JPH0730675B2 - Existing pipe laying replacement method - Google Patents
Existing pipe laying replacement methodInfo
- Publication number
- JPH0730675B2 JPH0730675B2 JP63203410A JP20341088A JPH0730675B2 JP H0730675 B2 JPH0730675 B2 JP H0730675B2 JP 63203410 A JP63203410 A JP 63203410A JP 20341088 A JP20341088 A JP 20341088A JP H0730675 B2 JPH0730675 B2 JP H0730675B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- shaft
- rod
- pilot
- auger rod
- 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.)
- Expired - Lifetime
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】 [産業上の利用分野] 本発明は地中に埋設した陶管、ヒューム管等の既設管
を、地上より開削することなく、新設管と取り替える、
既設管の敷設替え工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention replaces an existing pipe such as a pottery pipe or a fume pipe buried in the ground with a new pipe without excavating from the ground.
This relates to the method of replacing the existing pipe.
[従来の技術] 従来の既設管の敷設替え工法としては、第4図に示すよ
うに、先端がテーパー形状で既設管2より大きい外径の
胴部1aを有する掘削機1の後端に敷設替えすべき新設管
3を取り付け、図示しない発進立坑からジャッキで前方
へ圧入力を付勢し、前記掘削機1をワイヤロープ等のケ
ーブル4で前方より牽引しつつ、エアホース5を介して
後方より送る圧気により掘削機1内のエアハンマを作動
して掘削機1と新設管3とが共に前進して、掘削機1の
先端のテーパー部が既設管内へ入り込み、これを破砕し
つつ空隙を外方へおしひろげて既設管2を新設管3と取
り替える方法が開示されている。この場合、テーパー部
1bには外周より半径方向外側に向かって拡大する切削刃
1cが設けられており、これを油圧等により拡張し、既設
管の壁体を効果的に破砕するようになっている。[Prior Art] As a conventional method for laying an existing pipe, as shown in FIG. 4, it is laid at the rear end of the excavator 1 having a tapered tip and a trunk portion 1a having an outer diameter larger than that of the existing pipe 2. A new pipe 3 to be replaced is attached, a pressure input is biased forward from a start shaft (not shown) with a jack, and the excavator 1 is pulled from the front by a cable 4 such as a wire rope, and from the rear via an air hose 5. The air hammer in the excavator 1 is actuated by the compressed air sent, and the excavator 1 and the new pipe 3 advance together, and the tapered portion at the tip of the excavator 1 enters into the existing pipe, crushes this and evacuates the gap outward. A method is disclosed in which the existing pipe 2 is replaced with a new pipe 3 in a flat manner. In this case, taper
1b has a cutting edge that expands radially outward from the outer circumference
1c is provided, which is expanded by hydraulic pressure or the like to effectively crush the wall of the existing pipe.
また、第5図に示すように、掘削機本体11の前方に亀頭
状で既設管2の内径に合わせた取水装置12が連結され、
前記掘削機本体11は、前面のスポーク形カッター11aが
回転駆動し、前記スポーク形カッター11aで破砕した既
設管と周囲の土砂を掘削機本体11に内蔵するクラッシャ
ーで破砕し、後方へ排出する。前記掘削機本体11の後端
には発進立坑のジャッキで前方へ圧入力を付勢された新
設管3が接近して給進されている。既設管が下水管の場
合は、取水装置12の頭部から取水装置12内に入った汚水
は連結管13内を通り、掘削機本体11内を経て、汚水管14
から発進立坑に設けたポンプにより地上へ送られる。ま
た、スポーク形カッター11aの回転により破砕された既
設管2と土砂は送泥水管15で掘削機本体11内に送られた
泥水と混合されて排泥管16を経てポンプにより地上に排
出される。Further, as shown in FIG. 5, a water intake device 12 having a glans shape and adapted to the inner diameter of the existing pipe 2 is connected in front of the excavator body 11,
In the excavator main body 11, a spoke cutter 11a on the front surface is driven to rotate, and an existing pipe crushed by the spoke cutter 11a and surrounding earth and sand are crushed by a crusher built in the excavator main body 11 and discharged to the rear. At the rear end of the excavator body 11, a new pipe 3 which is biased forward by a jack of a starting shaft is pushed forward. When the existing pipe is a sewer pipe, the sewage that has entered the water intake device 12 from the head of the water intake device 12 passes through the connecting pipe 13, the excavator main body 11 and the sewage pipe 14
Is sent to the ground by a pump installed in the starting shaft. Further, the existing pipe 2 and the earth and sand crushed by the rotation of the spoke cutter 11a are mixed with the muddy water sent into the excavator body 11 by the mud water pipe 15 and discharged to the ground by the pump through the mud pipe 16. .
[発明が解決しようとする課題] しかるに、前記第4図に示す従来の掘削機による既設管
の敷設替え工法は、破砕した既設管の破片を周囲の土砂
と共に外方へおしひろげて圧密し、新設管を圧入する方
法であるので、圧密中に付近に埋設されているガス管、
ケーブル埋設管等を破損する恐れがあり、また、新設管
の周囲の土砂を圧密するので新管の径は既設管以下のも
のとしか取り替えられないという欠点がある。[Problems to be Solved by the Invention] However, in the conventional method of laying and replacing an existing pipe by an excavator shown in FIG. 4, the crushed fragments of the existing pipe are spread outward together with the surrounding earth and sand to consolidate them. Since it is a method of press-fitting a new pipe, a gas pipe buried in the vicinity during consolidation,
There is a risk that the cable burying pipe may be damaged and that the diameter of the new pipe can be replaced only with an existing pipe or smaller because the soil around the new pipe is compacted.
次に、第5図に示す従来の掘削機による既設管の敷設替
え工法は、既設管がヒューム管等の鉄筋の入った管の場
合は、掘削機の進行と共に鉄筋がスポーク形カッター11
aに巻き付いて前方に固まったり、たとえそこを通過し
たとしても、クラッシャーの刃を破損する恐れがあり、
さらに排泥管16内や図示しないポンプを通過することは
困難であるので既設管が鉄筋の入らない陶管等の場合に
しか施工できないという欠点がある。Next, in the existing pipe laying replacement method by the conventional excavator shown in FIG. 5, when the existing pipe is a pipe containing reinforcing bars such as fume pipes, the reinforcing bars are spoke-shaped cutters 11 as the excavator progresses.
There is a risk of damaging the crusher blade even if it winds around a and hardens forward, or passes through it.
Further, since it is difficult to pass through the sludge pipe 16 or a pump (not shown), there is a disadvantage that the existing pipe can be installed only when it is a ceramic pipe or the like without reinforcing bars.
本発明は上述した事情に鑑みてなされたものである。The present invention has been made in view of the above circumstances.
[課題を解決するための手段] 本発明の既設管の敷設替え工法は、発進立坑から既設管
中にオーガーロッドを回転・給進し、該オーガーロッド
の先端が到達立坑へ貫通した後、前記オーガーロッド基
端に所定長さのロッドを連結し、既設管端面を切削する
刃口を先端に装着した所定長さのパイロット管を前記ロ
ッド外周に嵌挿して1組とし、前記オーガーロッドを発
進立坑側で回転せしめつつ、前記パイロット管を前記オ
ーガーロッドとは別途に発進立坑側から回転・給進して
前記パイロット管先端の刃口で既設管を破砕し、前記1
組分を給進した後、前記ロッドを取り外すと共に、該ロ
ッド外周にパイロット管を嵌挿して1組とし、発進立坑
側より1組ずつ順次連結して前記オーガーロッドを回転
しつつパイロット管を回転・給進し、前記刃口が到達立
坑に到達した後、到達立坑で前記刃口を取り外し、次に
前記オーガーロッドを発進立坑側へ引き抜き撤去し、次
に発進立坑側より前記パイロット管に新設管を接続して
順次給進し、到達立坑に出現したパイロット管を順次回
収することにより、前記パイロット管を全部新設管と置
換することを特徴とする手段と、到達立坑から既設管中
にオーガーロッドを回転・給進し、該オーガーロッドの
先端が発進立坑へ貫通した後、前記オーガーロッドを到
達立坑から回転せしめ、発進立坑側から既設管端面を切
削する刃口を先端に装着したパイロット管を回転・給進
して前記刃口で既設管を破砕し、前記刃口が到達立坑に
到達した後、到達立坑で前記刃口とオーガーロッドの基
端側の1本を取り外し、次に前記オーガーロッドを順次
到達立坑へ引き抜き回収し、発進立坑側より前記パイロ
ット管に新設管を接続して順次給進し、到達立坑に出現
したパイロット管を順次回収することにより、前記パイ
ロット管を全部新設管と置換することを特徴とする手段
とより成る。[Means for Solving the Problems] The existing pipe laying replacement method of the present invention comprises rotating and feeding an auger rod from the starting shaft into the existing pipe, and after the tip of the auger rod penetrates to the reaching shaft, Connect a rod of a specified length to the base end of the auger rod, and insert a pilot pipe of a specified length with a cutting edge that cuts the end face of the existing pipe at the tip into the rod outer circumference to form one set and start the auger rod. While rotating on the vertical shaft side, the pilot pipe is rotated and fed separately from the starting vertical shaft separately from the auger rod, and the existing pipe is crushed by the blade end of the pilot pipe tip.
After feeding the set, the rod is removed and the pilot pipe is inserted into the rod outer circumference to make one set, and the pilot pipe is rotated while rotating the auger rod by sequentially connecting one set from the starting shaft side.・ After feeding, after the blade reaches the reaching shaft, remove the blade at the reaching shaft, then pull out and remove the auger rod to the starting shaft side, and then newly install the pilot pipe from the starting shaft side. Means characterized by replacing all pilot pipes with new pipes by connecting pipes and feeding sequentially, and successively collecting pilot pipes that appeared in the reaching shaft, and an auger from the reaching shaft into the existing pipe After rotating and feeding the rod, the tip of the auger rod penetrates into the starting shaft, and then the auger rod is rotated from the reaching shaft, and the blade end for cutting the existing pipe end surface from the starting shaft side is the tip. Rotate and feed the installed pilot pipe to crush the existing pipe at the blade opening, and after the blade opening reaches the reaching shaft, remove the blade opening and the auger rod one at the base end side at the reaching shaft. , Next, the auger rod is sequentially pulled out and collected to the reaching shaft, and a new pipe is connected to the pilot pipe from the starting shaft side to sequentially feed, and the pilot pipes appearing in the reaching shaft are sequentially collected to obtain the pilot. The pipe is wholly replaced with a new pipe.
[作用] 刃口が装着されるまでは、オーガーロッドの螺旋翼で既
設管内が掃除されて、管内のものは発進立坑側または到
達立坑側へ排出される。また、前記オーガーロッドがガ
イドとなって刃口が回転・給進し、既設管の破砕された
破片と刃口周囲の土砂はオーガーロッドの螺旋翼で既設
管内を通り先方(到達立坑)へ排出される。また、既設
管がヒューム管等の場合の鉄筋は、オーガーロッドの螺
旋翼にそってオーガー軸に巻き付き、この状態でオーガ
ーロッドが回転する。[Operation] Until the blade is installed, the inside of the existing pipe is cleaned by the spiral blade of the auger rod, and the inside of the pipe is discharged to the starting shaft or the reaching shaft. In addition, the blade rotates and feeds using the auger rod as a guide, and the crushed fragments of the existing pipe and the earth and sand around the blade pass through the existing pipe by the spiral blade of the auger rod and are discharged to the destination (reaching shaft). To be done. Further, when the existing pipe is a fume pipe or the like, the reinforcing bar winds around the auger shaft along the spiral blade of the auger rod, and the auger rod rotates in this state.
[実施例] 以下、添付図に基づいて本発明の実施例を詳細に説明す
る。Embodiments Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
第1図(a)〜(f)は本発明の既設管の敷設替え工法
の第1の請求項の一実施例を示す工程図である。FIGS. 1 (a) to 1 (f) are process diagrams showing one embodiment of the first claim of the existing pipe laying replacement method of the present invention.
先ず、第1図(a)に示すように既設管2内に発進立坑
22から到達立坑23へ向けてオーガーロッド17を回転・給
進する。この際オーガーロッド17は、所定の長さのもの
を発進立坑22内で順次継ぎ足して作業する。First, as shown in FIG. 1 (a), a starting shaft is installed in the existing pipe 2.
The auger rod 17 is rotated and fed from 22 toward the reaching shaft 23. At this time, the auger rod 17 having a predetermined length is successively added in the starting shaft 22 for work.
次に、前記オーガーロッド17先端が到達立坑に到達した
時点で、前記オーガーロッド17の基端に所定長さのロッ
ド17cを連結し、その外周に既設管端面を切削する刃口1
8aを先端に装着した所定長さのパイロット管18bを嵌挿
して1組とし、前記オーガーロッド17を発進立坑側のド
リルヘッド21で回転せしめつつ、前記パイロット管18b
をドリルヘッド20で回転・給進して、前記刃口18aで既
設管を破砕し、前記1組分を給進する。第1図(b)及
び第1図(c)は前記1組分を給進した後、、パイロッ
ト管18bを順次継ぎ足して回転・給進する状態を示し、
前記1組分の給進の後、第1図(c)に示すようにドリ
ルヘッド20を後退せしめて前記ロッド17cを取り外し、
新たに1本分のパイロット管18bを前記ロッド17c外周に
嵌挿して1組とし、これをドリルヘッド20と、発進立坑
22内に端部がのぞいているドリルロッド17及びパイロッ
ト管18bとの間に接続し、ドリルロッド17を回転させつ
つ、パイロット管18bを回転・給進する。この動作を繰
り返すことにより第1図(d)に示すように前記刃口18
aが到達立坑23に到達したら、刃口18aを到達立坑で取り
外す(第1図(e))。次に、第1図(e)に示すよう
にロッド17a及びオーガーロッド17を発進立坑側へ引き
抜き撤去する。次に第1図(f)に示すように発進立坑
22側より前記パイロット管18bに新設管3を順次接続し
てドリルヘッド20で給進せしめ、到達立坑に出現したパ
イロット管18bを順次回収し、全部のパイロット管18bを
新設管3と置換する。Next, when the tip of the auger rod 17 reaches the reaching shaft, a rod 17c having a predetermined length is connected to the base end of the auger rod 17, and a cutting edge 1 for cutting the existing pipe end face on the outer periphery thereof.
A pilot pipe 18b having a predetermined length attached to the tip of 8a is fitted to form a set, and the auger rod 17 is rotated by the drill head 21 on the starting shaft side while the pilot pipe 18b is rotated.
Is rotated and fed by the drill head 20, the existing pipe is crushed by the blade opening 18a, and the one set is fed. FIG. 1 (b) and FIG. 1 (c) show a state in which, after feeding one set, the pilot pipes 18b are successively added to rotate and feed.
After feeding one set, the drill head 20 is retracted to remove the rod 17c, as shown in FIG. 1 (c).
One pilot pipe 18b is newly inserted into the outer circumference of the rod 17c to form one set, and this is set to the drill head 20 and the starting shaft.
It is connected between a drill rod 17 and a pilot pipe 18b, the ends of which are seen inside 22, and the pilot pipe 18b is rotated and fed while rotating the drill rod 17. By repeating this operation, as shown in FIG.
When a reaches the reaching shaft 23, the blade opening 18a is removed at the reaching shaft (FIG. 1 (e)). Next, as shown in FIG. 1 (e), the rod 17a and the auger rod 17 are pulled out toward the starting shaft and removed. Next, as shown in Fig. 1 (f), the starting shaft
The new pipe 3 is sequentially connected to the pilot pipe 18b from the side of 22 and is advanced by the drill head 20. The pilot pipes 18b appearing in the reaching shaft are sequentially collected, and all the pilot pipes 18b are replaced with the new pipe 3.
第1図(f)において18cはパイロット管18bと新設管3
とを連結する接手である。In FIG. 1 (f), 18c is a pilot pipe 18b and a new pipe 3
A joint that connects and.
第2図(a)〜(f)は本発明の既設管の敷設替え工法
の第2の請求項の一実施例を示す工程図である。FIGS. 2 (a) to 2 (f) are process diagrams showing one embodiment of the second claim of the existing pipe laying replacement method of the present invention.
第1の請求項の方法と相違する点は、オーガーロッド
17を到達立坑23に設置したドリルヘッド21で発進立坑22
に向かって回転・給進し、従って、第一図(a)に示
したロッド17cの着脱が不要で、パイロット管18bによ
る既設管2の破砕給進は発進立坑側でパイロット管18b
を継ぎ足すのみであり、さらに、オーガーロッド17の
撤去は到達立坑23側に行うことである。次に、図に従っ
て説明すれば、到達立坑23側のドリルヘッド21で発進立
坑22に向かってオーガーロッド17を回転・給進し(第2
図(a))、発進立坑22からドリルヘッド20で先端に刃
口18aを装着したパイロット管18bを回転・給進し(第2
図(b))、この場合、発進立坑22側で、パイロット管
18bを順次接続して行う(第2図(c))。パイロット
管18bの給進が完了したら(第2図(d))、到達立坑2
3側で刃口18aを取り外し、オーガーロッド17を到達立坑
23側へ引き抜いて順次回収する(第2図(e))。次
に、発進立坑22側より新設管3を順次継ぎ足して給進
し、パイロット管18bを到達立坑23で回収する。(第2
図(f))。第2図(f)において18cはパイロット管1
8bと新設管3とを連結する接手である。The difference from the method of the first claim is that the auger rod is
Start 17 with the drill head 21 installed in the reaching shaft 23
Therefore, the rod 17c shown in FIG. 1 (a) does not need to be attached / detached, and the crushing and feeding of the existing pipe 2 by the pilot pipe 18b is performed by the pilot pipe 18b on the starting shaft side.
Is only added, and the auger rod 17 is removed on the reaching shaft 23 side. Next, referring to the figure, the drill head 21 on the side of the reaching shaft 23 rotates and feeds the auger rod 17 toward the starting shaft 22 (second
(A)), the pilot tube 18b with the blade 18a attached to the tip is rotated and fed from the starting shaft 22 by the drill head 20 (second
Figure (b)), in this case, the pilot pipe on the side of the starting shaft 22
18b are sequentially connected (FIG. 2 (c)). When the pilot pipe 18b is completely fed (Fig. 2 (d)), the reaching shaft 2
Remove the blade opening 18a on the 3 side and reach the auger rod 17
It is pulled out to the 23 side and collected sequentially (Fig. 2 (e)). Next, the new pipes 3 are sequentially added from the side of the starting shaft 22 to feed, and the pilot pipe 18b is recovered at the reaching shaft 23. (Second
(F)). In FIG. 2 (f), 18c is a pilot pipe 1
This is a joint that connects 8b and the new pipe 3.
到達立坑23側に新設管3の先端がのぞくと既設管2の新
設管3への置換が完了する。When the tip of the new pipe 3 is seen on the side of the reaching shaft 23, the replacement of the existing pipe 2 with the new pipe 3 is completed.
なお、第3図に示すように、本発明の既設管の敷設替え
工法における第1図の場合においては、例えばこれを下
水管の敷設替えに適用すれば、下水管を使用中に既設管
と取り替えることができる。図によって説明すれば、敷
設替え区間は汚水をオーガーロッド17,ロッド17c中を通
すことができるので、到達立坑23内はウォータースイベ
ル25を介して既設管端内のバッカー26に挿入したパイプ
26aとホース27で連結して汚水を通し、発進立坑22内は
削孔機28の中空軸28a内を通り、ウォータースイベル29
を介して水バック30内に投入した水中ポンプ30aにホー
ス29aで連結する。新設管3より水バック30に流入した
汚水は、水中ポンプ30aでロッド17c、オーガーロッド17
内を通り、既設管内2内に圧送される。従って、既設管
2を破砕して刃口18aが給進中に下水管を使用できる。As shown in FIG. 3, in the case of FIG. 1 in the existing pipe laying replacement method of the present invention, for example, when this is applied to the laying replacement of the sewer pipe, the sewer pipe is replaced with the existing pipe during use. It can be replaced. Explaining with the figure, since the sewage can pass through the auger rod 17 and the rod 17c in the re-laying section, the inside of the reaching shaft 23 is a pipe inserted into the backer 26 inside the existing pipe end via the water swivel 25.
26a and a hose 27 are connected to pass sewage, and the inside of the starting shaft 22 passes through the inside of the hollow shaft 28a of the boring machine 28, and the water swivel 29
A submersible pump 30a charged into the water bag 30 via a hose 29a. The wastewater that has flowed into the water bag 30 from the new pipe 3 is connected to the rod 17c and the auger rod 17 by the submersible pump 30a.
It passes through the inside and is pumped into the inside of the existing pipe 2. Therefore, the sewer pipe can be used while the existing pipe 2 is crushed and the blade opening 18a is being advanced.
また、第1図(c)に示すパイロット管18b接続中、第
1図(e)に示すオーガーロッド17回収中及び第1図
(f)に示す新設管3接続中は、図示しないバイパスラ
インを水中口ポンプ30aの押上とパッカー26に挿入した
パイプ26a間に布設して置いて、図示しないバルブで切
り換えて、このバイパスラインを通じて汚水を通すよう
にする。Also, while connecting the pilot pipe 18b shown in FIG. 1 (c), while recovering the auger rod 17 shown in FIG. 1 (e), and while connecting the new pipe 3 shown in FIG. 1 (f), a bypass line not shown is connected. The submerged mouth pump 30a is pushed up and placed between the pipe 26a inserted into the packer 26, and is switched by a valve (not shown) to pass the waste water through the bypass line.
なお、第3図において、既設管2が新設管であり、新設
管3が既設管であってもよい。In addition, in FIG. 3, the existing pipe 2 may be a new pipe and the new pipe 3 may be an existing pipe.
[発明の効果] 以上説明したように、本発明の既設管の敷設替え工法に
よれば次の如き効果を奏する。[Effects of the Invention] As described above, according to the laying replacement method for an existing pipe of the present invention, the following effects are achieved.
第4図に示す従来の工法に比べ、本発明は付近に埋設
されているガス管、ケーブル埋設管等を破損する恐れが
ない。また、本発明の第1の請求項の方法は管を使用中
でも施工が可能である。Compared with the conventional construction method shown in FIG. 4, the present invention has no risk of damaging gas pipes, cable burying pipes, etc. buried in the vicinity. Further, the method according to the first aspect of the present invention can be applied even while the pipe is in use.
第5図に示す従来の工法に比べると、本発明はヒュー
ム管等の鉄筋の入った既設管を破砕する場合、鉄筋はオ
ーガーロッド基端の刃口先端付近から次第に螺旋翼にそ
って先方に巻き付いて行くが、オーガーロッド17の螺旋
翼は発進立坑から到達立坑まで連続しており、鉄筋は途
中にかたまることなく螺旋翼にそって巻き付くので、オ
ーガーロッドの発進立坑又は到達立坑への回収時に取り
除くことができ、鉄筋の入った既設管でも敷設替えする
ことが可能である。また、掘削機内にクラッシャーや原
動機等を内蔵しないので、構造が簡単である。さらに施
工中に掘削機内のクラッシャーや原動機等が故障する
と、従来のものは修理が困難であるが、本発明の工法に
よれば回転・給進用の機械は立坑内にあるので修理が簡
単でしかも故障頻度が少ないので作業能率が上る。その
上、さらに本発明の工法は水を使用しない乾式工法であ
るので、ポンプ類が不要であり、泥土による公害の発生
がない。Compared with the conventional construction method shown in FIG. 5, when crushing an existing pipe containing rebar such as a fume pipe, the present invention gradually advances the rebar from the vicinity of the tip of the blade end of the auger rod base along the spiral blade. The spiral blade of the auger rod 17 is continuous from the starting shaft to the reaching shaft, and the rebar wraps around the spiral blade without getting stuck in the middle, so the auger rod is recovered to the starting shaft or the reaching shaft. It can be removed at any time, and it is possible to replace existing pipes with reinforcing bars. In addition, since the crusher and the prime mover are not built in the excavator, the structure is simple. Furthermore, if the crusher or the prime mover in the excavator breaks down during construction, it is difficult to repair the conventional one, but according to the method of the present invention, the rotating / feeding machine is in the shaft, so repair is easy. Moreover, since the frequency of failure is low, work efficiency increases. Moreover, since the construction method of the present invention is a dry construction method that does not use water, no pumps are required and no pollution occurs due to mud.
第1図(a)〜(f)は本発明の既設管の敷設替え工法
の第1の請求項の一実施例を示す工程図、第2図(a)
〜(f)は本発明の既設管の敷設替え工法の第2の請求
項の一実施例を示す工程図、第3図は配管を使用中に本
発明工法を施工する場合の概略を説明する平面図、第4
図及び第5図は従来の工法を示す説明図である。 2……既設管、3……新設管、17……オーガーロッド、
17c……ロッド、18a……刃口、18b……パイロット管、2
2……発進立坑、23……到達立坑。1 (a) to 1 (f) are process diagrams showing one embodiment of the first claim of the existing pipe laying replacement method of the present invention, and FIG. 2 (a).
~ (F) is a process drawing showing an embodiment of the second claim of the existing pipe laying replacement method of the present invention, and Fig. 3 shows an outline of the case of applying the present invention method while using piping. Top view, 4th
FIG. 5 and FIG. 5 are explanatory views showing a conventional construction method. 2 …… Existing pipe, 3 …… New pipe, 17 …… Auger rod,
17c …… rod, 18a …… blade, 18b …… pilot tube, 2
2 …… Starting shaft, 23 …… Driving shaft.
Claims (2)
回転・給進し、該オーガーロッドの先端が到達立坑へ貫
通した後、前記オーガーロッド基端に所定長さのロッド
を連結し、既設管端面を切削する刃口を先端に装着した
所定長さのパイロット管を前記ロッド外周に嵌挿して1
組とし、前記オーガーロッドを発進立坑側で回転せしめ
つつ、前記パイロット管を前記オーガーロッドとは別途
に発進立坑側から回転・給進して、前記パイロット管先
端の刃口で既設管を破砕し、前記1組分を給進した後、
前記ロッドを取り外すと共に、該ロッド外周にパイロッ
ト管を嵌挿して1組とし、発進立坑側より1組ずつ順次
連結して前記オーガーロッドを回転しつつパイロット管
を回転・給進し、前記刃口が到達立坑に到達した後、到
達立坑で前記刃口を取り外し、次に前記オーガーロッド
を発進立坑側へ引き抜き撤去し、次に発進立坑側より前
記パイロット管に新設管を接続して順次給進し、到達立
坑に出現したパイロット管を順次回収することにより、
前記パイロット管を全部新設管と置換することを特徴と
する既設管の敷設替え工法。1. An auger rod is rotated and fed from an initiating shaft into an existing pipe, and after the tip of the auger rod penetrates into the reaching shaft, a rod of a predetermined length is connected to the base end of the auger rod to install the existing pipe. Insert a pilot pipe of a predetermined length with a blade end for cutting the pipe end face at the tip, and insert it into the outer circumference of the rod.
As a set, while rotating the auger rod on the starting shaft side, the pilot pipe is rotated and fed from the starting shaft side separately from the auger rod, and the existing pipe is crushed at the tip of the pilot pipe tip. , After paying for the one set,
While removing the rod, a pilot pipe is fitted into the outer circumference of the rod to form one set, and the pilot pipe is rotated and fed while rotating the auger rod by sequentially connecting one set from the starting shaft side and rotating the auger rod. After reaching the reaching shaft, remove the blade at the reaching shaft, then pull out and remove the auger rod to the starting shaft side, then connect the new pipe to the pilot pipe from the starting shaft side and feed sequentially. Then, by sequentially collecting the pilot pipes that appeared in the reaching shaft,
A method for replacing an existing pipe, wherein the pilot pipe is entirely replaced with a new pipe.
回転・給進し、該オーガーロッドの先端が発進立坑へ貫
通した後、前記オーガーロッドを到達立坑から回転せし
め、発進立坑側から既設管端面を切削する刃口を先端に
装着したパイロット管を回転・給進して前記刃口で既設
管を破砕し、前記刃口が到達立坑に到達した後、到達立
坑で前記刃口とオーガーロッドの基端側の1本を取り外
し、次に前記オーガーロッドを順次到達立坑へ引き抜き
回収し、発進立坑側より前記パイロット管に新設管を接
続して順次給進し、到達立坑に出現したパイロット管を
順次回収することにより、前記パイロット管を全部新設
管と置換することを特徴とする既設管の敷設替え工法。2. An auger rod is rotated and fed from the reaching vertical shaft into an existing pipe, and after the tip of the auger rod penetrates into the starting vertical shaft, the auger rod is rotated from the reaching vertical shaft and the existing pipe is moved from the starting vertical shaft side. Rotate and feed a pilot pipe equipped with a blade to cut the end face to crush the existing pipe at the blade, and after the blade reaches the reaching shaft, the blade and auger rod at the reaching shaft. , The auger rod is sequentially pulled out to the reaching shaft and recovered, and a new pipe is connected to the pilot pipe from the starting shaft side to sequentially feed the pilot pipe, which appears in the reaching shaft. A method for laying and replacing an existing pipe, wherein the pilot pipe is entirely replaced with a new pipe by sequentially collecting the pipes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63203410A JPH0730675B2 (en) | 1988-08-16 | 1988-08-16 | Existing pipe laying replacement method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63203410A JPH0730675B2 (en) | 1988-08-16 | 1988-08-16 | Existing pipe laying replacement method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0254095A JPH0254095A (en) | 1990-02-23 |
JPH0730675B2 true JPH0730675B2 (en) | 1995-04-10 |
Family
ID=16473607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63203410A Expired - Lifetime JPH0730675B2 (en) | 1988-08-16 | 1988-08-16 | Existing pipe laying replacement method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0730675B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5058965B2 (en) * | 2008-12-26 | 2012-10-24 | 三和機材株式会社 | Existing pipe reconstruction promotion method and equipment |
-
1988
- 1988-08-16 JP JP63203410A patent/JPH0730675B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0254095A (en) | 1990-02-23 |
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