JP3093883B2 - Propulsion method - Google Patents
Propulsion methodInfo
- Publication number
- JP3093883B2 JP3093883B2 JP04236324A JP23632492A JP3093883B2 JP 3093883 B2 JP3093883 B2 JP 3093883B2 JP 04236324 A JP04236324 A JP 04236324A JP 23632492 A JP23632492 A JP 23632492A JP 3093883 B2 JP3093883 B2 JP 3093883B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- tube
- propulsion
- outer tube
- joined
- 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 - Fee Related
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Joints With Sleeves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、水道管，ガス管，石
油管等の埋設管を推進する推進工法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for propelling buried pipes such as water pipes, gas pipes, and oil pipes.
【０００２】[0002]
【従来の技術】例えばガス管等を地中に布設するにあた
り、近年交通事情や工事公害などの点から開削工法が困
難になってきている。このため鞘管内に本管を引き込む
工法や、日本水道鋼管協会の水道用推進鋼管を使用した
直押し工法が採用されている。2. Description of the Related Art In laying gas pipes and the like in the ground, for example, in recent years, it has become difficult to perform an excavation method in view of traffic conditions and construction pollution. For this reason, a construction method of drawing the main pipe into the sheath pipe or a direct pushing method using a water supply propulsion steel pipe of the Japan Water Pipe Association has been adopted.
【０００３】鞘管内に本管を引込む工法は、発進立坑と
到達立坑の間に鋼管やヒュ−ム管等の鞘管を推進させ、
この鞘管内に本管を発進立坑で順次溶接により接続しな
がら引き込む工法である。A method of drawing a main pipe into a sheath pipe is to promote a sheath pipe such as a steel pipe or a hume pipe between a starting shaft and a reaching shaft.
In this method, the main pipe is drawn into the sheath pipe while being sequentially connected by welding at a starting shaft.
【０００４】また、鋼管の直押し工法に使用する日本水
道鋼管協会の水道用推進鋼管７０は、図７の断面図に示
すように、本管７１と、本管７１より一定長さ短い外装
管７２との間にモルタル７３を充填したものである。そ
して本管７１に推進力を加えて本管７１と外装管７２を
同時に推進する。所定距離推進した後に、図８の継手部
の部分断面図に示すように、本管７１を接合してから、
本管７１の接合部に断熱材７５と鉄板７６を巻回す。そ
の後、外装管７２の間に二つ割りの鋼管である継ぎ輪７
７を接合して、再び本管７１に推進力を加えて推進して
いる。Further, as shown in a sectional view of FIG. 7, a main pipe 71 and an outer pipe shorter than the main pipe 71 by a certain length are used for a water supply propulsion steel pipe 70 of the Japan Water Pipe Association, which is used for a steel pipe direct pushing method. The mortar 73 is filled between the mortar 73 and the mortar 73. Then, a propulsive force is applied to the main pipe 71 to simultaneously propel the main pipe 71 and the outer pipe 72. After propulsion for a predetermined distance, as shown in a partial cross-sectional view of the joint portion in FIG.
A heat insulating material 75 and an iron plate 76 are wound around the joint of the main pipe 71. Then, the connecting ring 7 which is a two-piece steel pipe is provided between the outer pipes 72.
7, and the propulsion force is again applied to the main pipe 71 for propulsion.
【０００５】[0005]
【発明が解決しようとする課題】上記鞘管を推進させて
本管を引き込む工法においては、通常本管の径よりも２
ランク大きい鞘管を推進させており、例えば呼び径が30
0mmの本管を引き込むときには呼び径が500mmの鞘管を推
進させている。このため大きな推進力が必要であり、駆
動装置等が大型になるとともに施工が容易でなかった。In the method of pulling the main pipe by propelling the sheath pipe, the diameter of the main pipe is usually larger than that of the main pipe by two times.
Promoting a sheath tube with a large rank, for example, with a nominal diameter of 30
When pulling in a 0mm main pipe, a sheath pipe with a nominal diameter of 500mm is being propelled. For this reason, a large propulsion force is required, the driving device and the like become large, and the construction is not easy.
【０００６】水道用推進鋼管７０を使用する場合には径
が大きい鞘管を使用する必要はないが、推進鋼管７０を
製作するときに、本管７１と外装管７２の隙間にモルタ
ル７３を充填する必要があり、推進鋼管７０が高価にな
ってしまう。また、推進鋼管７０を接続するときに、本
管７１の接合以外に外装管７２と継ぎ輪７７とを接合す
る必要があり、接合時間や手間が多くかかるり施工費用
が高価になってしまう。When the propulsion steel pipe 70 is used, it is not necessary to use a sheath pipe having a large diameter. However, when manufacturing the propulsion steel pipe 70, the gap between the main pipe 71 and the outer pipe 72 is filled with mortar 73. And the propulsion steel pipe 70 becomes expensive. In addition, when connecting the propulsion steel pipe 70, it is necessary to join the outer pipe 72 and the connecting ring 77 in addition to the joining of the main pipe 71, so that the joining time and labor are increased, and the construction cost is increased.
【０００７】また、上記いずれの工法においても長距離
を施工する場合には、管体の途中に中押し装置を設け、
元押し推進力を中押し装置で分割して推進する中押し工
法が採用されている。このように推進管路の途中に中押
し装置がセットされているため小口径管では作業が困難
であり、1000mm以上の呼び径の鞘管や外装管を必要とす
るという短所があった。[0007] In any of the above construction methods, when a long distance is to be constructed, an intermediate pressing device is provided in the middle of the pipe body,
An intermediate pushing method is used in which the original pushing propulsion force is divided and pushed by an intermediate pushing device. As described above, since the intermediate pushing device is set in the middle of the propulsion pipeline, it is difficult to work with a small-diameter pipe, and there is a disadvantage that a sheath pipe or an outer pipe having a nominal diameter of 1000 mm or more is required.
【０００８】この発明はかかる短所を解決するためにな
されたものであり、管体を低価格で製作することができ
るとともに小口径管でも長距離に推進することができる
二重鋼管の推進工法を提供することを目的とするもので
ある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages, and it is possible to manufacture a tube at low cost and to promote a small-diameter tube over a long distance.
It is intended to provide a double steel pipe propulsion method .
【０００９】[0009]
【課題を解決するための手段】この発明に係る推進工法
は、外管と、外周面に複数の摺動部材を取り付け、外管
に対して摺動自在に挿入された内管とを有する推進鋼管
を使用した推進工法であって、発進立坑内で連結する推
進鋼管の外管を後退させて内管を前段の内管に接合した
後、外管を前進させて前段の外管に接合し、外管に外管
推進手段で推進力を加えて推進することを特徴とする。A propulsion method according to the present invention
Attach an outer tube and a plurality of sliding members to the outer peripheral surface,
Steel pipe having an inner pipe slidably inserted with respect to
This is a propulsion method using
The outer pipe of the advanced steel pipe was retracted and the inner pipe was joined to the previous inner pipe
After that, the outer tube is advanced and joined to the previous outer tube, and the outer tube is
It is characterized in that it is propelled by adding propulsion by propulsion means .
【００１０】上記推進鋼管を推進するときに、外管と、
外周面には複数の摺動部材が取り付けられ、外管に対し
て摺動自在に挿入された内管と、外管の一方の先端内面
に接合され、外管の端部から一定長さ突出して連結する
推進鋼管の外管の内周面に係合するシ−ル管とを有する
中押し管を使用し、発進立坑内で中押し管の外管を後退
させて中押し管の内管を前段の内管に接合した後、中押
し管の外管を前進させて前段の外管に突き当てて中押し
部を形成し、内管の後端部と外管の後端部とに交互に推
進力を加えて推進することを特徴とする。 When propelling the propelled steel pipe, an outer pipe is
Multiple sliding members are attached to the outer peripheral surface,
Inner tube inserted slidably and one end inner surface of outer tube
And protrude from the end of the outer tube by a certain length and connect
A sealing pipe engaged with the inner peripheral surface of the outer pipe of the propulsion steel pipe
Using the middle-pushed pipe, retreat the outer pipe of the middle-pushed pipe in the starting shaft
After joining the inner tube of the center-pushed tube to the inner tube of the previous stage,
Push the outer tube of the pipe to the front and press it
And alternately protrude between the rear end of the inner tube and the rear end of the outer tube.
It is characterized by being promoted by adding energy .
【００１１】[0011]
【００１２】[0012]
【作用】この発明においては、推進鋼管を外管と、摺動
部材を介して外管に摺動自在に挿入された内管とで構成
し、その構造を単純化する。In the present invention, the propulsion steel pipe is composed of an outer pipe and an inner pipe slidably inserted into the outer pipe via a sliding member, thereby simplifying the structure.
【００１３】この推進鋼管を接合するときは、接合する
外管を後退させて内管を接合し、その後、接合する外管
を前進して外管を接合する。このようにして順次接合さ
れた推進鋼管の外管に推進力を加えて推進する。When joining the propulsion steel pipe, the outer pipe to be joined is retracted to join the inner pipe, and then the outer pipe to be joined is advanced to join the outer pipe. A propulsion force is applied to the outer pipe of the propulsion steel pipe which is sequentially joined in this way to propell.
【００１４】中押しを使用するときは、中押し部の一方
の外管の端部内面にシ−ル管を固定し、内管を接合した
後に、中押し部の外管の端部を突き当てる。そして内管
に推進力を加えて中押し部の後段の外管内面と摺動させ
ながら一定距離推進させる。一定距離推進した後、中押
し部の後段の外管に推進力を加えて一定距離推進する。
この内管と外管の推進を交互に繰り返して管体を布設す
る。When using the middle press, the seal pipe is fixed to the inner surface of one end of the outer pipe of the middle press section, and after joining the inner pipe, the end of the outer pipe of the middle press section is abutted. Then, a propulsive force is applied to the inner pipe, and the inner pipe is propelled by a certain distance while sliding against the inner surface of the outer pipe at the subsequent stage. After propulsion for a certain distance, a propulsion force is applied to the outer tube at the subsequent stage of the middle-pushed portion to propel the motor for a certain distance.
The pipe is laid by alternately repeating the propulsion of the inner pipe and the outer pipe.
【００１５】この内管と外管を交互に推進するときある
いは布設後に、中押し部の前段の外管と後段の外管との
間隙をシ−ル管でシ−ルして管内部に水や土砂が入るこ
とを防ぐ。When the inner pipe and the outer pipe are alternately propelled or laid, the gap between the outer pipe at the former stage and the outer pipe at the later stage of the middle pressing part is sealed with a seal pipe, and water or the like is filled in the pipe. Prevent sediment from entering.
【００１６】[0016]
【実施例】図１はこの発明の一実施例に係る推進鋼管を
示す断面図である。図に示すように、推進鋼管１は外管
２と、外管２と同じ長さの内管３とを有する。内管３の
外周面には複数の摺動部材４が取り付けられ、外管２に
対して摺動自在に挿入されている。このように内管３の
外周面に複数の摺動部材４を取付て外管２内に挿入する
だけで推進鋼管１を形成することができるから、推進鋼
管１を簡単に製造することができる。1 is a sectional view showing a propulsion steel pipe according to one embodiment of the present invention. As shown in the figure, the propulsion steel pipe 1 has an outer pipe 2 and an inner pipe 3 having the same length as the outer pipe 2. A plurality of sliding members 4 are attached to the outer peripheral surface of the inner tube 3 and are slidably inserted into the outer tube 2. As described above, the propulsion steel pipe 1 can be formed simply by attaching the plurality of sliding members 4 to the outer peripheral surface of the inner pipe 3 and inserting the sliding members 4 into the outer pipe 2. .
【００１７】上記のように構成された推進鋼管１を布設
するときは、まず、図２の管体先端部を示す断面図に示
すように、発進立坑で外管２と内管３の先端部を連結部
材５に接合し、連結部材５を掘進機６に装着する。次ぎ
に外管２に推進力を加えて外管２と内管３を推進する。
外管２の長さＬに相当する長さだけ推進した後、後段の
推進鋼管１を接合してから、再び外管２に推進力を加え
て外管２と内管３を推進する。この推進管１の推進と接
合を順次繰り返す。When the propulsion steel pipe 1 constructed as described above is laid, first, as shown in a cross-sectional view showing the distal end of the tubular body in FIG. Is joined to the connecting member 5, and the connecting member 5 is mounted on the excavator 6. Next, a propulsive force is applied to the outer pipe 2 to propel the outer pipe 2 and the inner pipe 3.
After propulsion by the length L corresponding to the length L of the outer pipe 2, the propulsion steel pipe 1 at the subsequent stage is joined, and then the outer pipe 2 and the inner pipe 3 are propelled by applying a propulsive force to the outer pipe 2 again. The propulsion and joining of the propulsion pipe 1 are sequentially repeated.
【００１８】推進管１を接合するときは、図３の断面図
に示すように、連結する推進鋼管１を発進立坑７に吊り
降ろす。この推進鋼管１の内管３を固定して外管２を推
進方向Ａと反対の方向に移動し、前段の内管２に連結す
る内管２を溶接する。その後、連結する外管２を推進方
向Ａに移動して前段の外管２に溶接する。このように内
管３を溶接するときに連結する外管２を後方に移動する
ことができるから、内管３の溶接を簡単に行なうことが
できる。また、内管３と外管２のみを溶接するだけで良
く、他の介在物やその溶接を必要としないから推進鋼管
１を接合する時間を大幅に短縮することができる。When the propulsion pipe 1 is joined, the propulsion steel pipe 1 to be connected is suspended from the starting shaft 7 as shown in the sectional view of FIG. The inner pipe 3 of the propulsion steel pipe 1 is fixed, the outer pipe 2 is moved in the direction opposite to the propulsion direction A, and the inner pipe 2 connected to the inner pipe 2 at the preceding stage is welded. Thereafter, the connected outer pipe 2 is moved in the propulsion direction A and welded to the outer pipe 2 at the preceding stage. As described above, the outer pipe 2 to be connected can be moved backward when the inner pipe 3 is welded, so that the inner pipe 3 can be easily welded. Further, only the inner pipe 3 and the outer pipe 2 need to be welded, and other inclusions and welding thereof are not required, so that the time for joining the propulsion steel pipe 1 can be greatly reduced.
【００１９】このように推進鋼管１を順次接合して推進
しているときに中押しを使用するときは中押し管１ａを
使用する。中押し管１ａは、図４に示すように、内管３
が外管２の長さＬより一定長さＬ1だけ長く形成されて
いる。そして内管３の外周面には複数の摺動部材４が取
り付けられ、外管２に対して摺動自在に挿入されてい
る。外管２の先端部の内面にはシ−ル管８が接合されて
いる。このシ−ル管８は外管２の端部から長さＬ2だけ
突出し、先端外周面には、図５に示すように、連結する
外管２の内周面に係合するゴム等から形成されたリング
状のシ−ル部９を有する。このシ−ル管９の外管２から
突出した長さＬ2は内管３と外管２の長さの差Ｌ1より長
くなっている。As described above, when the propulsion steel pipes 1 are sequentially joined and propelled, when the intermediate press is used, the intermediate press pipe 1a is used. As shown in FIG.
There has long been formed by a predetermined length L 1 than the length L of the outer tube 2. A plurality of sliding members 4 are attached to the outer peripheral surface of the inner tube 3 and are slidably inserted into the outer tube 2. A seal tube 8 is joined to the inner surface of the distal end of the outer tube 2. The sheet - Le tube 8 by a length L 2 from the end portion of the outer tube 2 protrudes to the distal outer peripheral surface, as shown in FIG. 5, of rubber or the like which engages the inner peripheral surface of the outer pipe 2 for connecting It has a formed ring-shaped seal part 9. The sheet - length L 2 that projects from the outer tube 2 Le tube 9 is longer than the inner tube 3 and the difference L 1 of the length of the outer tube 2.
【００２０】この中押し管１ａを発進立坑７に吊り降ろ
す。そして上記と同様に中押し管１ａの外管２を後退さ
せて前段の内管３に中押し管１ａの内管３を溶接してか
ら、中押し管１ａの外管２を前進させて前段の外管２に
突き当てて中押し部を形成する。その後、外管２に推進
力を加えて外管２と内管３を推進し、中押し管１ａの後
段に順次推進鋼管１を接合して、図６の施工工程図の
（ａ）に示すように推進する。The intermediately pushed tube 1a is suspended from the starting shaft 7 . Then, similarly to the above, the outer tube 2 of the middle-pushed tube 1a is retracted, the inner tube 3 of the middle-pushed tube 1a is welded to the inner tube 3 of the previous stage, and then the outer tube 2 of the middle-pushed tube 1a is advanced to make the outer tube of the former stage 2 to form an intermediately pressed portion. Thereafter, a propulsive force is applied to the outer pipe 2 to propel the outer pipe 2 and the inner pipe 3, and the propulsion steel pipes 1 are sequentially joined to the subsequent stage of the middle-pushed pipe 1 a, as shown in FIG. To promote.
【００２１】この中押しを使用するときは、図６の施工
工程図の（ａ）に示すように、まず外管２の後端より突
出した内管３に推進力Ｆ1を加えて、突出した長さＬ1だ
け前進させる。この推進力Ｆ1により図６（ｂ）に示す
ように中押し管１ａ以後の内管３は外管２の内面を摺動
して前進し、中押し管１ａより前段の推進鋼管１を推進
する。この内管３の前進により中押し管１ａの外管２と
前段の推進鋼管１の外管２の間に間隙１０が生じるが、
この間隙１０はシ−ル管８でシ−ルされているから、推
進中に外管２と内管３の間に水や土砂が入ることを防ぐ
ことができる。[0021] When using this inner press, as shown in (a) of the construction process chart of FIG. 6, in addition to propulsion force F 1 to the inner tube 3 it was first projected from the rear end of the outer tube 2, projecting It is advanced by a length L 1. The inner tube 3 of the inner press tube 1a after as shown in FIG. 6 (b) by the propulsion force F 1 is advanced by sliding the inner surface of the outer tube 2, to promote the propulsion steel pipe 1 of the preceding stage from the inner press tube 1a. As the inner pipe 3 advances, a gap 10 is formed between the outer pipe 2 of the intermediately pushed pipe 1a and the outer pipe 2 of the preceding propulsion steel pipe 1,
Since the gap 10 is sealed by the seal pipe 8, it is possible to prevent water or earth and sand from entering between the outer pipe 2 and the inner pipe 3 during propulsion.
【００２２】推進力Ｆ1で一定距離推進した後、図６
（ｂ）に示すように、中押し管１ａの後段の外管２に推
進力Ｆ2を加え内管３に摺動させながら前進させ、図６
（ｃ）に示すように前段の推進鋼管１の外管２に付き当
ててから一定距離推進する。その後、再び内管３に推進
力Ｆ1を加え、上記中押しによる推進を順次繰り返す。[0022] After a certain distance promoted by thrust F 1, Fig. 6
(B), the advanced while sliding on the inner tube 3 was added propulsion F 2 to the outer tube 2 in the subsequent stage of the inner press tube 1a, FIG. 6
As shown in (c), the propulsion steel pipe 1 is propelled by a certain distance after being brought into contact with the outer pipe 2 of the propulsion steel pipe 1 at the preceding stage. Thereafter, the thrust F 1 is added to the inner tube 3 again sequentially repeated propulsion by the inner press.
【００２３】このよう内管３と、内管３に摺動する外管
２とに交互に推進力を加えて推進することにより、比較
的小さな推進力で管体を推進することができる。また、
中押し管１ａ以外に推進鋼管１の途中に中押し装置をセ
ットする必要がないから、1000mm以下の小口径管でも長
距離の施工を簡単に行なうことができる。By alternately applying a propulsive force to the inner tube 3 and the outer tube 2 sliding on the inner tube 3 for propulsion, the tube can be propelled with a relatively small propulsive force. Also,
Since it is not necessary to set an intermediate pushing device in the middle of the propulsion steel pipe 1 other than the intermediate pushing pipe 1a, long-distance construction can be easily performed even with a small diameter pipe of 1000 mm or less.
【００２４】また、上記のようにして推進した推進鋼管
１や中押し管１ａの外管２は布設後に防護管として使用
することができる。そして中押し部では外管２の間隙を
シ−ル管８でシ−ルしているから、外管２の内部に水や
土砂が入ることを防ぐことができる。The propelled steel pipe 1 propelled as described above and the outer pipe 2 of the middle-pushed pipe 1a can be used as a protective pipe after laying. Since the gap between the outer tubes 2 is sealed by the seal tube 8 in the middle pressing portion, it is possible to prevent water and earth and sand from entering the inside of the outer tube 2.
【００２５】なお、上記実施例においては中押し管１ａ
にシ−ル管８をあらかじめ接合しておいた場合について
説明したが、発進立坑で内管を溶接する前にシ−ル管８
を中押し管１ａに溶接しても良い。It should be noted that in the above embodiment, the intermediately pushed tube 1a
In the above description, the seal pipe 8 was previously joined, but before welding the inner pipe at the starting shaft, the seal pipe 8 was welded.
May be welded to the middle pressed tube 1a.
【００２６】また、中押し管１ａの内管３を外管２より
一定長さだけ長くした場合について説明したが、内管３
を外管２を同じ長さにしても内管と外管に交互に推進力
を加えることもできる。Also, the case where the inner tube 3 of the intermediately pushed tube 1a is made longer than the outer tube 2 by a certain length has been described.
It is also possible to alternately apply a propulsive force to the inner tube and the outer tube even if the outer tube 2 is the same length.
【００２７】[0027]
【発明の効果】この発明は以上説明したように、推進鋼
管を外管と、摺動部材を介して外管に摺動自在に挿入さ
れた内管とで構成したから、推進鋼管の構造を単純化す
ることができ、推進鋼管を低価格で製造することができ
る。According to the present invention, as described above, the propulsion steel pipe is constituted by the outer pipe and the inner pipe slidably inserted into the outer pipe via the sliding member. It can be simplified and the propulsion steel pipe can be manufactured at low cost.
【００２８】この推進鋼管を接合するときに、接合する
外管を後退させて内管を接合できるから、内管の溶接を
簡単に行なうことができる。また、内管と外管のみを溶
接するだけで良く、他の介在物やその溶接を必要としな
いから、推進鋼管を接合するときの溶接工数と費用を大
幅に低減することができる。When joining the propulsion steel pipe, the inner pipe can be welded easily because the outer pipe to be joined can be retracted to join the inner pipe. In addition, since only the inner pipe and the outer pipe need to be welded, and no other inclusions or welding are required, welding man-hours and cost for joining the propulsion steel pipe can be greatly reduced.
【００２９】また、推進鋼管を推進するとき内管を保護
する外管に推進力を与えて推進できるから、大口径の鞘
管を必要とせずに管体を布設することができ、小口径を
使用しても長距離の施工を簡単に行なうことができる。Further, when the propulsion steel pipe is propelled, the outer pipe for protecting the inner pipe can be propelled by applying a propulsive force, so that a pipe body can be laid without requiring a large-diameter sheath pipe, and a small-diameter pipe can be laid. Even when used, long-distance construction can be performed easily.
【００３０】中押しを使用するときは、内管と外管の推
進を交互に繰り返すことにより小さな推進力で管体を布
設することができ、長距離の施工を簡単に行なうことが
できる。When the middle press is used, the pipe can be laid with a small propulsion force by alternately repeating the propulsion of the inner pipe and the outer pipe, so that long-distance construction can be easily performed.
【００３１】この中押しを使用したときに中押し部の前
段の外管と後段の外管との間隙をシ−ル管でシ−ルして
いるから管内部に水や土砂が入ることを防ぐことができ
る。When this middle press is used, the gap between the outer tube at the front stage of the middle press portion and the outer tube at the later stage is sealed with a seal tube, so that water and earth and sand can be prevented from entering the inside of the tube. Can be.
【図１】この発明の実施例に係る推進鋼管を示す断面図
である。FIG. 1 is a sectional view showing a propulsion steel pipe according to an embodiment of the present invention.
【図２】管体の先端部を示す断面図である。FIG. 2 is a sectional view showing a distal end portion of a tubular body.
【図３】推進鋼管の連結工程を示す断面図である。FIG. 3 is a cross-sectional view showing a connecting step of the propulsion steel pipe.
【図４】中押し管を示す断面図である。FIG. 4 is a cross-sectional view showing a middle push tube.
【図５】中押し部を示す部分断面図である。FIG. 5 is a partial cross-sectional view showing a middle pressing portion.
【図６】中押しによる推進工程を示す説明図である。FIG. 6 is an explanatory diagram showing a propulsion process by middle pressing.
【図７】従来例を示す断面図である。FIG. 7 is a sectional view showing a conventional example.
【図８】従来例の継手部を示す部分断面図である。FIG. 8 is a partial cross-sectional view showing a conventional joint part.
１ 推進鋼管 １ａ 中押し管 ２ 外管 ３ 内管 ４ 摺動部材 ８ シ−ル管 ９ シ−ル部 DESCRIPTION OF SYMBOLS 1 Propulsion steel pipe 1a Middle push pipe 2 Outer pipe 3 Inner pipe 4 Sliding member 8 Seal pipe 9 Seal part
フロントページの続き (56)参考文献 特開 平３−110296（ＪＰ，Ａ) 特開 平５−321580（ＪＰ，Ａ) 特開 平５−346094（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 9/06 311 Continuation of front page (56) References JP-A-3-110296 (JP, A) JP-A-5-321580 (JP, A) JP-A-5-346094 (JP, A) (58) Fields investigated (Int) .Cl. 7 , DB name) E21D 9/06 311
Claims (2)
付け、外管に対して摺動自在に挿入された内管とを有す
る推進鋼管を使用した推進工法であって、 発進立坑内で連結する推進鋼管の外管を後退させて内管
を前段の内管に接合した後、外管を前進させて前段の外
管に接合し、外管に外管推進手段で推進力を加えて推進
することを特徴とする推進工法。 An outer tube and a plurality of sliding members are provided on an outer peripheral surface thereof.
With an inner tube slidably inserted into the outer tube
This is a propulsion method using propulsion steel pipes.
Is joined to the inner tube of the previous stage, then the outer tube is advanced to
Joined to the pipe, propelled by applying propulsion to the outer pipe with outer pipe propulsion means
A propulsion method characterized by:
管に対して摺動自在に挿入された内管と、外管の一方の
先端内面に接合され、外管の端部から一定長さ突出して
連結する推進鋼管の外管の内周面に係合するシ−ル管と
を有する中押し管を使用し、発進立坑内で中押し管の外
管を後退させて中押し管の内管を前段の内管に接合した
後、中押し管の外管を前進させて前段の外管に突き当て
て中押し部を形成し、内管の後端部と外管の後端部とに
交互に推進力を加えて推進することを特徴とする推進工
法。 2. A propulsion method according to claim 1, wherein a plurality of sliding members are attached to the outer tube and the outer peripheral surface.
One of the inner and outer tubes inserted slidably into the tube
It is joined to the inner surface of the tip and projects a certain length from the end of the outer tube.
A sealing pipe engaged with the inner peripheral surface of the outer pipe of the propulsion steel pipe to be connected;
Outside the centrally-pumped pipe in the starting shaft
The tube was retracted and the inner tube of the middle-pushed tube was joined to the previous inner tube
Afterward, advance the outer tube of the middle-pushed tube to abut the outer tube of the previous stage
To form a middle-pushed part, and to the rear end of the inner tube and the rear end of the outer tube.
Propulsion works characterized by alternate propulsion
Law.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04236324A JP3093883B2 (en) | 1992-08-13 | 1992-08-13 | Propulsion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04236324A JP3093883B2 (en) | 1992-08-13 | 1992-08-13 | Propulsion method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000248879A JP2000248879A (en) | 2000-09-12 |
| JP3093883B2 true JP3093883B2 (en) | 2000-10-03 |
Family
ID=16999121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04236324A Expired - Fee Related JP3093883B2 (en) | 1992-08-13 | 1992-08-13 | Propulsion method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3093883B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434170B (en) * | 2010-09-29 | 2013-12-25 | 上海尤加工程机械科技有限公司 | Air bag piston stretching device of pipe connecting device for slurry shield |
-
1992
- 1992-08-13 JP JP04236324A patent/JP3093883B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000248879A (en) | 2000-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3093883B2 (en) | Propulsion method | |
| JP3421793B2 (en) | Propulsion device and propulsion method | |
| JPH0236758B2 (en) | ||
| JPH102191A (en) | Pipe-jacking device | |
| JP3120017B2 (en) | Medium push structure of double steel pipe for propulsion method | |
| JP2004316810A (en) | Earthquake-proof tube propulsion construction method and propulsive force transmission device | |
| JPH0748797Y2 (en) | Buried pipe for tow burial method | |
| JP3136022B2 (en) | Pipe propulsion method and equipment | |
| JPH0252760B2 (en) | ||
| JP2719265B2 (en) | Grout method of double steel pipe for propulsion | |
| JPH06246340A (en) | Method for connecting steel tube | |
| JP3789331B2 (en) | Propulsion method and pipe joint structure used therefor | |
| JP4510314B2 (en) | Joint structure of earthquake-resistant propulsion pipe | |
| JPH023028Y2 (en) | ||
| JPH0868297A (en) | Joint construction of driving pipe for tunnel excavation | |
| JPS622396Y2 (en) | ||
| JPH06248873A (en) | Constructing method for propulsion of pipe | |
| JPS5841400B2 (en) | How to join the middle press part of propulsion steel pipe | |
| JP2719299B2 (en) | Forward conduit | |
| JPH01146097A (en) | Pipe propulsion device | |
| JPH0728464Y2 (en) | Tube for propulsion method | |
| JPS5945076B2 (en) | Propulsion method using anti-corrosion double steel pipes | |
| JPH09177473A (en) | Steel pipe for pipe roof | |
| JP4969215B2 (en) | Center push piping method | |
| JPS6347344Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |