close contact with this, and this is tied with the band 19 in a triangular shape with one of the pipes tied earlier.
Stack the two pipes 1 as shown in the diagram, tie together the two added pipes 1 and one pipe 1 from the triangular bundle, and finally from the top of the whole Furthermore, tie with band 19.

管路数が異なる場合も同様の手法で結束してゆけばよい
。バンド１９の張力は最小単位の結束に比べ、全体の結
束の場合を強くすることにより、管路を密着状態にでき
、段くずれを完全に防止することができる。またバンド
１９による結束位置は、小口径トンネル内面との接触に
よるバンドの摩耗を防止するため、第４図に示すように
管路１のソケット２１近くで行なう。つぎにワイヤ９の
後端を治具本体７に設けたけん引用フック２０に取りつ
け、ウィンチ６で管路１の後端近くまでトンネル５内に
引き込む。引き込んだ各管路１の後端に、それぞれ新た
な管路１を接続し、その際またロッド８も接続し、各管
路１を前述と同様に結束し、前記と同様ウィンチ３によ
りトンネル５内へ引き込む。以後管路の接続、結束、ロ
ッド８の接続をし、ウィンチ３によるトンネル５内への
引込み作業を繰返して行なう。Even if the number of pipes is different, the pipes can be bundled using the same method. By making the tension of the band 19 stronger when the whole band is tied as compared to when the smallest unit is tied, the pipe can be brought into close contact, and step collapse can be completely prevented. Furthermore, the band 19 is tied near the socket 21 of the conduit 1 as shown in FIG. 4 in order to prevent the band from being worn out due to contact with the inner surface of the small-diameter tunnel. Next, the rear end of the wire 9 is attached to a towing hook 20 provided on the jig body 7, and the wire 9 is pulled into the tunnel 5 to near the rear end of the conduit 1 using the winch 6. A new pipe line 1 is connected to the rear end of each pipe line 1 that has been drawn in, and at this time, the rod 8 is also connected, each pipe line 1 is tied in the same manner as described above, and the tunnel 5 is closed using the winch 3 as described above. Pull inward. Thereafter, the pipes are connected, tied together, and the rods 8 are connected, and the work of pulling the pipes into the tunnel 5 using the winch 3 is repeated.

その場合、ロッド８の管路１からの突出端に全管路の後
端を押さえるアンカを取りつけてゆけば、このアンカに
よって全管路の後端を押しながら引込まれてゆくので、
管路の接続部に引込力が働かないので不良な接着接続部
があっても、その部分で離脱するのを防ぐ。まだアンカ
を取付けなく、ロッド８のみであっても、もし万一管路
接続部での離脱を生ずることがあれば、ロッド８の後端
を反対方向に引いてトンネル５内へ引込んだ管路１を引
き戻すことができる。管路１の引込みが終れば、治具本
体７、管路把持子１０、ロッド８等を取シ外して回収す
る。In that case, if you attach an anchor to the protruding end of the rod 8 from the conduit 1 to hold down the rear ends of all the conduits, this anchor will push the rear ends of all the conduits as they are drawn in.
Since no pulling force is applied to the conduit connection, even if there is a defective adhesive connection, separation at that part is prevented. Even if the anchor is not installed yet and only the rod 8 is attached, if the pipe should come apart at the pipe connection, pull the rear end of the rod 8 in the opposite direction and pull the pipe pulled into the tunnel 5. Route 1 can be pulled back. Once the pipe line 1 has been drawn in, the jig main body 7, pipe line gripper 10, rod 8, etc. are removed and recovered.

（発明の効果） 以上のように本発明によれば、管路把持子により管路を
加工することなく把持することができ、またロッドによ
シ管路接続部に離脱を生ずることがあっても管路を回収
することができ、あるいはロッドの管路突出端に全管路
後端を押さえるアンカを取シつけてゆくことによυ管路
接続部の離脱を生じないで管路を引込み得る。しかもま
た治具本体が椀形をなすので、円滑に引込みすることが
できる。また管路を５本ずつを一単位として６角形状の
安定な形状にバンドで順次結束してゆき最外周を更にバ
ンドで結束することで管路を密接した状態で引込むこと
ができ、小口径トンネル断面を有効に利用でき、かつ段
くずれを起すことなく信頼性の高い管路引込みが容易と
なシ、更に引込用治具は使用後に取り外して繰シ返し利
用し得るので工事費を低減でき、経済的効果が大である
。(Effects of the Invention) As described above, according to the present invention, the pipe can be held by the pipe gripper without processing the pipe, and the rod can prevent the pipe from coming off at the connecting part. Alternatively, by attaching an anchor to the protruding end of the rod to hold down the rear end of all the pipes, it is possible to pull the pipes in without causing separation of the pipe connections. obtain. Furthermore, since the jig body is bowl-shaped, it can be retracted smoothly. In addition, by sequentially bundling five pipes into a stable hexagonal shape with a band and further bundling the outermost periphery with a band, the pipes can be drawn in closely together, and small diameter The tunnel cross section can be used effectively, and the pipe can be drawn in with high reliability without causing step collapse.Furthermore, the drawing jig can be removed after use and used repeatedly, reducing construction costs. , the economic effect is large.

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

第１図は本発明の実施例を示す断面図、第２図は引込用
治具の使用状態を示す断面図、第６図は管路の結束方法
の説明図、第４図はバンドによる管路結束位置の説明図
、第５図は従来の管路引込工法の説明図、第６図は第５
図のＡ−Ａ線断面図を示す。 １・・・管路、７・・・治具本体、８・・・ロッド、１
０・・・管路把持子、１１・・・弾性体、１９・・・バ
ンドキロ０Fig. 1 is a cross-sectional view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view showing how the drawing jig is used, Fig. 6 is an explanatory diagram of a method of bundling pipes, and Fig. 4 is a pipe pipe using a band. An explanatory diagram of the conduit bundling position, Fig. 5 is an explanatory diagram of the conventional conduit lead-in construction method, and Fig. 6 is an explanatory diagram of the conduit lead-in construction method.
A sectional view taken along line A-A in the figure is shown. 1... Pipeline, 7... Jig body, 8... Rod, 1
0... Pipe gripper, 11... Elastic body, 19... Band km 0

Claims (1)

【特許請求の範囲】[Claims] 管路を３本ずつの一単位で３角形状になるよう各単位が
互いに結ばれるよう順次結束してゆき、最後に全体の外
周を更に結束し、かつこれら管路の中の１本の管路にロ
ッドを挿通して該ロッドの一端と、他の管路中の所要本
の管路内に挿入され拡径して管路を把持する弾性体を有
する管路把持子の一端とを上記全管路の先端部に被せた
椀形の治具本体に取り付け、該治具本体をけん引するこ
とにより上記管路群をトンネル内に引込むようにするこ
とを特徴とする管路引込工法。The pipes are sequentially tied together so that each unit of three pipes is connected to each other in a triangular shape.Finally, the outer periphery of the whole pipe is further tied together, and one of these pipes is tied together. A rod is inserted into the channel, and one end of the rod is inserted into a required pipe in another pipe, and one end of the pipe gripper has an elastic body that expands in diameter and grips the pipe. A conduit drawing method characterized in that the group of conduits is drawn into a tunnel by being attached to a bowl-shaped jig body placed over the tips of all conduits and pulling the jig body.