JPH01239291A - Propelling construction - Google Patents
Propelling constructionInfo
- Publication number
- JPH01239291A JPH01239291A JP6584988A JP6584988A JPH01239291A JP H01239291 A JPH01239291 A JP H01239291A JP 6584988 A JP6584988 A JP 6584988A JP 6584988 A JP6584988 A JP 6584988A JP H01239291 A JPH01239291 A JP H01239291A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- water
- slurry
- pilot
- ground
- 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 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000004576 sand Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 31
- 239000002689 soil Substances 0.000 abstract description 20
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 230000001141 propulsive effect Effects 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 description 8
- 239000002250 absorbent Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的１
（産業上の利用分野）
本発明は非開削で地中に管を布設していく推進工法に関
するものである。[Detailed Description of the Invention] [Objective of the Invention 1 (Field of Industrial Application)] The present invention relates to a propulsion method for laying a pipe underground without excavation.
〈従来の技術）
地中を続削しながら管体を地中に布設していく第１の従
来工法としては、例えば、地山をビットで掘削し、この
掘削土砂をオーガで後方へ排土しながら地中に管体を布
設するようにした工法がある。(Conventional technology) The first conventional construction method involves laying pipes underground while cutting underground. However, there is a construction method that involves laying pipes underground.
また、第２の従来工法としては、地山をビットで掘削す
るようにした点は上記の工法と同様であるが、その掘削
土砂をスラリー化用水と撹拌し、そのスラリーをポンプ
により吸引排土するか、もしくは人聞のスラリー化用水
を循環させて、掘削土砂を排土しながら地中に管体を布
設置るようにした工法がある。In addition, the second conventional method is similar to the above method in that the ground is excavated with a bit, but the excavated soil is mixed with slurry water, and the slurry is sucked and discharged by a pump. Alternatively, there is a construction method in which pipes are installed underground while circulating the slurry water and discharging the excavated soil.
さらに、第３の従来工法としては、上記のようなビット
及びオーガ等は用いずに、高圧水で地山を掘削し、この
掘削土砂を圧気輸送により耕土しながら管体を布設する
ようにした工法がある。Furthermore, a third conventional method is to excavate the ground using high-pressure water, without using the above-mentioned bits and augers, and to install the pipe body while cultivating the excavated soil by pneumatic transportation. There is a construction method.
（発明が解決しようとする課題）
第１の従来工法は、オーガを用いていたため、これを接
続するのに手間がかかり、また、オーガ自体が高価であ
るという問題があった。第２の従来工法は、掘削土砂と
スラリー化用水を撹拌するための装置が必要ぐあり、ま
た、スラリー吸引用のポンプもしくは、スラリー化用水
を循環させるための装置が必要となる。このため、これ
らの装置が高価につくという問題があった。さらに、第
３の工法は、圧気輸送のための装置が必要であり、この
装置が高（西であるという問題があった。(Problems to be Solved by the Invention) The first conventional construction method uses an auger, so there are problems in that it takes time and effort to connect the auger, and the auger itself is expensive. The second conventional construction method requires a device for stirring the excavated earth and sand and slurry water, and also requires a pump for slurry suction or a device for circulating the slurry water. Therefore, there was a problem that these devices were expensive. Furthermore, the third construction method required a device for transporting pressurized air, and there was a problem in that this device was located at a high altitude.
この弁明は上記事情に基づいてなされたもので、格別の
撹拌装置を用いることなく掘削土砂をスラリー状にする
ことができ、また、オーガ等の排土装置やスラリー圧送
用のポンプ等は格別必要とすることなく、掘削土砂のス
ラリーを後方に効率よく排出することができてコスト低
減を図ることのできる＋１１進工法を提供でることを目
的とする。This defense was made based on the above circumstances; excavated soil can be made into a slurry without the use of special stirring equipment, and earth removal equipment such as augers and pumps for pumping slurry are not particularly required. It is an object of the present invention to provide a +11 construction method that can efficiently discharge slurry of excavated earth and sand backwards without having to do so, thereby reducing costs.
［発明の構成］
（′３題を解決するための手段）
この発明は上記課題を解決するために、地山に離隔して
掘設けた２個の立坑の間をパイロット管を口過させ、推
進方向前部には吸水性樹脂を含んだ高圧水の噴射手段が
設けられるとともに排土口が開口され後部には管体を連
結した管引込み装置を前記パイロット管における貫通先
の端部に取付け、該管引込み′８置を回転させつつ前記
パイロット管を地山中に引込み、この引込み時に前記噴
射手段から吸水性樹脂を含んだ高圧水を噴射させて土砂
を掘削し、その掘削土砂と当該吸水性樹脂を含んだ水と
の混合物を前記排土口を通じて前記管体内を排出させつ
つ当該管引込み装置を推進させることを昔日とする。[Structure of the Invention] (Means for Solving Problem '3) In order to solve the above problem, this invention allows a pilot pipe to pass between two vertical shafts that are dug apart from each other in the ground, A means for injecting high-pressure water containing water-absorbing resin is provided at the front in the direction of propulsion, and a soil discharge port is opened, and at the rear, a pipe drawing device connected to a pipe body is attached to the end of the pilot pipe where it is penetrated. The pilot pipe is drawn into the ground while rotating the pipe lead-in position, and when the pilot pipe is drawn in, high-pressure water containing a water-absorbing resin is injected from the injection means to excavate the earth and sand, and the excavated earth and the water are In the old days, the pipe drawing device was propelled while discharging a mixture of water and resin containing the soil from the pipe body through the soil discharge port.
（作用）
上記構成において、管引込み装置を回転させつつパイロ
ット管を地山中に引込み、この回転、引込み時に管引込
み装置の前部に設けた噴射手段から地山に向い吸水性樹
脂を含んだ高圧水を噴ｒＡすることにより、土砂が均等
に掘削される。これと同時に、その掘削土砂と吸水性樹
脂を含んだ水とが混合撹拌されＣスラリー状にされる。(Function) In the above configuration, the pilot pipe is drawn into the ground while rotating the pipe drawing device, and during this rotation and drawing, high pressure containing water-absorbing resin is directed toward the ground from the injection means provided at the front of the pipe drawing device. By spraying water, the earth and sand are excavated evenly. At the same time, the excavated earth and sand and water containing a water-absorbing resin are mixed and stirred to form a C slurry.
このスラリーは、吸水性樹脂を含んでいるので塑水流動
性が高くなって流れ易く詰まりにくくなり、推進による
管引込み装置の前部にかかるｎ力のみで、スラリー圧送
用のポンプ等を格別必要とすることなく、管引込み装置
に連結した管体内に取込まれて、そのまま後方に効率よ
く排出される。Since this slurry contains water-absorbing resin, the fluidity of plastic water is high, making it easy to flow and difficult to get clogged. Only n force is applied to the front part of the pipe drawing device due to propulsion, and a pump for pumping the slurry is not required. It is taken into the pipe body connected to the pipe drawing device and efficiently discharged to the rear as it is.
（実施例）
以下、この発明の実施例を第１図ないし第４図にＵづい
て説明する。(Example) Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.
まず、この実施例に適用される装置、部材及び設備等か
ら説明する。First, the apparatus, members, equipment, etc. applied to this embodiment will be explained.
第１図及び第２図中、Ｐｌ及び１）２は、それぞれ土中
に翻られた発進立坑及び到達立坑であり、発進立坑Ｐ１
には推進装置１が設置され、これに油１１ホース２を介
して油圧源３が接続されている。In Figures 1 and 2, Pl and 1)2 are the starting shaft and the reaching shaft, respectively, which are laid down in the soil, and the starting shaft P1
A propulsion device 1 is installed, and a hydraulic power source 3 is connected to this via an oil 11 hose 2.
４はパイロット管ぐあり、パイロット管４は）ｔｔ進装
置１に取付けられて回転されながら地中に圧入されるよ
うになっている。１１人により、発進立坑［］１から到
達立坑Ｐ２に１通されるパイロット管４の先端部には、
到達立坑Ｐ２側において管引込み装置１０が取付ｔノら
れ、その後部側に被埋設管体５が連結されるようになっ
ている。Reference numeral 4 denotes a pilot pipe, and the pilot pipe 4 is attached to the tt advancing device 1 and press-fitted into the ground while being rotated. At the tip of the pilot pipe 4 that is passed from the starting shaft [ ] 1 to the arrival shaft P2 by 11 people,
A pipe drawing device 10 is installed on the reaching shaft P2 side, and the buried pipe body 5 is connected to the rear side thereof.
６は高吸水性樹脂が溶かされた水を収容したタンク、７
はウォータジェットポンプであり、このウォータジェッ
トポンプ７が送水ホース８を介して管引込み装置１０に
接続されている。6 is a tank containing water in which super absorbent resin is dissolved; 7
is a water jet pump, and this water jet pump 7 is connected to a pipe drawing device 10 via a water supply hose 8.
第３図及び第４図は、上記の管引込み装置１０の構成を
、さらに詳細に示したものであり、管引込み装置１０に
おける推進方向前面部には、高吸水性樹脂を含んだ高圧
水の哨１．）１手段としての噴）１／ズル１３ａ、１３
ｂ、１３ｃ、１３ｄが、それぞれ異なる半径位置に例え
ば４個設けられている。3 and 4 show the configuration of the above-mentioned pipe drawing device 10 in more detail, and the front part of the pipe drawing device 10 in the propulsion direction is provided with high-pressure water containing super absorbent resin. Sentry 1. ) 1 jet as a means) 1/Zur 13a, 13
b, 13c, and 13d are provided, for example, at four different radial positions.
また、その前面部には、扇形状のスラリー排土通路（排
土口）１４が中心軸の回りに４側聞口されている。Moreover, in the front part, a fan-shaped slurry discharge passage (soil discharge port) 14 is provided with four side openings around the central axis.
管体５は、スイベル１５を介して管引込み装置１０に連
結され、管体５には、その管引込み装置１０から引込み
力のみが伝達されて回転されずに土中を引かれるように
なっている。１６は管体５側にＦｉＱ ｉ：Ｊられたス
ラリー取込み口である。The pipe body 5 is connected to a pipe drawing device 10 via a swivel 15, and only the drawing force is transmitted to the pipe body 5 from the pipe drawing device 10, so that the pipe body 5 is pulled through the soil without being rotated. There is. 16 is a slurry intake port provided on the pipe body 5 side.
次に、上述のような装置及び部材等を用いて地中に管体
５を埋設する推進工法及びその作用を説明する。Next, a propulsion method for burying the pipe body 5 underground using the above-mentioned devices and members, etc., and its operation will be explained.
まず、第１図に示すように、発進立坑Ｐ＋ と到達立坑
Ｐ２が掘られ、発振立坑Ｐ１中に推進装置１を設置する
。推進装置１によりパイロット管４を順次継足し、回転
させながら地中に圧入させていく、この圧入により、到
達立坑Ｐ２に貫通されたパイロット管４の先端部に管引
込み装置１０を取付け、その後部にスイベル１５を介し
て被埋設管体５を連結させる。First, as shown in FIG. 1, a starting shaft P+ and a reaching shaft P2 are dug, and the propulsion device 1 is installed in the oscillating shaft P1. The pilot pipes 4 are sequentially added by the propulsion device 1 and forced into the ground while being rotated. Through this press-fitting, the pipe pulling device 10 is attached to the tip of the pilot pipe 4 that has penetrated the reaching shaft P2, and the pipe pulling device 10 is attached to the tip of the pilot pipe 4, The buried pipe body 5 is connected to the swivel 15 via the swivel 15.
このように整えられた後、管引込み装置１０は、推進装
置１により、パイロット管４を介して土中を回転されな
がら発進立坑Ｐ＋側へ引張られる。After being arranged in this way, the pipe pulling device 10 is pulled toward the starting shaft P+ side by the propulsion device 1 while being rotated through the soil via the pilot pipe 4.
このとき、管体５はスイベル１５の作用により回転され
ずに土中を引かれる。そして、管引込み装置１０の推進
時に、ウォータジェットポンプ７により、高吸水性樹脂
の含まれた水がタンク６から吸上げられ、送水ホース８
を通って管引込み装置１０にＪ３ける噴射ノズル１３ａ
〜１３ｄから高吸水性樹脂を含んだ高圧水１１となって
ｌｌａ射され、地山が掘削される。このとき、管引込み
！ｉ！１ｍ１０が回転されながら高吸水性樹脂を含んだ
高圧水１１が噴射されるので、地山は均等に掘削される
。At this time, the tube body 5 is pulled through the soil without being rotated by the action of the swivel 15. When the pipe drawing device 10 is propelled, the water containing the super absorbent resin is sucked up from the tank 6 by the water jet pump 7, and
Injection nozzle 13a at J3 to pipe drawing device 10 through
From 13d to 13d, high-pressure water 11 containing super absorbent resin is injected, and the ground is excavated. At this time, pull in the pipe! i! The ground is excavated evenly because high-pressure water 11 containing super absorbent resin is injected while 1 m10 is being rotated.
そして、これと同時に、その掘削土砂は高吸水性樹脂を
含んだ高圧水１１と混合撹拌され、スラリーとなる。At the same time, the excavated earth and sand is mixed and stirred with high pressure water 11 containing super absorbent resin to form a slurry.
このスラリーは、高吸水性樹脂を含んでいて、塑性流動
性が高いので、流れ易く詰りにくいという性質を有して
おり、管引込み５Ａ置１０がパイロット管４により引張
られるときの圧力で、スラリー排土通路１４を効率よく
通過し、管体５の前部に取付けられたスラリー取込み口
１６を通り管体５の内部へ取込まれてそのまま管体５の
後方へＩＭ出される。第２図中の１２は、この排出され
るスラリーを示している。This slurry contains a super absorbent resin and has high plastic fluidity, so it has the property of being easy to flow and hard to clog. The slurry efficiently passes through the discharging passage 14, passes through the slurry intake port 16 attached to the front of the tube 5, is taken into the tube 5, and is taken out to the rear of the tube 5 as it is. 12 in FIG. 2 indicates this discharged slurry.
これに対し、通常の水を含んだ砂の場合であれば、管内
にはいると流れにくくなり、すぐ閉塞してしまう。そし
て閉塞しないようにするのであれば、大量の水が必要と
なる。On the other hand, if sand contains normal water, once it enters the pipe, it becomes difficult to flow and it immediately becomes clogged. And if you want to keep it from becoming clogged, you'll need a lot of water.
そして、管引込み装置１０が、地中を前進するに従い、
順次、管体５を継足して行き、これとともにスラリー１
２の排出を行ないつつ、所要長さの管体５を土中に非開
削で布設することが可能となる。Then, as the pipe pulling device 10 advances underground,
Sequentially, pipe bodies 5 are added, and slurry 1 is added together with them.
2, it becomes possible to lay the pipe body 5 of a required length in the soil without digging.
次いで、具体的な推進工法施行例を述べる。Next, we will discuss specific examples of implementation of the propulsion method.
−股的な砂質地盤において、本推進工法の施工により、
管径１５０ｍｍの管体の布設を行なった。-With this propulsion construction method on sandy ground,
A pipe body with a pipe diameter of 150 mm was installed.
加泥材の一種として使用されている高吸水性樹脂の１つ
であるアクリル酸・ビニルアルコール共Φ合体からなる
＾吸水性樹脂０．１ｋＱを水４０更に溶かした溶液を作
り、これを３０〜５０ｋＱ／ｃｍ２程度に加圧して管引
込み装置を回転させながら地山に向って噴射し、地山を
掘削するとともにその掘削土をスラリーにした。A solution is prepared by dissolving 0.1 kQ of a water-absorbing resin consisting of a combination of acrylic acid and vinyl alcohol, which is one of the highly water-absorbing resins used as a type of muddying material, in 40 parts of water. It was pressurized to about 50 kQ/cm2 and injected toward the ground while rotating the pipe drawing device to excavate the ground and turn the excavated soil into slurry.
スラリーは、管径１５０ｍｍの管体内を、はぼ３０ｉ／
ｍｉｎの能率で通り、後方に排出された。The slurry was poured into a tube with a diameter of 150 mm at a rate of approximately 30 mm.
It passed through with an efficiency of 10 minutes and was ejected backwards.
このようにして管体を３０ｍ土中に引込んで布設するこ
とができた。In this way, the pipe was able to be pulled 30 meters into the soil and installed.
これに対し、スラリーの排出を行なわない場合は、管体
を３０ｍに自って推進させ、布設することは不可能であ
った。On the other hand, when the slurry was not discharged, it was impossible to propel the pipe body 30 m by itself and install it.
上記の具体的ｆｆ１Ｉ例から明らかなように、この実施
例の推進工法は、格別の撹拌装置及び排土装置を用いる
ことなく、掘削土砂をスラリー状にし、これを容易に排
出させながら、管体の推進、布設を行なうことができる
。As is clear from the specific ff1I example above, the propulsion method of this embodiment turns excavated soil into a slurry without using any special stirring equipment or soil removal equipment, and while easily discharging the slurry, can be promoted and installed.
［発明の効果］
以上説明したように、本発明によれば、管引込み装置を
回転させつつパイロット管を地山中に引込み、この回転
、引込み時に管引込み装置のＪｆｆ進方自前部に設けた
噴射手段から吸水性樹脂を含んだ高圧水を噴射させるよ
うにしたので、推進方向の土砂を均等に掘削し、これと
同時にその掘削土砂と吸水性樹脂を含んだ水とを混合撹
拌して活水流動性の高いスラリー状とすることができ、
このようなスラリーを管引込み装置の推進によるその前
部にかかる圧力のみで、連結した管体内に取込み、後方
に効率よく排出することができる。従って格別の混合撹
拌装置及びスラリー圧送用のポンプ等を不要とすること
ができてコスト低減を図ることができるという利点があ
る。[Effects of the Invention] As explained above, according to the present invention, the pilot pipe is drawn into the ground while rotating the pipe drawing device, and during this rotation and drawing, the injection provided at the Jff advancing part of the pipe drawing device Since the means injects high-pressure water containing water-absorbing resin, the earth and sand in the direction of propulsion are evenly excavated, and at the same time, the excavated earth and sand are mixed and stirred with water containing water-absorbing resin to create active water flow. It can be made into a slurry with high
Such slurry can be taken into the connected pipe bodies and efficiently discharged rearward only by the pressure applied to the front part by the propulsion of the pipe drawing device. Therefore, there is an advantage that a special mixing/stirring device, a pump for pumping the slurry, etc. can be made unnecessary, and costs can be reduced.
第１図ないし第４図は本発明に係るｌｆｔｆｔ法の実ｍ
例を示すもので、第１図はパイロット・管の圧入状態を
示す図、第２図は掘削土砂取込みによる管体の引込み布
設の状態を示す図、第３図は管引込み装置等部分の拡大
側面図、第４図は第３図のＡ矢視図である。
１：推進８置、 ４：パイロット管、５；管体、
６：高吸水性樹脂を含んだ水のタンク、７：ウォータジ
ェットポンプ、
１０：管引込み装置、 １２ニスラリ−１１３ａ〜１
３ｄ：噴）１ノズル（噴（ト）手段）、１４ニスラリ−
排土通路（排土ＩＩ ）、１６：スラリー取込み口、
Ｐｌ ：発進立坑、 Ｐ２ 二到達立坑。Figures 1 to 4 show the actual lftft method according to the present invention.
Examples are shown: Figure 1 shows the state of press-fitting the pilot pipe, Figure 2 shows the state of the pipe being pulled in and laid by taking in excavated soil, and Figure 3 is an enlarged view of the pipe lead-in device, etc. The side view, FIG. 4, is a view taken along arrow A in FIG. 1: Propulsion 8 positions, 4: Pilot pipe, 5: Pipe body, 6: Tank of water containing super absorbent resin, 7: Water jet pump, 10: Pipe drawing device, 12 Nislary-113a-1
3d: Spray) 1 nozzle (spray (g) means), 14 Niss slurry
Earth removal passageway (earth removal II), 16: Slurry intake port, Pl: Starting shaft, P2 Second arrival shaft.
Claims (1)
を貫通させ、推進方向前部には吸水性樹脂を含んだ高圧
水の噴射手段が設けられるとともに排土口が開口され後
部には管体を連結した管引込み装置を前記パイロット管
における貫通先の端部に取付け、該管引込み装置を回転
させつつ前記パイロット管を地山中に引込み、この引込
み時に前記噴射手段から吸水性樹脂を含んだ高圧水を噴
射させて土砂を掘削し、その掘削土砂と当該吸水性樹脂
を含んだ水との混合物を前記排土口を通じて前記管体内
を排出させつつ当該管引込み装置を推進させることを特
徴とする推進工法。A pilot pipe is passed through between two vertical shafts dug separately in the ground, and a means for spraying high-pressure water containing water-absorbing resin is installed at the front in the direction of propulsion, and an earth discharge port is opened at the rear. In this step, a pipe drawing device connected to a pipe body is attached to the end of the pilot pipe where the pipe is penetrated, and the pilot pipe is drawn into the ground while rotating the pipe drawing device, and when the pilot pipe is drawn in, water-absorbing resin is sprayed from the injection means. excavating earth and sand by injecting high-pressure water containing the water, and discharging a mixture of the excavated earth and sand and water containing the water-absorbing resin from the pipe body through the earth discharge port while propelling the pipe drawing device. A propulsion method characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63065849A JP2533906B2 (en) | 1988-03-22 | 1988-03-22 | Propulsion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63065849A JP2533906B2 (en) | 1988-03-22 | 1988-03-22 | Propulsion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01239291A true JPH01239291A (en) | 1989-09-25 |
| JP2533906B2 JP2533906B2 (en) | 1996-09-11 |
Family
ID=13298872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63065849A Expired - Lifetime JP2533906B2 (en) | 1988-03-22 | 1988-03-22 | Propulsion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533906B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257299A (en) * | 2015-11-04 | 2016-01-20 | 中铁十八局集团有限公司 | Slurry-balanced pipe jacking machine receiving device and technology under high water condition |
-
1988
- 1988-03-22 JP JP63065849A patent/JP2533906B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257299A (en) * | 2015-11-04 | 2016-01-20 | 中铁十八局集团有限公司 | Slurry-balanced pipe jacking machine receiving device and technology under high water condition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2533906B2 (en) | 1996-09-11 |
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