JPS6383398A - Cut-off construction method and device in pipe burying propulsive device - Google Patents
Cut-off construction method and device in pipe burying propulsive deviceInfo
- Publication number
- JPS6383398A JPS6383398A JP61229274A JP22927486A JPS6383398A JP S6383398 A JPS6383398 A JP S6383398A JP 61229274 A JP61229274 A JP 61229274A JP 22927486 A JP22927486 A JP 22927486A JP S6383398 A JPS6383398 A JP S6383398A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- pipe
- screw
- buried pipe
- auger
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims description 10
- 230000001141 propulsive effect Effects 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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) [Abstract] 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、地中に下水道管、ガス管、ケーブル挿入管を
埋設する管理設推進装置での止水工法及びその工法を実
施するための装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a water stop construction method in a management facility propulsion device for burying sewer pipes, gas pipes, and cable insertion pipes underground, and a method for implementing the construction method. Regarding equipment.
かかる管理設用の工事に使用されるものとして、第５図
に示すような装置がある。There is a device as shown in FIG. 5 that is used for construction of such management facilities.
図中１，１′はヒユーム管等の埋設管、２はその先端に
装着する先導管で、該先導管２は先端にシリンダ４によ
り方向修正可能な断面三角匣状の刃口３を遊嵌する。In the figure, 1 and 1' are buried pipes such as hume pipes, and 2 is a guide pipe attached to the tip of the pipe.A blade 3 with a triangular box-shaped cross section that can be adjusted in direction by a cylinder 4 is loosely fitted to the tip of the guide pipe 2. do.
これら、先導管２及び埋設管１，１′・・−一一一内に
鋼管ケーシング５を挿通し、刃口３内に掘削ヘッド６ａ
をまたケーシング５内にスクリュー６ｂを収めたスクリ
ューオーガ６を設置した。The steel pipe casing 5 is inserted into the leading pipe 2 and the buried pipes 1, 1', etc., and the excavation head 6a is inserted into the cutting edge 3.
Also, a screw auger 6 containing a screw 6b was installed inside the casing 5.
図中８は発進側の立孔７内に置かれる基台で、該基台８
上では推進ジヤツキ９で前進及び後退する支持枠１０を
設け、この支持枠１０にモータｌｌａ及び減速機１１ｂ
による駆動装置１１を取付け、この駆動装置１１に前記
スクリューオーガ６のスクリュー６ｂ端を連結するとと
もに支持枠１０に埋設管１゜１ ’ −−−−−一及び
ケージ！グ５の後端を結合する。8 in the figure is a base placed in the vertical hole 7 on the starting side, and the base 8
In the above, a support frame 10 that moves forward and backward by a propulsion jack 9 is provided, and a motor lla and a speed reducer 11b are attached to this support frame 10.
A drive device 11 is attached to the drive device 11, and the end of the screw 6b of the screw auger 6 is connected to the drive device 11, and the buried pipe 1°1' ------1 and the cage are connected to the support frame 10. Connect the rear ends of the group 5.
このようにして、駆動装置１１によりスクリュー６ｂを
回動すると先端の掘削ヘッド６ａも回転して刃口３の前
面の地盤を掘削する。掘削された土砂はスクリュー６ｂ
でケーシング５内を後方に運ばれ、支持枠１０の排出口
１２により排出される。In this way, when the screw 6b is rotated by the drive device 11, the excavation head 6a at the tip also rotates to excavate the ground in front of the cutting edge 3. The excavated earth and sand are transported by screw 6b.
It is carried backward inside the casing 5 and discharged through the discharge port 12 of the support frame 10.
同時に推進ジヤツキ９を伸長して後方に反力を取りなが
ら支持枠１０を基台８上で前進させれば、埋設管１及び
先導管２は前進する。初めの埋設管１を地中に推進させ
たならば、−度支持枠ＩＯを後退させ、その空間にカフ
プラー１３を介して次の埋設管１′を接合し、同様の工
程を繰返し、以後順次後段の埋設管を縦列状態で接合し
ながら必要長推進させる。At the same time, if the propulsion jack 9 is extended and the support frame 10 is moved forward on the base 8 while taking a rearward reaction force, the buried pipe 1 and the leading pipe 2 are moved forward. Once the first buried pipe 1 is propelled into the ground, the -degree support frame IO is retreated, and the next buried pipe 1' is joined in that space via the cuff puller 13, and the same process is repeated. The underground pipes in the latter stage are connected in tandem and moved forward to the required length.
途中の方向修正はシリンダ４で刃口３の向きを変えるこ
とで行い、図示しない到達孔に先導管２が到達したなら
ば、埋設管１，１′・−・−・−を残して他の装置を撤
去して工事は完了する。Midway direction correction is done by changing the direction of the cutting edge 3 using the cylinder 4, and once the leading pipe 2 reaches the reaching hole (not shown), the other pipes are The equipment will be removed and construction will be completed.
この第５図に示す装置を用いれば、地表から開削せずに
管の布設工事が行え、交通等の障害にならずにすむ、し
かし、地盤が滞水砂礫層など軟弱なものである場合、刃
口３から多量の水が装置内に入りこむことになる。この
水は装置の駆動時には土砂とともにあり、処理も比較的
簡単であるが、埋設管１．１’−・・−の継ぎ足し時に
スクリュー６ｂを止めた状態では水のみが流動し処理に
困るものとなる。If the equipment shown in Figure 5 is used, pipe installation work can be carried out without excavating from the ground surface, and there will be no obstruction to traffic, etc. However, if the ground is soft, such as a layer of sand and gravel, A large amount of water will enter the device from the blade opening 3. This water is present along with the earth and sand when the device is running, and disposal is relatively easy. However, if the screw 6b is stopped when adding the buried pipes 1.1'--, only the water will flow, making disposal difficult. Become.
その対策として、第６図に示すように掘削ヘッド６ａを
刃口３に対し栓状に形成し、埋設管の継ぎ足し時にスク
リュー６ｂを少し後方に引くことにより、この掘削ヘッ
ド６ａを刃口３の奥部で当接して止水弁として作用させ
ることが行われている。As a countermeasure, as shown in FIG. 6, the excavation head 6a is formed in the shape of a plug for the cutting edge 3, and when adding a buried pipe, by pulling the screw 6b a little backwards, the digging head 6a is inserted into the cutting edge 3. It is practiced to make contact at the inner part to act as a water stop valve.
しかし、この方法では装置の最前部のみで止水を行うも
のであり、すでにケーシング内に入り込んだ水の流動を
おさえることはできない。また、刃口３と掘削ヘッド６
ａとの間に小石等の介在物が入り込むと止水効果が損な
われてしまう。However, with this method, water is stopped only at the front end of the device, and the flow of water that has already entered the casing cannot be suppressed. In addition, the cutting edge 3 and the drilling head 6
If inclusions such as pebbles get into the space between a and a, the water-stopping effect will be impaired.
本発明の目的は前記従来例の不都合を解消し、ケーシン
グの後方部分で効果的に止水ができる管理設推進装置に
おける止水工法及び装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the disadvantages of the conventional example and to provide a method and device for water shutoff in a management facility propulsion device that can effectively shut off water at the rear portion of the casing.
本発明は前記目的を達成するため、施工すべき埋設管及
びその前端に装着する刃口付きの先導管内にケーシング
を内挿して二重管構造とし、該ケーシング内にオーガの
スクリューを挿通し、該オーガの掘削ヘッドを前記刃口
内に置き、スクリューの駆動装置及び埋設管の推進装置
を後方に備えた管理設推進装置において、ケーシングの
所要個所の周方向へ内側前方へ向くエアーノズルを設け
た装置を使用し、埋設管の継ぎ足し時にケーシングの所
要個所から内側前方に向けてエアーを噴出し、このエア
ー圧でケーシング内の水の流動を阻止することを要旨と
するものである。In order to achieve the above object, the present invention has a double pipe structure by inserting a casing into the buried pipe to be constructed and a leading pipe with a cutting edge attached to the front end thereof, and inserting an auger screw into the casing. The excavation head of the auger is placed in the cutting mouth, and in the control equipment propulsion device, which is equipped with a screw drive device and a buried pipe propulsion device at the rear, air nozzles are provided that face inward and forward in the circumferential direction at required points of the casing. The gist of this method is to use a device to eject air toward the inside and front from required locations in the casing when adding buried pipes, and to use this air pressure to prevent the flow of water within the casing.
本発明によれば、エアーの噴出圧により水の流動を阻止
するものであり、ケーシング内面には止水用の部材を突
出して設けることもないのでスクリューの回転の邪魔に
もならない。そして、ケーシングの後方で止水を行うこ
とにより、すてにケーシング内に入り込んでいる水もそ
のままとどめることができる。According to the present invention, the flow of water is prevented by the jet pressure of air, and no water-stopping member is provided protruding from the inner surface of the casing, so that it does not interfere with the rotation of the screw. By shutting off the water at the rear of the casing, water that has already entered the casing can also be retained.
以下、図面について本発明の実施例を詳細に説明する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明装置を備えた管理設推進装置の一部切欠
いた部分側面図、第２図は要部の縦断側面図、第３図は
第１図のＡ−Ａ線断面図である。Fig. 1 is a partially cutaway side view of a management equipment propulsion device equipped with the device of the present invention, Fig. 2 is a longitudinal sectional side view of the main part, and Fig. 3 is a sectional view taken along the line A-A in Fig. 1. .
ところで、管理設推進装置の全体構造については前記第
５図で示した従来例とほぼ同じであり、同一構成要素に
は同一参照符号を付して詳細説明は省略する。Incidentally, the overall structure of the management equipment propulsion device is almost the same as that of the conventional example shown in FIG.
本発明は、前記第５図の管理設推進装置のケーシング５
の所要個所、例えば各ケーシング５の後端近傍にエアー
ノズル１４を内側前方に向けて設けた。The present invention provides a casing 5 of the management equipment propulsion device shown in FIG.
An air nozzle 14 is provided at a required location, for example, near the rear end of each casing 5, facing inward and forward.
このエアーノズル１４はケーシング５の周方向に、外側
から内側に貫通するように１〜数個を適宜間隔で配設す
るものとし、これは後述の第４図で示すようにエアー管
１５を介して地上のエアー供給源１６と連結する。One to several air nozzles 14 are disposed at appropriate intervals in the circumferential direction of the casing 5 so as to penetrate from the outside to the inside. and is connected to an air supply source 16 on the ground.
なお、すべてのケーシング５にこのエアーノズル１４を
設けずに、任意のもののみに設けてもよい。Note that the air nozzle 14 may not be provided in all the casings 5, but only in an arbitrary one.
一方、掘削ヘッド６ａはその背後周面を刃口３の奥部内
周面に当接可能な形状とし、スクリュー６ｂを後方へ少
し引いた時に該掘削ヘッド６ａが栓体となるように構成
する。On the other hand, the excavating head 6a has a rear circumferential surface that can come into contact with the inner circumferential surface of the deep part of the cutting edge 3, and is configured so that when the screw 6b is slightly pulled rearward, the excavating head 6a becomes a plug.
次に、かかる装置を用いて行う本発明の止水工法を説明
する。Next, a water stop construction method of the present invention using such a device will be explained.
埋設管の正大作業は、駆動装置１１によりスクリュー６
ｂを回動すると先端の掘削ヘッド６ａも回転して刃口３
の前面の地盤を掘削する。掘削された土砂はスクリュー
６ｂでケーシング５内を後方に運ばれ、支持枠１０の排
土口１２により排出され、同時に推進ジヤ７キ９を伸長
して後方に反力を取りながら支持枠１０を基台８上で前
進させれば、埋設管１及び先導管２が前進する点は従来
の工法と同様である。The vertical work of the buried pipe is carried out by the screw 6 by the drive device 11.
When b is rotated, the cutting head 6a at the tip also rotates and the cutting edge 3 is rotated.
excavate the ground in front of the The excavated earth and sand is carried backward in the casing 5 by the screw 6b and discharged through the earth discharge port 12 of the support frame 10. At the same time, the propulsion gear 7 and 9 are extended to take the reaction force backward and move the support frame 10. The buried pipe 1 and the leading pipe 2 move forward when moved forward on the base 8, as in the conventional construction method.
このようにして、当該埋設管を地中に推進させたならば
、第４図に示すように次の埋設管をカップラー１３を介
してその後端に接合することになる。Once the buried pipe is driven underground in this manner, the next buried pipe is connected to its rear end via the coupler 13, as shown in FIG.
この埋設管の継ぎ足し時に、エアーノズル１４からケー
シング５の内側前方に向けてエアーを噴出する。When adding this buried pipe, air is ejected from the air nozzle 14 toward the inside and front of the casing 5.
その結果、ケーシング５内に溜り込んでいる水にこのエ
アーがあたり、そのエアー圧で水が後方へ流れ出るのを
阻止することができる。As a result, this air hits the water accumulated in the casing 5, and the air pressure can prevent the water from flowing out to the rear.
また、必要に応じてスクリュー６ｂを後方へ少し引き、
掘削ヘッド６ａで刃口３を遮蔽しておくこともできる。Also, if necessary, pull the screw 6b slightly backwards,
The cutting head 3 can also be shielded by the excavating head 6a.
このようにすれば、刃口３の奥部で外部からの新たな水
がケーシング５内へ流入することも防止でき、前記エア
ー圧で阻止する水はすでにケーシング５内に入り込んで
いる量だけですむ。In this way, new water from the outside can be prevented from flowing into the casing 5 at the back of the blade mouth 3, and the amount of water that is blocked by the air pressure is only the amount that has already entered the casing 5. nothing.
以上述べたように、本発明の管理設推進装置における止
水工法及び装置は、施工すべき埋設管及びその前端に装
着する刃口付きの先導管内にケーシングを内挿して二重
管構造とし、該ケーシング内にオーガのスクリューを挿
通し、該オーガの掘削ヘッドを前記刃口内に置き、スク
リューの駆動装置及び埋設管の推進装置を後方に備えた
管理設推進装置において、ケーシングの途中でケーシン
グ内に入り込んでいる水の流出を止められるものであり
、これにより発進側の立孔にケーシング内の水が流れ出
して作業の妨げとなることもなくなる。また、エアーと
いう無体物を用いるものであり、シール材その他で止水
を行う場合と異なりケーシング内側に突起するものもな
いので、スクリューの動きを阻害するおそれもないもの
である。As described above, the water stop construction method and device in the management facility propulsion device of the present invention have a double pipe structure by inserting a casing into the buried pipe to be constructed and a leading pipe with a cutting edge attached to the front end thereof. The screw of the auger is inserted into the casing, the excavation head of the auger is placed in the cutting edge, and in the management equipment propulsion device, which is equipped with a screw drive device and a buried pipe propulsion device at the rear, the screw of the auger is inserted into the casing in the middle of the casing. This prevents the water that has entered the casing from flowing out, which prevents the water inside the casing from flowing out into the vertical hole on the starting side and interfering with work. Furthermore, since it uses an intangible substance called air, and there is no protrusion inside the casing unlike when water is stopped using a sealing material or the like, there is no risk of impeding the movement of the screw.
第１図は本発明の止水装置を備えた管理設推進装置の一
部切欠いた部分側面図、第２図は同上要部の縦断側面図
、第３図は第１図のＡ−Ａ線断面図、第４図は本発明工
法の１実施例を示す縦断側面図、第５図は従来の管理設
推進装置の全体を示す一部切欠いた側面図、第６図は同
上要部の縦断側面図である。
１．１′・・・埋設管 ２・・・先導管３・・・刃口
４・・・シリンダ５・・・ケーシング ６・
・・スクリューオーガ６ａ・・・掘削へラド ６ｂ・・
・スクリュー７・・・立孔 ８・・・基台
９・・・推進ジヤツキ １０・・・支持枠１１・・・駆
動装置 １１ａ・・・モータ１１ｂ・・・減速機
１２・・・排土口１３・・・カップラー １４・
・・エアーノズル１５・・・エアー９ １６・・・
エアー供給源第１図
ｂ（斤−シレ２す
第２図
ｂ
第３図
１ムFig. 1 is a partially cutaway side view of a management equipment propulsion device equipped with a water stop device of the present invention, Fig. 2 is a longitudinal sectional side view of the same essential parts, and Fig. 3 is taken along line A-A in Fig. 1. 4 is a vertical side view showing one embodiment of the construction method of the present invention, FIG. 5 is a partially cutaway side view showing the entire conventional management equipment propulsion device, and FIG. 6 is a vertical cross section of the main parts of the same. FIG. 1.1'...Buried pipe 2...Leading pipe 3...Blade mouth
4...Cylinder 5...Casing 6.
...Screw auger 6a...Drilling gear 6b...
・Screw 7...Vertical hole 8...Base 9...Propulsion jack 10...Support frame 11...Drive device 11a...Motor 11b...Reducer
12... soil discharge port 13... coupler 14.
... Air nozzle 15 ... Air 9 16 ...
Air supply source Fig. 1b (Plate 2) Fig. 2b Fig. 3 1m
Claims (3)
きの先導管内にケーシングを内挿して二重管構造とし、
該ケーシング内にオーガのスクリューを挿通し、該オー
ガの掘削ヘッドを前記刃口内に置き、スクリューの駆動
装置及び埋設管の推進装置を後方に備えた管理設推進装
置において、埋設管の継ぎ足し時にケーシングの所要個
所から内側前方に向けてエアーを噴出し、このエアー圧
でケーシング内の水の流動を阻止することを特徴とした
管理設推進装置における止水工法。(1) A casing is inserted into the buried pipe to be constructed and a leading pipe with a cutting edge attached to the front end to create a double pipe structure,
The screw of the auger is inserted into the casing, the excavation head of the auger is placed in the cutting mouth, and the casing is inserted into the casing when adding a buried pipe in a management equipment propulsion device that is equipped with a screw drive device and a buried pipe propulsion device at the rear. A water stop construction method for management equipment propulsion equipment that is characterized by blowing air toward the inside and front from the required points of the casing, and using this air pressure to prevent the flow of water inside the casing.
行う特許請求の範囲第１項記載の管理設推進装置におけ
る止水工法。(2) A water stop method in a management facility propulsion device according to claim 1, in which air is ejected by shielding the cutting head with a drilling head.
口付きの先導管内にケーシングを内挿して二重管構造と
し、該ケーシング内にオーガのスクリューを挿通し、該
オーガの掘削ヘッドを前記刃口内に置き、スクリューの
駆動装置及び埋設管の推進装置を後方に備えた管理設推
進装置において、ケーシングの所要個所の周方向へ内側
前方へ向くエアーノズルを設けたことを特徴とした管理
設推進装置における止水装置。(3) A casing is inserted into the buried pipe to be constructed and a leading pipe with a cutting edge attached to the front end to create a double pipe structure, and the screw of the auger is inserted into the casing, and the excavation head of the auger is inserted. A control device propulsion device placed in the blade mouth and equipped with a screw drive device and a buried pipe propulsion device at the rear, characterized in that air nozzles directed inward and forward in the circumferential direction at required points of the casing are provided. Water stop device for propulsion equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61229274A JPS6383398A (en) | 1986-09-26 | 1986-09-26 | Cut-off construction method and device in pipe burying propulsive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61229274A JPS6383398A (en) | 1986-09-26 | 1986-09-26 | Cut-off construction method and device in pipe burying propulsive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6383398A true JPS6383398A (en) | 1988-04-14 |
| JPH058319B2 JPH058319B2 (en) | 1993-02-01 |
Family
ID=16889542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61229274A Granted JPS6383398A (en) | 1986-09-26 | 1986-09-26 | Cut-off construction method and device in pipe burying propulsive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6383398A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238325A (en) * | 1975-09-22 | 1977-03-24 | Iseki Agricult Mach | Automatic steering control device for reaperrthresher |
| JPS5924492U (en) * | 1982-08-04 | 1984-02-15 | 三和機材株式会社 | Pipe propulsion burial device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924492B2 (en) * | 1978-07-18 | 1984-06-09 | 松下電器産業株式会社 | Filling method of active material for batteries |
-
1986
- 1986-09-26 JP JP61229274A patent/JPS6383398A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238325A (en) * | 1975-09-22 | 1977-03-24 | Iseki Agricult Mach | Automatic steering control device for reaperrthresher |
| JPS5924492U (en) * | 1982-08-04 | 1984-02-15 | 三和機材株式会社 | Pipe propulsion burial device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH058319B2 (en) | 1993-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3083226B2 (en) | Drilling rig | |
| JP3529179B2 (en) | Propulsion device | |
| JP3084212B2 (en) | Rectangular shield machine | |
| JPS6383398A (en) | Cut-off construction method and device in pipe burying propulsive device | |
| JP2003214085A (en) | Mouth forming method on arrival of shield machine and shield machine | |
| JPH037797B2 (en) | ||
| JP4011271B2 (en) | Tunnel excavator | |
| JPS6227598Y2 (en) | ||
| JP3087229B2 (en) | Shield machine for dismantling existing shields | |
| JPH04155099A (en) | Underground installation of tube and pilot tube therefor | |
| JP3422557B2 (en) | Underground propulsion method | |
| JPS6126461Y2 (en) | ||
| JP7290621B2 (en) | rock excavator | |
| JPS6156388B2 (en) | ||
| JP4520940B2 (en) | Mud type excavator blockage release device | |
| JP3220421B2 (en) | Existing pipeline update device | |
| JP3890526B2 (en) | Segment and tunnel construction method using the same | |
| JP4211362B2 (en) | Connecting method of shield tunneling machine | |
| JPS6175198A (en) | Propelling of small caliber machine | |
| JP3014969B2 (en) | Buried pipe replacement equipment and method | |
| JPH0324717Y2 (en) | ||
| JPH083352B2 (en) | Installation replacement device for buried pipes | |
| JPH01154995A (en) | Method and device for excavating underground pile | |
| JP2005083007A (en) | Method for laying square pipe | |
| JP3110927B2 (en) | Backfill injection method in propulsion method |