JPH05149084A - Method of drawing buried pipe into ground and device for drawing buried pipe into ground used the method - Google Patents

Method of drawing buried pipe into ground and device for drawing buried pipe into ground used the method

Info

Publication number
JPH05149084A
JPH05149084A JP31033291A JP31033291A JPH05149084A JP H05149084 A JPH05149084 A JP H05149084A JP 31033291 A JP31033291 A JP 31033291A JP 31033291 A JP31033291 A JP 31033291A JP H05149084 A JPH05149084 A JP H05149084A
Authority
JP
Japan
Prior art keywords
pipe
ground
buried pipe
underground
reamer
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
JP31033291A
Other languages
Japanese (ja)
Inventor
Teruo Kabeuchi
輝夫 壁内
Katsuhiko Mukono
勝彦 向野
Takashi Oshima
高 大島
Masaya Hattori
正也 服部
Kazunori Tsujimoto
和則 辻本
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP31033291A priority Critical patent/JPH05149084A/en
Publication of JPH05149084A publication Critical patent/JPH05149084A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent the settlement of ground after the execution to promote safety after the execution, to prevent a buried pipe from dirt to make unnecessary cleaning work, etc., of the inside of the buried pipe and to promote work efficiency. CONSTITUTION:A widening reamer 15 for widening a diameter of an underground hole is connected to the front end side of a driving pipe inserted into the ground while excavating the ground. After a buried pipe 11 is connected to the widening reamer 15, when the driving pipe is pulled back to bury the buried pipe 11 into the underground hole, the inside diameter of the underground hole is widened while excavating it by the widening reamer 15. In addition, guide members used in the case the underground hole is excavated and excavated earth 16 are removed to the outside of the ground. The removal of the guide members and the excavated earth 16 to the outside of the ground is made through the space the inside of the buried pipe 11 while absorbing them.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、掘削しながら地中内に
挿通させた推進管の先端側に、前記推進管によって形成
された地中穴を拡径するための拡大リーマを連結し、前
記拡大リーマに埋設管を連結した後、前記推進管を引き
戻して前記地中穴に前記埋設管を埋設していく際に、前
記拡大リーマで前記地中穴内面を掘削しながら拡径する
とともに、前記地中穴掘削時に使用する滑材と掘削排土
とを地中外に排出する埋設管の地中引き込み方法及びそ
の方法に使用する埋設管の地中引き込み装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects an expansion reamer for expanding the diameter of an underground hole formed by the propulsion pipe to the tip end side of the propulsion pipe inserted into the ground while excavating, After connecting the buried pipe to the expansion reamer and pulling back the propulsion pipe to bury the buried pipe in the underground hole, the expansion reamer expands the diameter while excavating the inner surface of the underground hole. The present invention relates to a method for pulling a buried pipe into the ground for discharging a lubricant used for excavating the underground hole and excavated soil to the outside of the ground, and an underground pulling apparatus for the buried pipe used in the method.

【0002】[0002]

【従来の技術】従来、上記のような埋設管の地中引き込
み方法では、前記滑材と排土とを、埋設管の外周面と地
中穴の内壁との間の空間を通して地中外へ排出してい
た。
2. Description of the Related Art Conventionally, in the above-mentioned underground pipe pulling method, the lubricant and the soil are discharged to the outside of the ground through the space between the outer peripheral surface of the buried pipe and the inner wall of the underground hole. Was.

【0003】[0003]

【発明が解決しようとする課題】しかしながら上記の方
法によれば、前記滑材と排土とを円滑に排出できるよう
にするには、地中穴の径を埋設管の径よりもかなり大き
めに形成しなければならず、そのように形成した場合、
埋設管を地中に埋設した状態で、埋設管の外周面と地中
穴の内壁との間に大きな空間ができて、後で地盤が沈下
する危険性があった。本発明は上記従来の欠点を解消
し、施工後の地盤沈下の危険性を防止できる埋設管の地
中引き込み方法及びそれに使用する引き込み装置を提供
することを目的とする。
However, according to the above method, in order to smoothly discharge the lubricant and soil, the diameter of the underground hole should be considerably larger than the diameter of the buried pipe. Must be formed, and if so formed,
With the buried pipe buried in the ground, a large space was created between the outer peripheral surface of the buried pipe and the inner wall of the underground hole, and there was a risk that the ground would sink later. An object of the present invention is to provide a method for retracting a buried pipe into the ground and a retracting device used for the method, which solves the above-mentioned conventional drawbacks and can prevent the risk of ground subsidence after construction.

【0004】[0004]

【課題を解決するための手段】上記の目的を達成するた
めに、本発明にかかる埋設管の地中引き込み方法は、滑
材と掘削排土との地中外への排出を、埋設管内の空間を
通して吸引しながら行うことを特徴とし、また、埋設管
の地中引き込み装置は、推進管に連結自在な拡大リーマ
を設け、前記拡大リーマに連結する埋設管連結具を設
け、前記埋設管内に挿通可能で、滑材と掘削排土とを排
出するための排出管を設け、前記排出管を前記埋設管内
に挿通させた状態で、前記拡大リーマによって拡径した
空間と連通するように前記埋設管連結具に前記排出管の
一端部を連結し、前記排出管の他端部に、前記滑材と前
記掘削排土とを吸引するための吸引装置を連結してある
ことを特徴とし、その作用効果は次の通りである。
In order to achieve the above-mentioned object, a method of pulling a buried pipe into the ground according to the present invention is a method of discharging a lubricant and excavated soil to the outside of the ground by a space inside the buried pipe. The underground retraction device for the buried pipe is provided with an expansion reamer that can be connected to the propulsion pipe, and a buried pipe connector that is connected to the expansion reamer is provided and inserted into the buried pipe. It is possible to provide a discharge pipe for discharging the lubricant and excavated soil, and in a state where the discharge pipe is inserted into the buried pipe, the buried pipe is communicated with the space expanded by the expansion reamer. One end of the discharge pipe is connected to a connector, and a suction device for sucking the lubricant and the excavated soil is connected to the other end of the discharge pipe. The effects are as follows.

【0005】[0005]

【作用】つまり、滑材と掘削排土との地中外への排出
を、埋設管内の空間を通して吸引しながら行うから、地
中穴の径を埋設管の径とほぼ同径にできて、埋設管を地
中に埋設した後に、埋設管の外周面と地中穴の内壁との
間に空間が生じにくくなり、施工後の地盤沈下を防止す
ることができるようになる。また、埋設管地中引き込み
装置においては、滑材と掘削排土とを排出するための排
出管を埋設管内に挿通させるとともに、拡大リーマによ
って拡径した空間と前記排出管内の空間とを連通させて
おき、滑材と掘削排土との地中外への排出を、その排出
管を通して吸引しながら行うから、滑材や掘削排土が埋
設管内に侵入しにくくなって埋設管の内部の汚れを防止
できる。
In other words, since the lubricant and the excavated soil are discharged to the outside of the ground while sucking through the space inside the buried pipe, the diameter of the underground hole can be made almost the same as the diameter of the buried pipe. After the pipe is buried in the ground, a space is less likely to be formed between the outer peripheral surface of the buried pipe and the inner wall of the underground hole, and the ground subsidence after construction can be prevented. Further, in the buried pipe underground pulling device, a discharge pipe for discharging the lubricant and excavated soil is inserted into the buried pipe, and the space expanded by the expansion reamer and the space inside the discharge pipe are communicated with each other. In addition, since the lubricant and the excavated soil are discharged to the outside of the ground while suctioning through the discharge pipe, the lubricant and the excavated soil are unlikely to enter the buried pipe, and the dirt inside the buried pipe is prevented. It can be prevented.

【0006】[0006]

【発明の効果】従って、施工後の地盤沈下を防止するこ
とができるから施工後における安全性に優れ、また、埋
設管の汚れを防止できるから埋設管内の清掃作業等が不
要となって作業性がよい埋設管の地中引き込み方法及び
その方法に使用する埋設管の地中引き込み装置を提供す
ることができた。
As a result, it is possible to prevent the ground subsidence after the construction, so that the safety after the construction is excellent, and because the buried pipe can be prevented from being soiled, the cleaning work inside the buried pipe becomes unnecessary and the workability is improved. It was possible to provide an underground pipe pulling method for a buried pipe and a buried pipe pulling device used for the method.

【0007】[0007]

【実施例】次に、本発明の実施例を図面に基づいて説明
する。図4に、埋設用管の地中引き込み設備1と推進工
法用の推進装置2とを示してある。
Embodiments of the present invention will now be described with reference to the drawings. FIG. 4 shows an underground pipe drawing facility 1 for a buried pipe and a propulsion device 2 for a propulsion method.

【0008】前記推進装置2においては、第1施工ピッ
トA及び第2施工ピットB間の土中を推進していく掘削
ヘッド(図示せず)を備えた掘削管3と、この掘削管3
に後続する複数の推進管4とを、継手部(図外)を介し
て屈曲自在に予め連結して推進ユニット5を構成してあ
る。この推進ユニット5は、掘削ヘッドによって形成さ
れた地中穴50内にあり、この状態から、推進装置2側
の第1施工ピットAの地上部外方に設置した推進ユニッ
ト巻装用ドラム6で巻き取るようにしてある。
In the propulsion device 2, an excavation pipe 3 equipped with an excavation head (not shown) for propelling in the soil between the first construction pit A and the second construction pit B, and the excavation pipe 3
A plurality of propulsion pipes 4 subsequent to the above are flexibly connected in advance via a joint (not shown) to form a propulsion unit 5. The propulsion unit 5 is located in the underground hole 50 formed by the excavation head, and from this state, the propulsion unit winding drum 6 installed outside the ground portion of the first construction pit A on the propulsion device 2 side. I take it.

【0009】前記第1施工ピットAの底部には、クラン
パ7aと押圧シリンダ7bとの組合せからなる押圧機構
7を設置してある。この押圧機構7へは、前記推進ユニ
ット巻装用ドラム6から巻き戻した推進ユニット5を、
ガイドローラー8経由で供給するようになっている。そ
して、この押圧機構7は、推進ユニット5をクランパ7
aにてクランプしつつ押圧シリンダ7bを前進作動させ
ることで、推進ユニット5を前進作動させ、また、クラ
ンパ7aを解除したまま押圧シリンダ7bを後進作動さ
せることで、推進ユニット5の新たな部分のクランプの
準備を行わせ、この繰り返しによって、前記推進ユニッ
ト5の推進のための後方からの押圧を行うようになって
いる。なお、図中9は、施工ピットAの側壁を内側から
支持する支持ジャッキである。
At the bottom of the first construction pit A, a pressing mechanism 7 composed of a combination of a clamper 7a and a pressing cylinder 7b is installed. To the pressing mechanism 7, the propulsion unit 5 rewound from the propulsion unit winding drum 6 is
It is designed to be supplied via the guide roller 8. The pressing mechanism 7 connects the propulsion unit 5 to the clamper 7
By pushing forward the pushing cylinder 7b while clamping it at a, the pushing unit 5 is pushed forward, and by pushing the pushing cylinder 7b backward while releasing the clamper 7a, a new portion of the pushing unit 5 The clamp is prepared, and by repeating this, the pushing from the rear for propelling the propulsion unit 5 is performed. In addition, 9 is a support jack which supports the side wall of the construction pit A from the inside.

【0010】前記引き込み設備1側の第2施工ピットB
の地上外方には、埋設管巻装用ドラム10を設置してあ
る。そして、この埋設管巻装用ドラム10には、埋設管
としてのコルゲート管11を巻き取ってある。
The second construction pit B on the side of the lead-in facility 1
A buried pipe winding drum 10 is installed outside the ground. A corrugated pipe 11 as an embedded pipe is wound around the embedded pipe winding drum 10.

【0011】前記第2施工ピットBの入口にはガイドロ
ーラー12を設けてあり、前記埋設管巻装用ドラム10
から巻き戻すコルゲート管11は、このガイドローラー
12により、第2施工ピットB内へ案内するようになっ
ている。このコルゲート管11は、後述するように、第
1施工ピットAから第2施工ピットB側へ貫通した推進
ユニット5側に地中引き込み装置13を介して連結して
あり、押圧機構7を逆作動させることによって、土中か
ら引き抜かれる推進ユニット5に替わって土中に引き込
まれるようになっている。
A guide roller 12 is provided at the entrance of the second construction pit B, and the buried pipe winding drum 10 is provided.
The corrugated pipe 11 that is unwound from the inside is guided by the guide roller 12 into the second construction pit B. As will be described later, the corrugated pipe 11 is connected to the propulsion unit 5 side penetrating from the first construction pit A to the second construction pit B side via the underground retraction device 13 to reversely operate the pressing mechanism 7. By doing so, instead of the propulsion unit 5 being pulled out from the soil, it is drawn into the soil.

【0012】図1に示すように、前記推進ユニット5の
先端部の掘削管3からは、駆動回転可能な駆動軸14が
延出しており、この駆動軸14に掘削ヘッド取り付け部
を設けてある。本実施例においては掘削ヘッドを取り外
して、そこに埋設管の地中引き込み装置13の一端部を
連結してある。地中引き込み装置13の他端部はコルゲ
ート管11に連結してある。
As shown in FIG. 1, a drive shaft 14 which can be driven and rotated extends from the excavation pipe 3 at the tip of the propulsion unit 5, and an excavation head mounting portion is provided on the drive shaft 14. .. In this embodiment, the excavation head is removed, and one end of the underground drawing device 13 of the buried pipe is connected thereto. The other end of the underground retractor 13 is connected to the corrugated pipe 11.

【0013】図1、図4に示すように、前記地中引き込
み装置13を構成するに、掘削ヘッドによって形成され
た地中穴50を拡径するための拡大リーマ15と、掘削
排土16及び掘削時に使用する滑材を排出するための排
出管17とを、埋設管連結具18の両端部にそれぞれ連
結するとともに、排出管17の一方の端部に、掘削排土
16及び滑材を吸引するための吸引装置19を連結して
ある。
As shown in FIGS. 1 and 4, in the construction of the underground pulling device 13, an expansion reamer 15 for expanding the diameter of the underground hole 50 formed by the excavation head, excavation soil 16 and A discharge pipe 17 for discharging the lubricant used during excavation is connected to both ends of the buried pipe connector 18, and one end of the discharge pipe 17 sucks the excavated soil 16 and the lubricant. A suction device 19 for connecting is connected.

【0014】図1、図2に示すように、前記拡大リーマ
15は、円筒状のリーマ本体部20に、周方向(つま
り、地中穴50の周方向)に4箇所、等間隔に掘削部2
1を設けて構成してある。
As shown in FIGS. 1 and 2, the enlarged reamer 15 is provided on the cylindrical reamer body 20 at four locations in the circumferential direction (that is, the circumferential direction of the underground hole 50) at equal intervals. Two
1 is provided.

【0015】この掘削部21は、リーマ本体部20の径
方向に突設してあり、すべての掘削部21の先端部を一
つのリング24の内面に溶接固定して、掘削部21の強
度を確保してある。それぞれの掘削部21には、複数の
掘削刃21Aを前記径方向(つまり、地中穴50の径方
向)に向けて一定間隔で並設してある。
The excavation portion 21 is provided so as to project in the radial direction of the reamer main body portion 20, and the tips of all the excavation portions 21 are welded and fixed to the inner surface of one ring 24 so that the strength of the excavation portion 21 is increased. It has been secured. In each excavation part 21, a plurality of excavation blades 21A are arranged in parallel in the radial direction (that is, the radial direction of the underground hole 50) at regular intervals.

【0016】前記リーマ本体部20には、駆動軸14の
嵌入穴22と、駆動軸14に対する取り付け用穴23と
を、軸芯に沿って貫通形成してあり、リーマ本体部20
の外周部の一端部は、掘削管3の端部に内嵌自在に形成
してある。
The reamer body 20 has a fitting hole 22 for the drive shaft 14 and a mounting hole 23 for the drive shaft 14 formed through the reamer body 20.
One end of the outer peripheral portion is formed so as to be fitted inside the end of the excavation pipe 3.

【0017】また、互いに隣接する掘削部21間で地中
穴50の長手方向には、掘削排土16と、掘削時に使用
する滑材とを排出させるための排出用空間49を貫通し
た状態で形成してある。
Further, in a longitudinal direction of the underground hole 50 between the adjacent excavating portions 21, the excavating soil 16 and the discharging space 49 for discharging the lubricant used at the time of excavating are penetrated. Has been formed.

【0018】前記排出管17は塩化ビニル製で、コルゲ
ート管11内に挿通可能にしてある。
The discharge pipe 17 is made of vinyl chloride and can be inserted into the corrugated pipe 11.

【0019】前記埋設管連結具18はコルゲート管11
内に挿入自在で、挿入した状態でコルゲート管11の内
壁との間に一定の空間ができるように形成してあり、駆
動軸14に連結自在なシャフト25と、リング状の連結
具本体26と、排出管17を取り付けるためのブラケッ
ト27と、コルゲート管11に、その周方向3箇所でそ
れぞれ係止する3個の係止金具28とからなる。
The buried pipe connector 18 is a corrugated pipe 11
A shaft 25 that is insertable into the inside of the corrugated tube 11 and is formed so as to have a certain space between the inner wall of the corrugated tube 11 and the drive shaft 14, and a ring-shaped connector body 26. A bracket 27 for attaching the discharge pipe 17 and three locking metal fittings 28 that lock the corrugated pipe 11 at three circumferential positions thereof.

【0020】前記シャフト25は、両端部を小径に形成
して、その小径部にそれぞれ第1、第2オネジ部29、
30を形成してある。また、前記連結具本体26には、
軸芯に沿ってシャフト挿通用穴31とベアリング嵌入穴
32とを貫通形成してある。そして、シャフト25の一
方側の小径部を、シャフト挿通用穴31側からベアリン
グ嵌入穴32にわたって挿通させるとともに、ベアリン
グ嵌入穴32にベアリング33を嵌入した状態で、前記
シャフト25の小径部にベアリング33を外嵌し、ベア
リング33から突出している第1オネジ部29にベアリ
ング固定用ナット34を螺合して、シャフト25を連結
具本体26に、その軸芯方向に相対回転自在に取り付け
てある。
Both ends of the shaft 25 are formed to have a small diameter, and the first and second male screw portions 29, 29 are formed in the small diameter portion, respectively.
30 is formed. In addition, the connector body 26,
A shaft insertion hole 31 and a bearing fitting hole 32 are formed so as to penetrate along the axis. Then, the small-diameter portion on one side of the shaft 25 is inserted from the shaft insertion hole 31 side to the bearing fitting hole 32, and the bearing 33 is fitted in the bearing fitting hole 32 in the state where the bearing 33 is fitted in the bearing fitting hole 32. Is externally fitted, and the bearing fixing nut 34 is screwed into the first male screw portion 29 protruding from the bearing 33, so that the shaft 25 is attached to the connector main body 26 so as to be relatively rotatable in the axial direction thereof.

【0021】前記ブラケット27は、連結具本体26へ
の取り付け用円板35に、パイプ36を溶接固定したも
のからなり、パイプ36の周壁には、周方向で3箇所、
パイプ36内外の空間を連通させるための開口部37を
大きく形成してある。このブラケット27は、連結具本
体26へは、リング状のベアリング押え38を介してボ
ルト連結してある。
The bracket 27 is formed by welding and fixing a pipe 36 to a disc 35 for attachment to the connector body 26, and the peripheral wall of the pipe 36 has three locations in the circumferential direction.
An opening 37 for communicating the space inside and outside the pipe 36 is formed large. The bracket 27 is bolted to the connector body 26 via a ring-shaped bearing retainer 38.

【0022】図1、図3に示すように、前記係止金具2
8は円弧状に形成して、連結具本体26にそれぞれボル
ト固定してある。円弧状部分は、コルゲート管11の1
/4円部に係止できる大きさに形成してある。なお、連
結具本体26に取り付けるための取り付け穴39は円板
35の径方向に長孔に形成してあり、コルゲート管11
に挿入した後に係止金具28を前記径方向に突出移動さ
せて、コルゲート管11の内面の凸部に係止させること
ができるようにしてある。
As shown in FIGS. 1 and 3, the locking metal fitting 2 is provided.
Reference numeral 8 is formed in an arc shape and is bolted to the connector body 26. The arc-shaped portion is 1 of the corrugated pipe 11.
It is formed so that it can be locked in the / 4 circle. The mounting hole 39 for mounting to the connector main body 26 is formed as a long hole in the radial direction of the disc 35, and the corrugated pipe 11
After being inserted into the corrugated tube 11, the locking fitting 28 can be projected and moved in the radial direction so as to be locked to the convex portion on the inner surface of the corrugated tube 11.

【0023】前記地中引き込み装置13は、推進ユニッ
ト5とコルゲート管11とに、次のようにして連結して
ある。
The underground pulling device 13 is connected to the propulsion unit 5 and the corrugated pipe 11 as follows.

【0024】つまり、拡大リーマ本体部20を駆動軸1
4に外嵌させるとともに、その本体部20の外周部を掘
削管3の端部に内嵌した状態にし、駆動軸14に形成し
たメネジ部40にシャフト25の第2オネジ部30を螺
合させてシャフト25の段部で拡大リーマ15を押し付
けて推進ユニット5側に連結してあり、他方、連結具1
8をコルゲート管11に挿入させ、係止金具28をコル
ゲート管11の内面凸部に係止させて、コルゲート管1
1に連結してある。
That is, the enlarged reamer body 20 is connected to the drive shaft 1
4, while fitting the outer peripheral portion of the main body portion 20 into the end portion of the excavation pipe 3, the second male screw portion 30 of the shaft 25 is screwed to the female screw portion 40 formed on the drive shaft 14. The expansion reamer 15 is pressed at the step portion of the shaft 25 to be connected to the propulsion unit 5 side, while the connecting tool 1
8 is inserted into the corrugated tube 11, and the locking metal fitting 28 is locked to the inner convex portion of the corrugated tube 11,
It is connected to 1.

【0025】なお、シャフト25には、第2オネジ部3
0に隣接させて、大径部分に第3オネジ部41を形成し
てあり、その第3オネジ部41にナット42を螺合させ
てリーマ本体部20に接当させ、ナット42からリーマ
本体部20にわたってピン43を挿通し、もって、拡大
リーマ15とシャフト25とが一体回転するようにして
ある。
The shaft 25 has a second male screw portion 3
The third male screw portion 41 is formed on the large diameter portion so as to be adjacent to 0, and the nut 42 is screwed onto the third male screw portion 41 to abut against the reamer body portion 20. The pin 43 is inserted through 20 so that the expansion reamer 15 and the shaft 25 rotate integrally.

【0026】また、駆動軸14からシャフト25にわた
って、掘削時に使用する滑材の流路51を形成してあ
り、シャフト25の外周部から拡大リーマ15の刃部2
1に向けて滑材を噴射するようにしてある。
Further, a flow path 51 of a lubricant used during excavation is formed from the drive shaft 14 to the shaft 25, and the blade portion 2 of the enlarged reamer 15 is extended from the outer peripheral portion of the shaft 25.
The lubricant is sprayed toward No. 1.

【0027】ブラケット27には排出管17を内嵌する
とともに、連結具18とコルゲート管11の内壁との間
に形成される空間を、それよりもコルゲート管内方側の
空間から仕切るためのカバー44を外嵌して、前記排出
管17と一体にボルト連結してある。この状態で、拡大
リーマ15によって拡径した空間は、排出管17内の空
間に、ブラケット27の開口部37を介して連通してい
る。前記排出管17の他端部には吸引装置19を連結し
てある。
A cover 44 for fitting the discharge pipe 17 into the bracket 27 and for partitioning the space formed between the connector 18 and the inner wall of the corrugated pipe 11 from the space on the inner side of the corrugated pipe. Is externally fitted and bolted integrally with the discharge pipe 17. In this state, the space expanded by the expansion reamer 15 communicates with the space inside the discharge pipe 17 through the opening 37 of the bracket 27. A suction device 19 is connected to the other end of the discharge pipe 17.

【0028】上記のように連結した後、駆動軸14を駆
動させて拡大リーマ15を回転させながら推進ユニット
5を土中から引き抜いていき、それとともに、吸引装置
19を作動させると、掘削排土16と滑材とは、コルゲ
ート管11の端部に入り込み、各係止金具28の間を通
過して、開口部37から排出管17内に導かれ、この排
出管17を通って地中外に排出される。
After connecting as described above, the propulsion unit 5 is pulled out from the soil while driving the drive shaft 14 to rotate the expansion reamer 15, and at the same time, when the suction device 19 is operated, the excavated soil is discharged. 16 and the lubricant enter the end portion of the corrugated pipe 11, pass between the locking metal fittings 28, are guided into the discharge pipe 17 through the opening 37, and pass through the discharge pipe 17 to the outside of the ground. Is discharged.

【0029】〔別実施例〕前記埋設管11は、コルゲー
ト管以外の管であってもよい。前記拡大リーマは、上記
実施例のように刃部21を、放射状に設けたものに限ら
れず、例えば円錐状の拡大リーマ本体部に、螺旋状に掘
削部21を形成したものであってもよい。
[Other Embodiments] The buried pipe 11 may be a pipe other than a corrugated pipe. The expansion reamer is not limited to the one in which the blade portions 21 are provided radially as in the above-described embodiment, but may be, for example, a conical expansion reamer main body portion with the excavation portion 21 formed in a spiral shape. ..

【0030】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。
It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

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

【図1】埋設管の地中引き込み装置の縦断面図FIG. 1 is a vertical sectional view of an underground pipe retraction device for a buried pipe.

【図2】拡大リーマの正面図[Fig. 2] Front view of an enlarged reamer

【図3】係止金具の取付状態を示す図FIG. 3 is a view showing a mounting state of a locking metal fitting.

【図4】地中引き込み設備と推進装置との全体図[Fig. 4] Overall view of underground pull-in facility and propulsion device

【符号の説明】[Explanation of symbols]

4 推進管 11 埋設管 15 拡大リーマ 16 掘削排土 17 排出管 18 埋設管連結具 19 吸引装置 50 地中穴 4 Propulsion pipe 11 Buried pipe 15 Enlarged reamer 16 Excavation and soil discharge 17 Discharge pipe 18 Buried pipe connector 19 Suction device 50 Underground hole

───────────────────────────────────────────────────── フロントページの続き (72)発明者 服部 正也 兵庫県尼崎市浜1丁目1番1号 株式会社 クボタ技術開発研究所内 (72)発明者 辻本 和則 兵庫県尼崎市浜1丁目1番1号 株式会社 クボタ技術開発研究所内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masaya Hattori 1-1-1, Hama, Amagasaki City, Hyogo Prefecture Kubota Technology Development Laboratory Co., Ltd. (72) Inventor Kazunori Tsujimoto 1-1-1, Amamasaki City, Hyogo Stock Company Kubota Technology Development Laboratory

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 掘削しながら地中内に挿通させた推進管
(4)の先端側に、前記推進管(4)によって形成され
た地中穴(50)を拡径するための拡大リーマ(15)
を連結し、前記拡大リーマ(15)に埋設管(11)を
連結した後、前記推進管(4)を引き戻して前記地中穴
(50)に前記埋設管(11)を埋設していく際に、前
記拡大リーマ(15)で前記地中穴(50)内面を掘削
しながら拡径するとともに、前記地中穴(50)掘削時
に使用する滑材と掘削排土(16)とを地中外に排出す
る埋設管の地中引き込み方法であって、前記滑材と前記
掘削排土(16)との地中外への排出を、前記埋設管
(11)内の空間を通して吸引しながら行う埋設管の地
中引き込み方法。
1. An expansion reamer for expanding the diameter of an underground hole (50) formed by the propulsion pipe (4) at the tip side of the propulsion pipe (4) which is inserted into the ground while excavating. 15)
When the buried pipe (11) is connected to the expansion reamer (15) and then the propulsion pipe (4) is pulled back to bury the buried pipe (11) in the underground hole (50). In addition, the diameter of the inner hole (50) is increased while excavating the inner surface of the underground hole (50) with the expansion reamer (15), and the lubricant and the excavated soil (16) used when excavating the underground hole (50) are excavated outside the ground. A method of pulling a buried pipe into a ground, wherein the lubricant and the excavated soil (16) are discharged to the outside of the ground while suctioning through a space inside the buried pipe (11). How to pull into the ground.
【請求項2】 請求項1記載の埋設管の地中引き込み方
法に使用する埋設管の地中引き込み装置であって、 前記推進管(4)に連結自在な拡大リーマ(15)を設
け、前記拡大リーマ(15)に連結する埋設管連結具
(18)を設け、前記埋設管(11)内に挿通可能で、
前記滑材と前記掘削排土(16)とを排出するための排
出管(17)を設け、前記排出管(17)を前記埋設管
(11)内に挿通させた状態で、前記拡大リーマ(1
5)によって拡径した空間と連通するように前記埋設管
連結具(18)に前記排出管(17)の一端部を連結
し、前記排出管(17)の他端部に、前記滑材と前記掘
削排土(16)とを吸引するための吸引装置(19)を
連結してある埋設管の地中引き込み装置。
2. An underground pipe retraction device for use in the underground pipe retraction method according to claim 1, further comprising an expandable reamer (15) connectable to the propulsion pipe (4), An embedded pipe connector (18) for connecting to the expansion reamer (15) is provided and can be inserted into the embedded pipe (11),
A discharge pipe (17) for discharging the lubricant and the excavated soil (16) is provided, and the expansion reamer () is inserted in the buried pipe (11). 1
5) One end of the discharge pipe (17) is connected to the buried pipe connector (18) so as to communicate with the space expanded by the diameter 5), and the other end of the discharge pipe (17) is connected to the lubricant. An underground pipe pulling device for a buried pipe, to which a suction device (19) for sucking the excavated soil (16) is connected.
JP31033291A 1991-11-26 1991-11-26 Method of drawing buried pipe into ground and device for drawing buried pipe into ground used the method Pending JPH05149084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31033291A JPH05149084A (en) 1991-11-26 1991-11-26 Method of drawing buried pipe into ground and device for drawing buried pipe into ground used the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31033291A JPH05149084A (en) 1991-11-26 1991-11-26 Method of drawing buried pipe into ground and device for drawing buried pipe into ground used the method

Publications (1)

Publication Number Publication Date
JPH05149084A true JPH05149084A (en) 1993-06-15

Family

ID=18003961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31033291A Pending JPH05149084A (en) 1991-11-26 1991-11-26 Method of drawing buried pipe into ground and device for drawing buried pipe into ground used the method

Country Status (1)

Country Link
JP (1) JPH05149084A (en)

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