JPH0738467Y2 - Buried pipe for propulsion method - Google Patents
Buried pipe for propulsion methodInfo
- Publication number
- JPH0738467Y2 JPH0738467Y2 JP1989044429U JP4442989U JPH0738467Y2 JP H0738467 Y2 JPH0738467 Y2 JP H0738467Y2 JP 1989044429 U JP1989044429 U JP 1989044429U JP 4442989 U JP4442989 U JP 4442989U JP H0738467 Y2 JPH0738467 Y2 JP H0738467Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- buried pipe
- collar
- buried
- horizontal shaft
- 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
【考案の詳細な説明】 （産業上の利用分野） 本考案は、地中に横坑を形成しつつ、該横坑内を相互に
接続されて順次推進されることにより敷設される推進工
法用埋設管に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is an embedding for a propulsion method which is constructed by forming a horizontal shaft in the ground, interconnecting the horizontal shaft, and sequentially propelling the horizontal shaft. Regarding tubes.
（従来の技術） 下水管、上水管、ケーブル保護管等のように地中に埋設
される埋設管は、例えば、推進工法により敷設される。
該推進工法は、特開昭58-120996号公報に開示されてい
るように、地中に立坑を形成し、該立坑から、先端に掘
削カッターが取付けられた埋設管を挿入して、掘削カッ
ターにて埋設管よりも若干大径の横坑を形成しつつ、埋
設管を該横坑内へ推進させて敷設する。地中の横坑内に
押し込まれた埋設管の後端には、新たに敷設される埋設
管が接合されて、地中の横坑内へ押し込まれて該横坑内
を推進される。(Prior Art) Buried pipes that are buried in the ground such as sewer pipes, water pipes, and cable protection pipes are laid by a propulsion method, for example.
The propulsion method is, as disclosed in Japanese Patent Laid-Open No. 58-120996, forming a vertical shaft in the ground, and inserting a buried pipe having a drilling cutter attached to the tip from the vertical shaft to form a drilling cutter. While forming a horizontal shaft having a diameter slightly larger than that of the embedded pipe, the embedded pipe is propelled into the horizontal shaft and laid. A newly laid buried pipe is joined to the rear end of the buried pipe pushed into the underground shaft to be pushed into the underground shaft and propelled in the shaft.
前記公報に開示された推進工法では、推進方向の後端部
にカラーを有する埋設管が使用されており、該カラーに
て後続の埋設管が接合される。In the propulsion method disclosed in the above publication, an embedded pipe having a collar at the rear end portion in the propulsion direction is used, and the subsequent embedded pipe is joined by the collar.
（考案が解決しようとする課題） 前記公報に開示された埋設管では、カラーがこのカラー
を除く管本体部よりも大径となっているため、横坑と管
本体部外面との間に大きな隙間を生じることになり、地
中に形成する横坑内に埋設管を推進させている際に横坑
内の土が該横坑の底部に落下して堆積するおそれがあ
る。横坑内に土が堆積すると、その土の上に次に推進さ
れる埋設管のカラーが乗り上げ、埋設管の推進方向が上
方に変化して、所望する推進方向とは若干相違したり、
推進される埋設管が屈曲するおそれがある。また、埋設
管が敷設されると、埋設管の周囲にカラーの外径と管本
体部の外径との差に相当する大きさの間隙が存在するこ
とになり、地盤が軟弱な場合にはその間隙に相当する分
だけ地盤が沈下するおそれもある。横坑内を推進される
埋設管同士を管継手により接合する場合も、管継手が埋
設管よりも大径となっているため、同様の問題が生じ
る。(Problems to be Solved by the Invention) In the buried pipe disclosed in the above publication, since the collar has a larger diameter than the pipe main body excluding this collar, there is a large gap between the horizontal shaft and the outer surface of the pipe main body. A gap is created, and when the buried pipe is propelled in the shaft formed in the ground, the soil in the shaft may drop and accumulate at the bottom of the shaft. When soil accumulates in the side pit, the collar of the buried pipe that is next propelled on top of the soil climbs up, and the propulsion direction of the buried pipe changes upward, slightly different from the desired propulsion direction,
The buried pipe being propelled may bend. Further, when the buried pipe is laid, a gap having a size corresponding to the difference between the outer diameter of the collar and the outer diameter of the pipe main body exists around the buried pipe, and when the ground is soft, There is a possibility that the ground will subside by an amount corresponding to the gap. Even when the buried pipes propelled in the horizontal shaft are joined together by the pipe joint, the pipe joint has a larger diameter than the buried pipe, and the same problem occurs.
このような問題を解決するために、例えばヒューム管の
ような厚肉の埋設管では、カラーが外嵌される端部の外
周部を切削して、該端部に外嵌されるカラーが管本体部
の外周面より外方へ突出しないようにすることも可能で
ある。しかし、埋設管が塩化ビニル等の薄肉の合成樹脂
管であれば、カラーが外嵌される端部の外周部を切削す
る場合には、カラーに内嵌されている管本体部の端部強
度を保持するために、管の肉厚の40％程度しか切削でき
ない。従って、切削された管本体部の端部に外嵌される
カラーの肉厚は、管本体部外周面より外方へ突出させな
いようにするためには、管本体部の肉厚の40％程度とさ
れる。カラーが管本体部と同様の合成樹脂製であれば、
このような薄肉では十分な強度が得られない。このた
め、埋設管を地中に推進させる際に、カラーが破損する
おそれがある。そこで、カラーを、剛性に優れた金属等
にて構成して管本体部とは別体にすることが考えられ
る。しかし、合成樹脂製の管本体部に金属製のカラーを
外嵌した場合に、両者を短時間で液密状に接着すること
が困難であり、推進工法用埋設管としてはこのような構
成を用いることができない。In order to solve such a problem, in a thick-walled embedded pipe such as a fume pipe, for example, the outer peripheral portion of the end portion where the collar is fitted is cut and the collar fitted outside the end portion is cut. It is also possible not to project outward from the outer peripheral surface of the main body. However, if the buried pipe is a thin synthetic resin pipe such as vinyl chloride, when cutting the outer periphery of the end where the collar is fitted, the end strength of the pipe body that is fitted inside the collar is cut. In order to hold the pipe, only 40% of the wall thickness of the pipe can be cut. Therefore, the wall thickness of the collar that is fitted on the cut end of the pipe body should be about 40% of the wall thickness of the pipe body in order to prevent it from protruding outward from the outer peripheral surface of the pipe body. It is said that If the collar is made of the same synthetic resin as the tube body,
With such a thin wall, sufficient strength cannot be obtained. Therefore, the collar may be damaged when propelling the buried pipe into the ground. Therefore, it is conceivable that the collar is made of metal or the like having excellent rigidity and is separated from the tube main body. However, when a metal collar is externally fitted to the synthetic resin pipe body, it is difficult to bond the two in a liquid-tight manner in a short time. It cannot be used.
本考案は上記従来の問題を解決するものであり、その目
的は、推進工法により、地中の横坑内を推進される際に
も、横坑底面内に堆積する土により、推進方向が変化し
たり、屈曲するおそれがなく、さらには、管本体部が高
強度であって破損するおそれのない推進工法用埋設管を
提供することにある。The present invention solves the above-mentioned conventional problem, and its purpose is to change the propulsion direction by the soil accumulated in the bottom of the shaft even when it is propelled in the underground shaft by the propulsion method. Another object of the present invention is to provide a buried pipe for a propulsion method in which there is no risk of bending or bending, and moreover, the pipe body has high strength and is not damaged.
（課題を解決するための手段） 本考案の推進工法用埋設管は、地中に横坑を形成しつつ
該横坑内にそれぞれが順次推進されて推進方向に並設さ
れた一対同士が相互に接続されることにより敷設される
推進工法用の埋設管であって、管本体部の端部に管本体
部の外径よりも大きな外径の受口部またはカラーが設け
られ、受口部またはカラーを除いた管本体部の軸心方向
に連続的または断続的に延びる複数の突条が周方向に適
当な間隔をあけて配設されて、受口部またはカラーの外
径と該突条の先端が位置する外径とが、略同一径になっ
ており、そのことにより上記目的が達成される。(Means for Solving the Problem) The buried pipe for the propulsion method of the present invention forms a horizontal shaft in the ground, and while the horizontal shaft is formed in the underground shaft, each of them is sequentially propelled and a pair of them are juxtaposed in the propulsion direction. A buried pipe for a propulsion method that is laid by being connected, wherein a receiving portion or a collar having an outer diameter larger than the outer diameter of the pipe main body is provided at the end of the pipe main body. A plurality of projections extending continuously or intermittently in the axial direction of the pipe main body excluding the collar are arranged at appropriate intervals in the circumferential direction, and the outer diameter of the receiving portion or the collar and the projections. The outer diameter at which the tip of the is located is substantially the same diameter, which achieves the above object.
（実施例） 以下に本考案を実施例について説明する。(Embodiment) An embodiment of the present invention will be described below.
第１図および第２図に示すように、本考案の推進工法用
埋設管10は、例えば、塩化ビニル等の合成樹脂製であ
り、一方の端部に設けられた挿口部12と、他方の端部に
配設された受口部13と、該挿口部12および受口部13とを
除く管本体部11とを有する。そして、管本体部11の外周
面には、該管本体部11と一体的に成形された管軸方向に
延びる複数の突条14が周方向に等間隔をあけて配設され
ている。各突条14は、断面が先端になるに連れて順次先
細り状になった三角状をしており、それぞれが管本体11
外周面の軸方向全域にわたって連続している。各突条14
の先端が位置する周面の径は、該埋設管10が推進される
横坑の内径に略等しいか、若干大きくなっている。As shown in FIGS. 1 and 2, the buried pipe 10 for the propulsion method of the present invention is made of, for example, a synthetic resin such as vinyl chloride, and has an insertion opening 12 provided at one end and the other end. And a pipe main body 11 excluding the insertion portion 12 and the receiving portion 13. On the outer peripheral surface of the pipe body 11, a plurality of protrusions 14 formed integrally with the pipe body 11 and extending in the pipe axial direction are arranged at equal intervals in the circumferential direction. Each of the ridges 14 has a triangular shape in which the cross section is tapered toward the tip, and each of the ridges 14 has a tube body 11
It is continuous over the entire area of the outer peripheral surface in the axial direction. Each ridge 14
The diameter of the peripheral surface on which the tip of the embedded pipe is located is substantially equal to or slightly larger than the inner diameter of the horizontal shaft where the buried pipe 10 is propelled.
挿口部12の内径および外径は、管本体部11における各突
条14間の内径および外径にそれぞれ等しくなって、管本
体部11に連設されている。The inner diameter and the outer diameter of the insertion opening 12 are equal to the inner diameter and the outer diameter between the protrusions 14 of the pipe body 11, and are connected to the pipe body 11.
管本体部11の他方の端部に連設された受口部13の外周面
は、管本体部11外周面に連設されて端面側になるに連れ
て順次拡径したテーパー面13aを有し、該テーパー面13a
に連設された受口部13外周面は、管本体部11外周面に配
設された各突条14先端が位置する周面と面一となった同
一径になっている。該受口部13の内周は、管本体部11の
他方の端部の挿口部12の略全体が挿入し得るようになっ
ており、その内奥側端部には、挿入される挿口部12端面
が係止し得る段部が形成されている。The outer peripheral surface of the receiving portion 13 continuously provided at the other end of the pipe main body 11 has a tapered surface 13a that is continuously provided at the outer peripheral surface of the pipe main body 11 and gradually increases in diameter toward the end face side. The tapered surface 13a
The outer peripheral surface of the receiving portion 13 that is continuously provided with the same has the same diameter as that of the peripheral surface on which the tips of the protrusions 14 disposed on the outer peripheral surface of the pipe body 11 are located. The inner periphery of the receiving portion 13 is configured such that substantially the entire insertion portion 12 at the other end of the pipe main body portion 11 can be inserted. A step is formed so that the end surface of the mouth 12 can be locked.
推進工法による埋設管の敷設は次のとおりである。ま
ず、第３図に示すように、埋設管10を敷設すべき地点間
に立坑30を形成し、一方の立坑30内にジャッキ等の推進
機を配設する。このような状態で、内部に掘削カッター
41が配設された先導管43を立坑30から地中に水平状に埋
入し、該先導管43に、埋設管10の一方の端部の挿口部12
を嵌合させる。The laying of buried pipes by the propulsion method is as follows. First, as shown in FIG. 3, a vertical shaft 30 is formed between points where the buried pipe 10 is to be laid, and a propulsion device such as a jack is arranged in one vertical shaft 30. In this state, drilling cutter inside
The front conduit 43 in which the 41 is disposed is horizontally embedded in the ground from the vertical shaft 30, and the insertion port 12 at one end of the buried pipe 10 is inserted into the front conduit 43.
Fit.
ついで、該埋設管10の他方の端部に配設された受口部13
を、推進機（図示せず）に連結する。Then, the receiving portion 13 disposed at the other end of the buried pipe 10.
Is connected to a propulsion device (not shown).
このような状態で、掘削カッター41を動作させると共
に、推進機により先導管43全体を地中に押し込む。掘削
カッター41は地中を掘削して横坑を形成し、推進機は形
成された横坑内に、先導管40を押し込む。先導管43が押
し込まれると、その先導管43に内挿嵌合された埋設管10
も押し込まれることになる。掘削カッター41にて掘削さ
れた土は、埋設管10内のスクリューコンベア42により、
立坑30内へ排出される。横坑内を推進される埋設管10
は、管本体部11外周面に形成された各突条14の先端部が
横坑内周面に摺接する。In this state, the excavation cutter 41 is operated and the propulsion device pushes the entire tip conduit 43 into the ground. The excavation cutter 41 excavates the underground to form a side pit, and the propulsion unit pushes the leading conduit 40 into the formed side pit. When the front conduit 43 is pushed in, the buried pipe 10 inserted and fitted in the front conduit 43 is inserted.
Will also be pushed. The soil excavated by the excavation cutter 41, by the screw conveyor 42 in the buried pipe 10,
It is discharged into the vertical shaft 30. Buried pipe 10 propelled in a horizontal shaft
The front end of each protrusion 14 formed on the outer peripheral surface of the pipe body 11 is in sliding contact with the inner peripheral surface of the horizontal shaft.
横坑内を埋設管10が推進する際に、該横坑内面の土砂が
崩壊して、管本体部11外周面との間に形成された間隙へ
落下するが、その土砂は横坑内周面に先端部が摺接され
た各突条14に阻止され、横坑内の底面にまで落下して堆
積するおそれがない。When the buried pipe 10 is propelled in the horizontal shaft, the earth and sand on the inner surface of the horizontal shaft collapses and falls into the gap formed between the outer peripheral surface of the pipe body 11 and the earth and sand on the inner peripheral surface of the horizontal shaft. There is no risk of the tip end being blocked by each of the ridges 14 with which the sliding contact is made, and falling down to the bottom surface in the side pit and accumulating.
埋設管10が、後端部の受口部13を残して横坑内へ挿入さ
れると、該受口部13内に、横坑内に推進された埋設管10
と同形状をした後続の埋設管10における挿口部12が挿入
されて接合される。このとき、先行の埋設管10の受口部
13と、該受口部13内に嵌入された後続の埋設管10の挿口
部12とは接着剤にて液密に接着される。そして、後続の
埋設管10が推進機にて横坑内へ順次押し込まれ、該横坑
内を推進される。以下、同様にして、埋設管10同士が接
合されて、横坑内を推進され、所定の長さにわたって埋
設管が敷設される。When the buried pipe 10 is inserted into the horizontal shaft leaving the receiving end portion 13 at the rear end, the embedded pipe 10 propelled in the horizontal shaft inside the receiving pipe portion 13.
The insertion portion 12 of the subsequent embedded pipe 10 having the same shape as the above is inserted and joined. At this time, the receiving part of the preceding buried pipe 10
13 and the insertion opening 12 of the subsequent embedded pipe 10 fitted in the receiving opening 13 are liquid-tightly bonded with an adhesive. Then, the subsequent buried pipes 10 are sequentially pushed into the horizontal shaft by the propulsion device and propelled in the horizontal shaft. Hereinafter, similarly, the buried pipes 10 are joined together, propelled in the horizontal shaft, and the buried pipe is laid over a predetermined length.
埋設管10における管本体部11外周面に配設された各突条
14の断面形状は、三角形に限定されるものではなく、例
えば、第４図に示すように、断面円形状であってもよ
い。また、断面四角形、半円形状、中空の円形状等であ
ってもよい。Each ridge arranged on the outer peripheral surface of the pipe body 11 of the buried pipe 10.
The cross-sectional shape of 14 is not limited to a triangle, and may be circular in cross section as shown in FIG. 4, for example. Further, it may have a rectangular cross section, a semicircular shape, a hollow circular shape, or the like.
各突条14は、管本体部の全周に配設される必要はなく、
少なくとも下半分にのみ配設されていればよい。さら
に、各突条14は、管本体部11外周面の軸方向全域にわた
って連続している必要はなく、例えば、管本体部11の中
程にて周方向にずれた断続状態で該管本体部11外周面の
軸方向全域にわたっていてもよい。また、各突条14は、
管本体部11と同材質で一体的に成形されている必要はな
く、例えば、ガラス繊維強化プラスチック製の管本体部
11に対して、該管本体部11とは異なる材質の突条14を、
管本体部11外周面に接着等により取り付けるようにして
もよい。Each ridge 14 does not need to be arranged all around the pipe body,
It suffices if it is provided only in at least the lower half. Furthermore, each ridge 14 need not be continuous over the entire axial direction of the outer peripheral surface of the pipe main body 11, and for example, the pipe main body 11 may be discontinuous in the circumferential direction in the middle of the pipe main body 11. 11 It may extend over the entire area of the outer peripheral surface in the axial direction. Also, each ridge 14
It does not have to be integrally molded with the same material as the tube main body 11, and for example, the tube main body made of glass fiber reinforced plastic.
11, a ridge 14 made of a material different from that of the pipe body 11,
It may be attached to the outer peripheral surface of the pipe body 11 by adhesion or the like.
さらに、本考案の埋設管は、上記実施例のように、管本
体部11の一方の端部に挿口部12、他方の端部に受口部13
が配設された構成に限らず、第５図に示すように、管本
体部11の両端部にそれぞれ挿口部12および12が配設され
た構成であってもよい。この場合には、埋設管10同士の
接合には、第５図に示すように、埋設管10とは別体にな
った円筒状のカラー20が使用される。該カラー20は、管
本体部11外周面に配設された各突条14先端が位置する周
面の径と略同一の外径を有しており、また、その内径
は、埋設管10における各挿口部12が挿入されるように、
該挿口部12内径と略同径か若干大きくなっている。該カ
ラー20の軸方向長さは、各開口部からそれぞれ挿口部12
が挿入されてその中央部にて突き合わされた際に、各挿
口部12の一部が該カラー20外に位置するように設定され
ている。Further, the buried pipe of the present invention has the insertion portion 12 at one end of the pipe body 11 and the receiving portion 13 at the other end as in the above embodiment.
The configuration is not limited to the configuration in which the insertion holes 12 and 12 are provided at both ends of the tube body 11 as shown in FIG. In this case, as shown in FIG. 5, a cylindrical collar 20 separate from the buried pipe 10 is used to join the buried pipes 10 to each other. The collar 20 has an outer diameter substantially the same as the diameter of the peripheral surface on which the tips of the protrusions 14 arranged on the outer peripheral surface of the pipe body 11 are located, and the inner diameter of the collar 20 is the same as that of the embedded pipe 10. As each insertion part 12 is inserted,
The diameter is substantially the same as or slightly larger than the inner diameter of the insertion port 12. The length of the collar 20 in the axial direction is calculated from the openings to the insertion openings 12 respectively.
It is set so that a part of each insertion opening 12 is located outside the collar 20 when the is inserted and abutted at the center thereof.
このような構成の埋設管の場合にも、上記実施例と同様
に、先行の埋設管10を横坑内に推進させて、該先行埋設
管10後端部の挿口部12にカラー20を挿入して接合させ、
その後に後続の埋設管10の挿口部12を接合する。カラー
20は埋設管10の後端部に予め嵌合して接着しておいても
よい。Also in the case of the buried pipe having such a configuration, similarly to the above-mentioned embodiment, the preceding buried pipe 10 is propelled into the shaft, and the collar 20 is inserted into the insertion opening 12 of the rear end of the preceding buried pipe 10. And join them,
After that, the insertion portion 12 of the subsequent buried pipe 10 is joined. Color
20 may be fitted and bonded to the rear end of the buried pipe 10 in advance.
以上、埋設管の実施例として合成樹脂からなるものにつ
いて説明したが、本考案の埋設管は合成樹脂製のものに
限定されることはなく、例えば鋳鉄製やコンクリート製
等の埋設管であってもよい。As described above, the buried pipe made of synthetic resin has been described as an example, but the buried pipe of the present invention is not limited to the synthetic resin, and may be made of cast iron, concrete, or the like. Good.
（考案の効果） 本考案の推進工法用埋設管は、このように、管本体部の
少なくとも下部に、外方へ突出する軸方向に延びる多数
の突条が周方向に適当な間隔をあけて設けられているた
め、埋設管が横坑内に推進される際に、横坑内周面の土
砂が崩壊しても、各突条に阻止されて横坑内の底面にま
で落下することがなくなるので、受口部もしくはカラー
が底面に堆積した土砂に乗り上げることによる埋設管の
推進方向が変位するおそれがない。しかも、管本体部は
各突条により曲げ強度および圧縮強度が優れており、推
進時に破損するおそれがない。(Effects of the Invention) In the buried pipe for propulsion method of the present invention, as described above, a large number of axially extending ridges protruding outward are provided at appropriate intervals in the circumferential direction at least in the lower portion of the pipe body. Since it is provided, when the buried pipe is propelled into the horizontal shaft, even if the earth and sand on the inner surface of the horizontal shaft collapses, it will not be blocked by each ridge and fall to the bottom of the horizontal shaft. There is no risk that the direction of propulsion of the buried pipe will change due to the receiving part or collar riding on the sediment deposited on the bottom surface. Moreover, the pipe main body is excellent in bending strength and compressive strength due to each ridge, and there is no fear of damage during propulsion.
第１図は本考案の推進工法用埋設管の一例を示す断面
図、第２図は第１図のII-II線における断面図、第３図
はその埋設管を用いた推進工法の説明図、第４図は本考
案の埋設管の他の実施例の正面図、第５図は本考案の埋
設管のさらに他の実施例の断面図である。 10……埋設管、11……管本体部、12……挿口部、13……
受口部、14……突条、20……カラー。FIG. 1 is a sectional view showing an example of a buried pipe for a propulsion method of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is an explanatory view of a propulsion method using the buried pipe. FIG. 4 is a front view of another embodiment of the buried pipe of the present invention, and FIG. 5 is a sectional view of still another embodiment of the buried pipe of the present invention. 10 …… Buried pipe, 11 …… Pipe body, 12 …… Inlet, 13 ……
Mouthpiece, 14 ...... projection, 20 ...... color.
Claims (1)
れが順次推進されて推進方向に並設された一対同士が相
互に接続されることにより敷設される推進工法用の埋設
管であって、 管本体部の端部に管本体部の外径よりも大きな外径の受
口部またはカラーが設けられ、 受口部またはカラーを除いた管本体部の軸心方向に連続
的または断続的に延びる複数の突条が周方向に適当な間
隔をあけて配設されて、 受口部またはカラーの外径と該突条の先端が位置する外
径とが、略同一径になっている推進工法用埋設管。1. A buried pipe for a propulsion method, which is constructed by forming a horizontal shaft in the ground and sequentially propelling each in the horizontal shaft, and connecting a pair of them arranged in parallel in the propulsion direction to each other. The end of the pipe body is provided with a socket or collar with an outside diameter larger than the outside diameter of the pipe body, and the socket or collar is removed continuously in the axial direction of the pipe body. Alternatively, a plurality of intermittently extending projections are arranged at appropriate intervals in the circumferential direction, and the outer diameter of the receiving portion or the collar and the outer diameter at which the tips of the projections are located are substantially the same diameter. Buried pipe for propulsion method.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989044429U JPH0738467Y2 (en) | 1989-04-14 | 1989-04-14 | Buried pipe for propulsion method |
| EP89911082A EP0390932B1 (en) | 1988-10-05 | 1989-10-05 | An underground pipe for a thrust boring method and a connecting construction of the underground pipe for the same |
| AU43387/89A AU625422B2 (en) | 1988-10-05 | 1989-10-05 | An underground pipe for a thrust boring method and a connecting construction of the underground pipe for the same |
| US07/476,448 US5104263A (en) | 1988-10-05 | 1989-10-05 | Underground pipe for a thrust boring method and a connecting construction of the underground pipe for the same |
| PCT/JP1989/001022 WO1990004082A2 (en) | 1988-10-05 | 1989-10-05 | An underground pipe for a thrust boring method and a connecting construction of the underground pipe for the same |
| DE68916636T DE68916636T2 (en) | 1988-10-05 | 1989-10-05 | UNDERGROUND PIPE FOR A PITCH DRILLING METHOD AND CONNECTING STRUCTURE OF SUCH A PIPE. |
| DK136090A DK136090A (en) | 1988-10-05 | 1990-06-01 | BACKGROUND TO A PRESSURE DRILLING METHOD AND RELATED CONNECTION CONSTRUCTION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989044429U JPH0738467Y2 (en) | 1989-04-14 | 1989-04-14 | Buried pipe for propulsion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02136195U JPH02136195U (en) | 1990-11-13 |
| JPH0738467Y2 true JPH0738467Y2 (en) | 1995-09-06 |
Family
ID=31557723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989044429U Expired - Lifetime JPH0738467Y2 (en) | 1988-10-05 | 1989-04-14 | Buried pipe for propulsion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738467Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51157913U (en) * | 1975-06-10 | 1976-12-16 | ||
| JPS5273514A (en) * | 1975-12-15 | 1977-06-20 | Taiyou Kiso Kougiyou Kk | Presssin method of hume pipe and winged hume pipe |
-
1989
- 1989-04-14 JP JP1989044429U patent/JPH0738467Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02136195U (en) | 1990-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |