JPS62194396A - Renewal of pipe body - Google Patents
Renewal of pipe bodyInfo
- Publication number
- JPS62194396A JPS62194396A JP61033818A JP3381886A JPS62194396A JP S62194396 A JPS62194396 A JP S62194396A JP 61033818 A JP61033818 A JP 61033818A JP 3381886 A JP3381886 A JP 3381886A JP S62194396 A JPS62194396 A JP S62194396A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- excavator
- existing
- existing pipe
- new
- 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
Links
- 238000009412 basement excavation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 description 15
- 238000003756 stirring Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 7
- 239000004576 sand Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 240000001548 Camellia japonica Species 0.000 description 1
- 235000018597 common camellia Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
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〉
本発明は既設管を活かして既設管より大径の管体を布設
する技術に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a technique for making use of existing pipes to install a pipe body having a larger diameter than the existing pipes.
〈従来の技術〉
大都市では下水量の著しい増加や既設管の老朽化に伴い
既設管より大径の新設管を布設する工事が進められてい
る。<Conventional Technology> In large cities, construction work is progressing to install new pipes with a larger diameter than the existing pipes due to a significant increase in the amount of sewage and the aging of existing pipes.
一般に新設管は既設管上は別ルートで布設されることが
普通である。Generally, new pipes are laid over existing pipes by a different route.
布設方法としては開削工法やシールド工法等の各種方法
が利用されている。Various methods are used for laying the cables, such as the cut-and-cover method and the shield method.
〈本発明が解決しようとする問題点〉
上記した従来の新設管の布設方法には次のような問題点
が存在する。<Problems to be Solved by the Present Invention> The conventional new pipe installation method described above has the following problems.
（イ）大都市等では電力線、上・下水道管、ガス管地下
鉄等が縦横に交錯している関係から、新たな布設ルート
を採用することが困難となりつつある。(b) In large cities, it is becoming difficult to adopt new installation routes because power lines, water and sewage pipes, gas pipes, and subway lines intersect in all directions.
また限られた地下スペースに埋設できる管体の数は限定
されるので、別ルートを採用できなくなるのは時間の問
題である。Furthermore, since the number of pipes that can be buried in the limited underground space is limited, it is only a matter of time before another route cannot be taken.
（ロ）別ルートで布設する場合には、まったく新たに掘
削しなければならない。(b) If the cable is to be laid via a different route, a completely new excavation must be made.
そのため、布設費が高くつく。Therefore, installation costs are high.
（ハ）道路の下の不要となった既設管は撤去することが
法定で定められている。(c) It is stipulated by law that existing pipes under roads that are no longer needed be removed.
そのため、新設管の布設費用に撤去費用が加わり美大な
費用がかかる。As a result, the cost of installing new pipes and the cost of removing them add up to an enormous amount of costs.
（ニ）開削工法の場合には、道路や民家が障害となり布
設作業が不可能となる場合が多い。(d) In the case of the cut-and-cut method, roads and private houses often become obstacles, making installation work impossible.
〈本発明の目的〉
本発明は以上のような問題点に鑑みなされたもので、次
のような管体の更新方法を提供することを目的とする。<Object of the present invention> The present invention has been made in view of the above problems, and an object of the present invention is to provide the following method for updating a pipe body.
（イ）限られた地下スペースを有効に活用できる管体の
更新方法。(a) A pipe renewal method that makes effective use of limited underground space.
（ロ）土砂の掘削量をできるだけ少なくして布設できる
管体の更新方法。(b) A method for updating pipes that can be installed while minimizing the amount of earth and sand excavated.
（ハ）老朽化した既設管の撤去が容易な管体の更新方法
。(c) A pipe renewal method that allows easy removal of aging existing pipes.
〈本発明の構成〉
以下、図面を参照しながら本発明の一実施例について説
明する。<Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.
まず、本発明に使用する掘削機について説明する。First, an excavator used in the present invention will be explained.
〈イ〉掘削機の全体の説明 第１．２図に掘削機１の全体図を示す。<B> Overall explanation of the excavator Figure 1.2 shows an overall view of the excavator 1.
１１はビット、１２は排土スクリュー、１３は回転モー
タ、１４は撹拌槽、１５は方向修正用ジヤツキ、１６は
圧送ポンプである。11 is a bit, 12 is an earth removal screw, 13 is a rotary motor, 14 is a stirring tank, 15 is a direction correction jack, and 16 is a pressure pump.
この掘削機１は、両端開放形の筒状体に形成され、そし
て既設管Ａに外装して既設管Ａをガイド材として掘進す
る構造の掘削機である。This excavator 1 is an excavator that is formed into a cylindrical body with both ends open, and that is attached to an existing pipe A and excavates using the existing pipe A as a guide material.
〈口〉掘削部
中空ロッド１７の周面にはスパイラル状に排土スクリュ
ー１２を植設し、排土スクリュー１２の先端にはビット
１１を設ける。<Mouth> An earth removal screw 12 is installed in a spiral shape on the circumferential surface of the excavation part hollow rod 17, and a bit 11 is provided at the tip of the earth removal screw 12.
さらに中空ロッド１７の尾端外周にはリング状にギア１
８を設け、掘削機１の筒体側に固定した回転モータ１３
の回転力を受けて回転できるよう構成する。Furthermore, a ring-shaped gear 1 is provided on the outer circumference of the tail end of the hollow rod 17.
8 and fixed to the cylindrical body side of the excavator 1.
The structure is such that it can rotate in response to the rotational force of.
〈ハ〉排上部
中空ロッド１７の後端側には、排土スクリュー１２で移
送した土砂を投入して流動化するための撹拌槽１４を設
ける。<C> A stirring tank 14 is provided at the rear end side of the discharge upper hollow rod 17 for charging and fluidizing the soil transferred by the soil discharge screw 12.
この撹拌槽１４は、第１．２図に示すように既設管Ａを
包囲できる湾曲形の貯槽であり、掘削機１の下半に位置
させる。The stirring tank 14 is a curved storage tank that can surround the existing pipe A, as shown in FIG. 1.2, and is located in the lower half of the excavator 1.
また、撹拌槽１４内には補給水パイプ２を案内する。Further, a make-up water pipe 2 is guided into the stirring tank 14.
撹拌槽１４の底部には排水パイプ３を接続し、また排水
パイプ３の途上には圧送ポンプ１６を介在して撹拌槽１
４内の泥水を外部に排出できるよう構成する。A drainage pipe 3 is connected to the bottom of the stirring tank 14, and a pressure pump 16 is interposed in the middle of the drainage pipe 3 to connect the stirring tank 1.
Constructed so that muddy water inside 4 can be discharged to the outside.
また、撹拌槽１４内には、槽内を撹拌できるような公知
の撹拌装置を配置する場合ｔ）ある。In addition, there is a case (t) in which a known stirring device capable of stirring the inside of the tank is disposed in the stirring tank 14.
〈二〉掘進方向の修正部
掘削機１の筒体の内壁には円周方向に複数の方向修正用
ジヤツキ１５を設ける。<2> Excavation Direction Correction Section A plurality of direction correction jacks 15 are provided on the inner wall of the cylindrical body of the excavator 1 in the circumferential direction.
この方向修正用ジヤツキ１５は新設管Ｂの端面から反力
を得て、掘削機１の掘進方向を修正する目的のジヤツキ
である。This direction correction jack 15 is a jack for the purpose of correcting the excavation direction of the excavator 1 by obtaining a reaction force from the end face of the newly installed pipe B.
くホ〉既設管との係合手段
掘削機ｌの筒体の内壁には円周方向にガイドローラ４を
複数取り付ける。Kuho> Means for engaging with the existing pipe A plurality of guide rollers 4 are attached to the inner wall of the cylindrical body of the excavator 1 in the circumferential direction.
このガイドローラ４は、掘削機１の軸心を既設管Ａの軸
心に一致させた状態で既設管Ａ上を走行するローラであ
り、ブラケット４１を介して取り付ける。The guide roller 4 is a roller that runs on the existing pipe A with the axis of the excavator 1 aligned with the axis of the existing pipe A, and is attached via a bracket 41.
なお、ガイドローラ４を新設管Ｂの内壁に取り付けるこ
とも可能である。Note that it is also possible to attach the guide rollers 4 to the inner wall of the newly installed pipe B.
次に管体の更新方法について説明する。Next, a method for updating the tube will be explained.
（１）掘削機の設置（第４図） 既設管Ａの直上に発進竪坑５を開設する。(1) Installation of excavator (Figure 4) Launch shaft 5 will be opened directly above the existing pipe A.
発進竪坑５内の反力壁には推進用ジヤツキ６を取り付け
る。A propulsion jack 6 is attached to the reaction wall in the starting shaft 5.
次に発進竪坑５内に掘削機１を吊り込み、既設管Ａに外
装させた状態で据え付ける。Next, the excavator 1 is suspended into the starting shaft 5 and installed in a state where it is covered with the existing pipe A.
掘削機１を既設管Ａに外装させた状態でセットするには
次の２つの方法が考えられる。The following two methods can be considered for setting the excavator 1 in a state where it is sheathed on the existing pipe A.
まずその１つは、発進竪坑５内に露出している既設管Ａ
を撤去した後に掘削機１を吊り込んでセットする方法で
ある。First of all, the existing pipe A exposed in the starting shaft 5
This is a method in which the excavator 1 is hung and set after the excavator 1 is removed.
もう１つの方法は、掘削機１を組み立て式に構成し、既
設管Ａを撤去しないかわりに発進竪坑５内で掘削機１を
組み立てる方法である。Another method is to construct the excavator 1 in an assembled manner and assemble the excavator 1 in the starting shaft 5 instead of removing the existing pipe A.
なお、本実施例では既設管Ａを撤去して掘削機１をセッ
トする場合について説明する。In this embodiment, a case will be described in which the existing pipe A is removed and the excavator 1 is set.
（２）掘削開始（第５図） 掘削機１を作動して掘削を開始する。(2) Start of excavation (Figure 5) Excavator 1 is operated to start excavation.
既設管Ａを外装して配置した掘椿機１は、既設酌
管Ａの外周の土砂を掘削しながら、推進用ジヤツキ６の
推進力を受けて前進する。The camellia excavator 1, which is arranged with the existing pipe A as its exterior, moves forward under the propulsion force of the propulsion jack 6 while excavating earth and sand around the outer circumference of the existing pipe A.
掘削ａ１が前進する際、掘削機１はガイドローラ４を介
して既設管Ａの外周に案内されながら、既設管Ａの軸心
に沿って前進する。When the excavator a1 moves forward, the excavator 1 moves forward along the axis of the existing pipe A while being guided by the outer periphery of the existing pipe A via the guide rollers 4.
掘削機１は、布設予定の新設管Ｂの断面の全域を掘削す
る必要はなく、既設管への外径と新設管Ｂの外径との間
に存在する土砂のみの掘削で済む。The excavator 1 does not need to excavate the entire area of the cross section of the new pipe B to be laid, and only needs to excavate the earth and sand that exists between the outer diameter of the existing pipe and the outer diameter of the new pipe B.
掘削した土砂は撹拌槽１４内に投入して泥水化されて外
部に排出される。The excavated earth and sand is put into the stirring tank 14, turned into muddy water, and discharged to the outside.
（３）新設管の吊り込み、推進
掘削機１が所定の距離だけ掘進したら、推進用ジヤツキ
６を収縮させた後、発進竪坑５内に既設管Ａの外径より
大径の内径を有する新設管Ｂを吊り込む。(3) Suspending the new pipe. When the propulsion excavator 1 has dug a predetermined distance, the propulsion jack 6 is contracted, and a new pipe with an inner diameter larger than the outer diameter of the existing pipe A is installed in the starting shaft 5. Suspend tube B.
次に掘削機１の尾端に新設管Ｂを接続し、推進用ジヤツ
キ６で新設管Ｂの尾端を推進して掘削作業を継続して行
う。Next, the newly installed pipe B is connected to the tail end of the excavator 1, and the tail end of the newly installed pipe B is propelled by the propulsion jack 6 to continue the excavation work.
以下同様に接続用の新設管Ｂを順次接続しながら新設管
Ｂの敷設距離を延長していく。Thereafter, the installation distance of the new pipe B is extended by sequentially connecting the new pipe B for connection in the same manner.
（４）既設管の撤去（第６図）
新設管Ｂ内に位置する既設管Ａは不要となるから、新設
管Ｂの延長作業と並行して、既設管Ａを発進竪坑５側か
ら順次撤去していく。(4) Removal of existing pipes (Fig. 6) Since the existing pipe A located inside the new pipe B is no longer needed, the existing pipe A is sequentially removed from the starting shaft 5 side in parallel with the extension work of the new pipe B. I will do it.
その結果、既設管Ａの布設位置に、既設管Ａより大径の
新設管Ｂが置換されたこ七となる。As a result, a new pipe B, which has a larger diameter than the existing pipe A, is replaced at the installation position of the existing pipe A.
（５）掘削機の撤去
所定の距離だけ新設管Ｂを延長したら、掘削機１を引き
上げ、新設管Ｂの布設作業を終了する。(5) Removal of the excavator After extending the new pipe B by a predetermined distance, the excavator 1 is pulled up and the work of laying the new pipe B is completed.
くその伯の実施例１〉
前記実施例は、掘削機１の推進手段として、新設管Ｂの
後端に設けた推進用ジヤツキ６の推力を利用した場合に
ついて説明したが、掘進機１側に推進用のジヤツキ等を
取り付けて推力を発生させて推進させることも可能であ
る。Embodiment 1 of Kusonohaku In the above embodiment, the thrust of the propulsion jack 6 installed at the rear end of the newly constructed pipe B was used as the propulsion means for the excavator 1. It is also possible to attach a propulsion jack or the like to generate thrust and propel the vehicle.
くその他の実施例２〉
掘削機１内にエレクタ−装置等を装備すると、新設管Ｂ
がセグメントのような分割組み立て式の管体であっても
、施工が可能である。Other Example 2> When the excavator 1 is equipped with an erector device etc., the new pipe B
Even if it is a segment-like pipe that can be assembled in parts, it can be constructed.
〈本発明の効果〉
本発明は以上説明したようになるから、次のような効果
を得ることができる。<Effects of the Present Invention> Since the present invention is as described above, the following effects can be obtained.
（イ）既設管の布設中心位置と同じ位置に、新設管を布
設できる。(b) A new pipe can be laid at the same location as the center of the existing pipe.
従って、新設管の布設に際し、別ルートを検討する必要
がなく、既設管の有効利用が図れる。Therefore, when installing new pipes, there is no need to consider alternative routes, and existing pipes can be used effectively.
（ロ）新設管の布設に際して、掘削断面積は既設管の外
周から一定範囲という限られた面積で済む。(b) When laying a new pipe, the cross-sectional area of excavation can be limited to a certain range from the outer periphery of the existing pipe.
従って、従来の布設技術と比較して排土量が非常に少な
くて済み、また掘削効率も向」ニし、施工性が著しく改
善される。Therefore, compared to conventional laying techniques, the amount of earth removed is significantly smaller, excavation efficiency is also improved, and workability is significantly improved.
（ハ）既設管の撤去作業を行う場合、新設管が保護殻と
して機能する。(c) When removing existing pipes, the new pipes will function as a protective shell.
従って、既設管の撤去作業が安全かつ容易である。Therefore, the removal work of the existing pipe is safe and easy.
（ニ）新設管の布設作業中に既設管を撤去できるので、
工期を大幅に短縮できる。(d) Existing pipes can be removed while new pipes are being installed.
Construction period can be significantly shortened.
第１図：掘削機の斜視図 第２図：掘削機の断面説明図 Figure 1: Perspective view of excavator Figure 2: Cross-sectional diagram of excavator
Claims (1)
つ、既設管より大径の掘削機を、既設管の外周に外装し
て位置させ、 前記掘削機を既設管の外周に沿わしめて掘進させ、 掘削機の後方に既設管より大径の新たな管体を接続して
延長し、 前記管体内に位置する既設管を撤去して行うことを特徴
とする、 管体の更新方法[Scope of Claims] An excavator having at least an excavation means and an earth removal means inside a cylindrical body and having a diameter larger than that of the existing pipe is positioned on the outer periphery of the existing pipe, and the excavator is installed in the existing pipe. Excavating along the outer circumference of the pipe, connecting a new pipe body with a larger diameter than the existing pipe to the rear of the excavator and extending it, and removing the existing pipe located inside the pipe body, How to update the tube
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033818A JPS62194396A (en) | 1986-02-20 | 1986-02-20 | Renewal of pipe body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61033818A JPS62194396A (en) | 1986-02-20 | 1986-02-20 | Renewal of pipe body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62194396A true JPS62194396A (en) | 1987-08-26 |
Family
ID=12397060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61033818A Pending JPS62194396A (en) | 1986-02-20 | 1986-02-20 | Renewal of pipe body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62194396A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169092A (en) * | 1987-12-24 | 1989-07-04 | Fujita Corp | Expanding work of existing tube |
| JPH04501598A (en) * | 1989-09-06 | 1992-03-19 | インスティテュト ゴルノゴ デラ シビルスコゴ オトデレニアアカデミイ ナウク エスエスエスエル | How to replace a pipeline without using the trench method |
| JP2004003209A (en) * | 2002-05-31 | 2004-01-08 | Fukuda Corp | Method for replacing existing pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS568176A (en) * | 1979-07-02 | 1981-01-27 | Ricoh Co Ltd | Gap maintaining device |
| JPS5898595A (en) * | 1981-09-30 | 1983-06-11 | 三井建設株式会社 | Drilling method for enlarging tunnel |
-
1986
- 1986-02-20 JP JP61033818A patent/JPS62194396A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS568176A (en) * | 1979-07-02 | 1981-01-27 | Ricoh Co Ltd | Gap maintaining device |
| JPS5898595A (en) * | 1981-09-30 | 1983-06-11 | 三井建設株式会社 | Drilling method for enlarging tunnel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169092A (en) * | 1987-12-24 | 1989-07-04 | Fujita Corp | Expanding work of existing tube |
| JPH04501598A (en) * | 1989-09-06 | 1992-03-19 | インスティテュト ゴルノゴ デラ シビルスコゴ オトデレニアアカデミイ ナウク エスエスエスエル | How to replace a pipeline without using the trench method |
| JP2004003209A (en) * | 2002-05-31 | 2004-01-08 | Fukuda Corp | Method for replacing existing pipe |
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