JPH01150087A - Method of replacing existing main pipe with novel main pipe - Google Patents
Method of replacing existing main pipe with novel main pipeInfo
- Publication number
- JPH01150087A JPH01150087A JP62310350A JP31035087A JPH01150087A JP H01150087 A JPH01150087 A JP H01150087A JP 62310350 A JP62310350 A JP 62310350A JP 31035087 A JP31035087 A JP 31035087A JP H01150087 A JPH01150087 A JP H01150087A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- excavator
- new
- old
- pipes
- 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
- 238000000034 method Methods 0.000 title claims description 19
- 230000037431 insertion Effects 0.000 abstract 2
- 238000003780 insertion Methods 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/205—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal
- E21B7/206—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal using down-hole drives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
- E21B7/30—Enlarging drilled holes, e.g. by counterboring without earth removal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1658—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the old pipe being ruptured prior to insertion of a new pipe
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野コ
本願発明は地中に埋設した旧管、たとえば水道管やガス
管などを新管に取り替える方法、特に地表を掘り起さず
に新旧管を取り替える方法に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a method for replacing old pipes buried underground, such as water pipes and gas pipes, with new pipes, in particular, a method for replacing old and new pipes without digging up the ground surface. It concerns how to replace it.
[従来の技術]
旧管とくに鋳鉄管が埋設後老化して機能を果すのが困難
になったり、需要増大のため能力不足を生じて新管と取
り替える必要があるとき、地上を全面掘削して旧管を掘
り出す工法は費用、労力がかかる上、地上の交通の障害
となるので地表を掘り起さずに新旧本管を取り替えるの
が望ましい。[Conventional technology] When old pipes, especially cast iron pipes, have aged and become difficult to function after being buried, or when capacity is insufficient due to increased demand and it is necessary to replace them with new pipes, it is necessary to excavate the entire surface above ground. Digging out old pipes is expensive and labor-intensive, and it also obstructs surface traffic, so it is preferable to replace the old and new pipes without digging up the ground.
新管を地中の旧管に挿通する、いわゆるパイプインパイ
プ方式がこれに該当するが、当然新管の内径は旧管の内
径より小さくなり、ガス、水道の輸送能力の減退をもた
らす。This is the case with the so-called pipe-in-pipe method, in which a new pipe is inserted into an old pipe underground, but the inner diameter of the new pipe is naturally smaller than the inner diameter of the old pipe, resulting in a reduction in gas and water transport capacity.
本願発明の基礎となる従来技術はこの問題を解決する発
明で「既設の本管を新しい本管と取替える方法と装置」
(特公昭60−27873@公報第4図〜第6図)に
詳しく開示されている。The prior art that forms the basis of the present invention is an invention that solves this problem: ``Method and apparatus for replacing existing main pipe with new main pipe.''
(Japanese Patent Publication No. 60-27873 @ Figures 4 to 6 of the publication) discloses this in detail.
また第7図は、この発明を商業ベースで実施した場合の
状態を説明するカタログから引用したものである。また
第8図はこれを改良した方法である。FIG. 7 is taken from a catalog explaining the state of the invention when it is implemented on a commercial basis. Moreover, FIG. 8 shows a method improved from this.
この従来技術は旧管より大きい外径の胴部を有する掘削
機の後端に新管等を取付け、両者が共に前進して掘削機
の先端が旧管内へ入り込み、これを破砕しつつ空隙をお
しひろげて旧管を新管と取り替える方法および装置であ
る。In this conventional technology, a new pipe, etc. is attached to the rear end of an excavator, which has a body with a larger outer diameter than the old pipe, and as both move forward together, the tip of the excavator enters the old pipe, crushing it and filling the void. This is a method and device for expanding and replacing old pipes with new ones.
第4図から第6図に示すこの従来技術の実施例に基いて
、もう少し具体的に内容を声明する。Based on the embodiments of this prior art shown in FIGS. 4 to 6, the contents will be described in more detail.
掘削[7aは旧管11aの内壁へ入り込んで、この壁体
を破断する前方部分と、新管等1aを牽引するため締結
する後方部分とからなる。前方部分は切削面としての切
削刃先13をふくむ頭部14を有し、その前端は旧管の
管列を潜って挿通されてきたケーブル10aを介してウ
ィンチ(図示せず〉によって前方へ引張り寄せられる。Excavation [7a] consists of a front part that enters the inner wall of the old pipe 11a and breaks this wall, and a rear part that is fastened to pull the new pipe etc. 1a. The front part has a head 14 that includes a cutting edge 13 as a cutting surface, and the front end is pulled forward by a winch (not shown) via a cable 10a that has been inserted through the tube row of the old pipe. It will be done.
切削刃先13は羽根15をふくみ、羽根の少なくとも1
つは旧管の壁体を効果的に破砕するために掘削機から半
径方向外側に向って回動できるようにする。The cutting edge 13 includes a blade 15, and at least one of the blades
One allows for radial outward rotation from the excavator to effectively fracture the walls of the old pipe.
第5図において旧管の内部を潜って前方から延びてきた
流体圧送ホースを通じて圧送された流体(油圧)は、掘
削機の頭部内に設けられたピストン16を押し上げ、こ
のピストンによって羽根15の一端が押し上げられて傾
斜角度を増し、旧管11aを内壁から半径方向外側に向
って押し拡げる作用を起す。In FIG. 5, the fluid (hydraulic pressure) pumped through the fluid pumping hose extending from the front through the inside of the old pipe pushes up the piston 16 installed in the head of the excavator, and this piston causes the blades 15 to be pushed up. One end is pushed up and the angle of inclination is increased, causing an effect of pushing the old tube 11a outward in the radial direction from the inner wall.
この掘削機と、後に締結する新管等を前方へ移動するの
は、エアハンマー17の叩打による反力を主体とし、そ
の補助的な付勢力として前方からのウィンチによる牽引
による他、場合によっては既に出願人が提案(特願昭6
1−159184号)したように新管等の後端から油圧
ジヤツキで押し込む方法を付加することもできる。The excavator and the new pipes, etc. that will be connected later are moved forward mainly by the reaction force from the hitting of the air hammer 17, and as an auxiliary urging force by pulling from the front with a winch, and in some cases. The applicant has already proposed (patent application 1986)
1-159184), it is also possible to add a method of pushing in the new pipe from the rear end using a hydraulic jack.
[発明が解決しようとする問題点]
本願発明は前記従来技術をベースとして、より効果的に
実施ができるように関連技術を開発したものである。[Problems to be Solved by the Invention] The present invention is based on the above-mentioned prior art and has developed related technologies so that it can be implemented more effectively.
実施上の問題点として、掘削機の後端には機内のエアハ
ンマを作動するためのエアホースが後方から接続されて
いる。また羽根を回動するための油圧を与える給油管が
接続される実施も考えられる。As a practical problem, an air hose for operating an air hammer inside the machine is connected to the rear end of the excavator from the rear. It is also conceivable to connect an oil supply pipe that provides oil pressure for rotating the blades.
このような管類は新管等が1本物の長い可撓性のあるプ
ラスチック管であるときは、予め、この管内を挿通して
おき、新管等の前進とともに屈曲可能に前進していけば
よい。第7図はまさに係る実施態様を示すものといえよ
う。しかしこのような場合、発進坑の後方に長大な作業
スペースを必要とする。一般に管路は道路下に埋設され
ているため、そのような長大な作業スペースを設けるこ
とは周辺交通の障害となる。また、第7図の例では掘削
機の進行にともなってコンプレッサーを移動させる必要
があり、施工の支障となる。もし、コンプレッサーを移
動せずに施工を行なおうとすれば、必要以上の長さ(最
低、発進坑から到達坑までの長さの1.5倍)のエアホ
ースを接続しておかなければならず、送気効率が低下す
る。If the new pipe, etc. is a real long flexible plastic pipe, such pipes should be inserted into the pipe in advance and moved forward so that it can be bent as the new pipe moves forward. good. It can be said that FIG. 7 shows just such an embodiment. However, in such a case, a large working space is required behind the starting shaft. Generally, pipelines are buried under roads, so creating such a long work space will be a hindrance to surrounding traffic. Furthermore, in the example shown in FIG. 7, it is necessary to move the compressor as the excavator advances, which poses a hindrance to construction work. If you want to perform construction without moving the compressor, you will need to connect an air hose that is longer than necessary (at least 1.5 times the length from the starting hole to the destination hole). , the air supply efficiency decreases.
作業スペースを削減するためには新管等を所望の長さの
単管として第8図に示すように掘削機の進行に伴って順
次単管を継合して管路を形成すればよいが、この場合に
は施工途中で何回も掘削機への送気を停止して新管等の
継合、エアホースなどの継ぎ足しく解体・再接合)、掘
削機と新管等を一体化しているワイヤーの再締結などを
行なわなければならないため、多大の作業時間を必要と
し、作業性が極度に低下する。また、新管等内に挿通さ
れるエアホースなどのホース類は多数の継手を有するた
め、送気効率が低下するとともに、新管等の内面に損傷
を与える恐れもある。さらに、高価な継手を多数使用す
るため、経済性も損なわれる。In order to reduce the work space, it is possible to use new pipes, etc. as a single pipe of the desired length, and to form a conduit by sequentially joining the single pipes as the excavator advances, as shown in Figure 8. In this case, the air supply to the excavator was stopped several times during the construction process to connect new pipes, dismantle and reconnect air hoses, etc.), and integrate the excavator and new pipes. Since the wires must be refastened, a large amount of work time is required, and work efficiency is extremely reduced. Furthermore, since hoses such as air hoses that are inserted into new pipes, etc. have a large number of joints, air supply efficiency is reduced and there is a risk of damage to the inner surface of the new pipe, etc. Furthermore, the use of a large number of expensive joints impairs economic efficiency.
本願発明は以上に述べた問題点を解決するため最小限の
占有面積で施工可能であり、連続的に高能率の施工が行
なわれる取替方法の提供を目的とする。In order to solve the above-mentioned problems, the present invention aims to provide a replacement method that can be constructed with a minimum occupied area and that can be constructed continuously with high efficiency.
[問題点を解決するための手段]
本願発明に係る既設の本管を新しい本管と取り替える方
法は、新管等が所望の長さの単管を継合して管路を形成
するものであり、かつそれぞれの単管はその管周の一部
が軸方向全長に亘ってI!脱自在であることにより前に
述べた問題点を解決することができた。[Means for solving the problem] The method of replacing an existing main pipe with a new main pipe according to the present invention is a method in which a new pipe, etc. is formed by joining single pipes of a desired length to form a conduit. Yes, and each single tube has a portion of its circumference that is I! over the entire length in the axial direction. The above-mentioned problem could be solved by being detachable.
ざらにより具体的には前記着脱自在が管周の一部を管軸
方向に平行に切り欠いた長溝と、この長溝に適合する嵌
入片とよりなること、さらに前記長溝と、嵌入片との間
に薄肉の弾性体を介装したことにより解決の手段をより
明確に提示した。More specifically, the removable member comprises a long groove cut out in a part of the tube periphery parallel to the tube axis direction, and a fitting piece that fits into the long groove, and further between the long groove and the fitting piece. By interposing a thin-walled elastic body, we have more clearly presented a means of solving the problem.
[作用と実施例] 実施例を示す第1図A、B、Cより第3図A。[Function and Examples] From FIGS. 1A, B, and C to FIG. 3A showing the embodiment.
B(イ)(ロ)(ハ)(ニ)、Cに基いて本願発明の詳
細な説明する。The present invention will be explained in detail based on B (a), (b), (c), (d), and C.
第1図Aは所望長さの単管の正面図、同図8は側面図、
同図Cは脱着部分の拡大図であり、本体1に管周の一部
を管軸方向に平行に切り欠いた長溝2を設け、ここへ適
合する嵌入片3を別に製作する。この図の例では長溝2
と嵌入片3の相接する側面に段差4をそれぞれ設は両段
差を係止して、ビス5(又はボルトなどの締金具)を使
用して両部材を螺着する。新管等がライナーであり、旧
管を−Hライナーに取り替えた後、新管を挿通する場合
には第1図の方法でよいが、はじめから直接新管を牽引
して取り替えるときは着脱部分に水封機能が必要である
から第2図のようにゴムなどの薄肉の弾性体6を介在し
て水道管路などに必要な耐水圧性を具えるように図る。Figure 1A is a front view of a single tube of desired length, Figure 8 is a side view,
Figure C is an enlarged view of the detachable part.A long groove 2 is provided in the main body 1 by cutting out a part of the circumference of the tube parallel to the tube axis direction, and a fitting piece 3 that fits there is separately manufactured. In the example in this figure, the long groove 2
Steps 4 are provided on the opposing sides of the fitting piece 3, and both steps are locked, and both members are screwed together using screws 5 (or fasteners such as bolts). If the new pipe is a liner and you want to insert the new pipe after replacing the old pipe with a -H liner, the method shown in Figure 1 will suffice. Since a water-sealing function is required for the pipe, a thin elastic body 6 such as rubber is interposed as shown in FIG. 2 to provide water pressure resistance necessary for water pipes and the like.
また、場合によっては樹脂などによる接着を用いても良
い。Further, depending on the case, adhesion using resin or the like may be used.
第3図A、B(イ)(ロ)(ハ)(ニ)、Cは第1図の
単管を継ぎ合せて新しい管路を形成していく経過を示す
ものである。3A, B (a), (b), (c), (d), and C show the process of joining the single pipes shown in FIG. 1 to form a new pipe line.
ここで例示する施工手順は、
1、第3図Aに示すように掘削機7にコンプレッサー8
からの掘削機駆動用エアホース9やウィンチからのケー
ブル10などを接続し、掘削機の先端を先にして移動さ
せ、掘削機内に設置したエアハンマーにより掘削機7で
旧管11後端面を叩打して旧管11を破断し、破断した
旧管内の間隙に掘削機を入り込ませる。The construction procedure exemplified here is as follows: 1. As shown in Figure 3A, the compressor 8 is installed in the excavator 7.
Connect the air hose 9 for driving the excavator and the cable 10 from the winch, move the excavator with its tip first, and use the excavator 7 to strike the rear end of the old pipe 11 using an air hammer installed inside the excavator. The old pipe 11 is broken, and an excavator is inserted into the gap within the broken old pipe.
2、第3図B(イ)(ロ)(ハ) (ニ)に示すように
前記の掘削機貫入中に新管等1の1本に嵌合片3を取り
はずしてその長溝2よりエアホース9などを入り込ませ
ホースを入れた後、嵌合片を嵌入して、掘削機の後端に
取付け、ワイヤーなどで掘削機と新管等を一本化する。2. As shown in Fig. 3B (a), (b), (c), and (d), during the excavator penetration, remove the fitting piece 3 from one of the new pipes 1 and insert the air hose 9 from the long groove 2. After inserting the hose, fit the fitting piece, attach it to the rear end of the excavator, and connect the excavator and the new pipe with wire etc.
ざらに第3図Cに示すように、掘削機と新管等を共に移
動させ、破断した本管内の間隙に新管等を布設していく
。この時ホースリール12を使用して所望の長さごとに
エアホース9を巻戻して繰り出して行けば作業性が一層
高まり、現場の整理が容易となる。As roughly shown in Figure 3C, the excavator and the new pipe are moved together and the new pipe is laid in the gap in the broken main pipe. At this time, if the hose reel 12 is used to rewind the air hose 9 to each desired length and then let it out, the work efficiency will be further improved and the site will be easier to organize.
3、順次、前記と同じ方法により、次に接続される新管
等の中にエアホースを入れ、布設されつつある新管等の
後端に接続して発進坑から到達坑まで新管等を布設する
。3.Sequentially, using the same method as above, insert the air hose into the new pipe, etc. that will be connected next, connect it to the rear end of the new pipe, etc. that is being installed, and lay the new pipe, etc. from the starting hole to the destination hole. do.
4、新管等がライナーなどある場合、それらライナーな
どが所定の位置に設置された後、挿入・と押し込みによ
り新管を布設する。4. If the new pipe has a liner, etc., after the liner etc. is installed in the predetermined position, install the new pipe by inserting and pushing.
以上の手順により、掘削機を停止させることなく、つま
り掘削機への送気を停止させることなく、新管等を順次
接続して発進坑から到達坑まで新管等を布設することが
できる。By the above procedure, it is possible to connect new pipes, etc. one after another and install the new pipes, etc. from the starting shaft to the destination shaft, without stopping the excavator, that is, without stopping the air supply to the excavator.
[発明の効果]
本願発明は以上に述べた構成と作用を有するから、狭隘
な占有面積である発進坑を合理的に活用して第7図に示
した従来技術の問題点を解決した上、第8図に示した従
来技術の問題点も解決し、結局すべてのトラブルを解消
することができた。[Effects of the Invention] Since the present invention has the configuration and operation described above, it solves the problems of the prior art shown in FIG. 7 by rationally utilizing the starting shaft which occupies a narrow area. The problems of the prior art shown in FIG. 8 were also solved, and all the troubles were finally solved.
したがって敢えて繰返すまでもなく作業スペースの縮小
、作業時間の短縮、継手など施工部材の省略、新管等の
内面保護、送気効率の改善、ホースリールを使用すれば
一掃作業が簡便となる実施例特有の効果など最初に検討
した課題のことごとくを解決する効果を享受することが
できる。Therefore, there is no need to repeat this example, which reduces work space, shortens work time, eliminates construction parts such as joints, protects the inner surface of new pipes, improves air supply efficiency, and makes cleaning work easier by using a hose reel. You can enjoy the effects of solving all of the issues that were initially considered, such as unique effects.
第1図A、B、Cは本願実施例の正面図、側面図および
着脱部分の拡大図。
第2図は弾性体を介装した実施例の着脱部分の拡大図。
第3図A、B(イ)(ロ)(ハ) (ニ)およびCは本
願実施例を示し、Aは正面図、B(イ)(ロ) (ハ)
(ニ)は新管等とエアホースとの経時的変化、Cは次
の経過を示す正面図である。
第4図から第6図は本願発明の基本となった公知技術の
異なる実施例をそれぞれ示す正面図、第7図と第8図は
前記公知技術の異なる施工状態を説明する正面図である
。
1・・・・・・新管等の本体、2・・・・・・長溝、3
・・・・・・嵌入片4・・・・・・段差、5・・・・・
・ビス、6・・・・・・ゴム(弾性体)7・・・・・・
掘削機、8・・・・・・コンプレッサー9・・・・・・
エアホース、10・・・・・・ケーブル11・・・・・
・旧管FIGS. 1A, B, and C are a front view, a side view, and an enlarged view of the attachment/detachment portion of the embodiment of the present application. FIG. 2 is an enlarged view of the attachment/detachment part of the embodiment in which an elastic body is interposed. Figure 3 A, B (a) (b) (c) (d) and C show the embodiment of the present application, A is a front view, B (a) (b) (c)
(D) is a front view showing changes over time in the new pipe etc. and the air hose, and C is a front view showing the next progress. 4 to 6 are front views showing different embodiments of the known technology that is the basis of the present invention, and FIGS. 7 and 8 are front views illustrating different construction states of the known technology. 1...Main body of new pipe, etc., 2...Long groove, 3
...Inset piece 4...Step, 5...
・Screw, 6...Rubber (elastic body) 7...
Excavator, 8... Compressor 9...
Air hose, 10... Cable 11...
・Old pipe
Claims (3)
う)より大きい外径の胴部を有する掘削機の後端に新し
い本管またはこれを保護するライナーなど(以下「新管
」という)を取付け、これらを前方又は/及び後方より
ほぼ水平前方へ付勢すると共に、該新管等の内部を挿通
して掘削機内へ達するホースなどを介して後方より圧気
を送給して掘削機内のエアハンマーを作動させて掘削機
と新管とが共に前進して掘削機の先端が旧管内へ入り込
み、これを破砕しつつ空隙をおしひろげて旧管を新管と
取り替える方法において、前記新管等は所望の長さの単
管を継合して管路を形成するものであり、かつそれぞれ
の単管はその管周の一部が軸方向全長に亘って着脱自在
であることを特徴とする既設の本管を新しい本管と取り
替える方法。(1) A new main pipe or a liner to protect it (hereinafter referred to as “new pipe”) is attached to the rear end of the excavator, which has a body with a larger outer diameter than the existing main pipe buried underground (hereinafter referred to as “old pipe”). At the same time, pressurized air is supplied from the rear via a hose that passes through the inside of the new pipe and reaches the inside of the excavator. A method in which the air hammer inside the excavator is activated, the excavator and the new pipe move forward together, and the tip of the excavator enters the old pipe, crushing it and expanding the gap to replace the old pipe with the new pipe. In the new pipe, etc., a pipe line is formed by joining single pipes of a desired length, and a part of the circumference of each single pipe is freely attachable and detachable over the entire length in the axial direction. A method of replacing an existing main with a new main, characterized by:
り欠いた長溝と、この長溝に適合する嵌入片とよりなる
特許請求の範囲第1項記載の既設の本管を新しい本管と
取り替える方法。(2) The removable pipe comprises a long groove cut out in a part of the pipe circumference parallel to the pipe axis direction, and a fitting piece that fits into the long groove. How to replace the mains.
う)より大きい外径の胴部を有する掘削機の後端に新し
い本管またはこれを保護するライナーなど(以下「新管
等」という)を取付け、これらを前方又は/及び後方よ
りほぼ水平前方へ付勢すると共に該新管等の内部を挿通
して掘削機内へ達するホースなどを介して後方より圧気
を送給して掘削機内のエアハンマーを作動させて掘削機
と新管とが共に前進して掘削機の先端が旧管内へ入り込
み、これを破砕しつつ空隙をおしひろげて旧管を新管と
取り替える方法において、前記新管等は所望の長さの単
管を継合して管路を形成するものであり、かつそれぞれ
の単管は管周の一部を管軸方向に平行に切り欠いた長溝
と、この長溝に適合する嵌合片とによって着脱自在であ
り、かつ該長溝と嵌合片との間に薄肉の弾性体を介装し
たことを特徴とする既設の本管を新しい本管と取り替え
る方法。(3) A new main pipe or a liner to protect it (hereinafter referred to as “new pipe”) is attached to the rear end of the excavator, which has a body with a larger outer diameter than the existing main pipe buried underground (hereinafter referred to as “old pipe”). pipes, etc.), and force them almost horizontally forward from the front and/or rear, and supply pressurized air from the rear via a hose, etc. that passes through the inside of the new pipes, etc. and reaches the inside of the excavator. A method in which the air hammer inside the excavator is activated, the excavator and the new pipe move forward together, and the tip of the excavator enters the old pipe, crushing it and expanding the gap to replace the old pipe with the new pipe. In the new pipe, etc., a pipe line is formed by joining single pipes of a desired length, and each single pipe has a long groove cut out in a part of the pipe circumference parallel to the pipe axis direction. and a fitting piece that fits into this long groove, the existing main pipe is removable, and a thin elastic body is interposed between the long groove and the fitting piece. How to replace.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62310350A JPH01150087A (en) | 1987-12-07 | 1987-12-07 | Method of replacing existing main pipe with novel main pipe |
GB8817871A GB2213229B (en) | 1987-12-07 | 1988-07-27 | Method and apparatus for pipe replacement |
CA 580575 CA1326600C (en) | 1987-12-07 | 1988-10-19 | Method of pipe replacement |
DE19883835900 DE3835900C2 (en) | 1987-12-07 | 1988-10-21 | Method and device for replacing a pipe laid in the ground |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62310350A JPH01150087A (en) | 1987-12-07 | 1987-12-07 | Method of replacing existing main pipe with novel main pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01150087A true JPH01150087A (en) | 1989-06-13 |
Family
ID=18004177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62310350A Pending JPH01150087A (en) | 1987-12-07 | 1987-12-07 | Method of replacing existing main pipe with novel main pipe |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH01150087A (en) |
CA (1) | CA1326600C (en) |
DE (1) | DE3835900C2 (en) |
GB (1) | GB2213229B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992014089A1 (en) * | 1991-02-12 | 1992-08-20 | Institut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk Sssr | Device for trench-free replacing of pipelines |
FR2684411A1 (en) * | 1991-12-02 | 1993-06-04 | Inst Francais Du Petrole | Detachable connector with lateral exit, method of positioning the cable and use for measurements in a well |
DE4421923A1 (en) * | 1994-06-26 | 1996-01-04 | Preussag Anlagenbau | Method and device for replacing a pipeline buried in the ground |
EP2757296A1 (en) * | 2013-01-22 | 2014-07-23 | Scandinavian No-Dig Centre ApS | Method and system for replacement of existing pipes. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6182086A (en) * | 1984-06-28 | 1986-04-25 | 広瀬 幹夫 | Method of replacement construction of piping installed in ground |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB515703A (en) * | 1938-06-09 | 1939-12-12 | Metal Trim Ltd | Improvements in or relating to protective casings more particularly for electric cables |
GB571714A (en) * | 1944-01-31 | 1945-09-05 | Frederick Braby & Company Ltd | Improvements in and relating to sectional sheet-metal culverts |
GB1216181A (en) * | 1966-09-29 | 1970-12-16 | Jeffrey Walton | Improvements in or relating to conduits |
DE2236018A1 (en) * | 1972-07-19 | 1974-01-31 | Siemens Ag | PROTECTIVE TUBE FOR SINGLE-LINE HIGH VOLTAGE CABLE |
GB2026781B (en) * | 1978-07-28 | 1982-09-08 | Happer Systems Ltd | Below surface ducting |
EP0094694B2 (en) * | 1980-12-02 | 1993-07-14 | British Gas Corporation | Mains insertion |
GB8603540D0 (en) * | 1986-02-13 | 1986-03-19 | Elliott G | Sewer lining |
-
1987
- 1987-12-07 JP JP62310350A patent/JPH01150087A/en active Pending
-
1988
- 1988-07-27 GB GB8817871A patent/GB2213229B/en not_active Expired - Lifetime
- 1988-10-19 CA CA 580575 patent/CA1326600C/en not_active Expired - Fee Related
- 1988-10-21 DE DE19883835900 patent/DE3835900C2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6182086A (en) * | 1984-06-28 | 1986-04-25 | 広瀬 幹夫 | Method of replacement construction of piping installed in ground |
Also Published As
Publication number | Publication date |
---|---|
DE3835900C2 (en) | 1997-07-24 |
GB2213229A (en) | 1989-08-09 |
DE3835900A1 (en) | 1989-06-15 |
CA1326600C (en) | 1994-02-01 |
GB2213229B (en) | 1991-11-20 |
GB8817871D0 (en) | 1988-09-01 |
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