JP3281166B2 - Construction method of long materials under the ground - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a plurality of juxtaposed long members underground. The present invention relates to a technology for burying and embedding a large number of long materials such as power cables, communication cables, measurement cables and the like, cable protection tubes, buried pipes for fluids, etc. in parallel by using a propulsion method. .

[0002]

2. Description of the Related Art In order to insert a large number of cables underground, there is a case where an underground cable duct such as a concrete pipe is provided underground and cables and the like are laid in the underground cable duct. In such a case, there has been a demand for a method of efficiently and efficiently laying a large number of long members in parallel under the ground.

[0003]

According to the present invention, a propulsion method is applied, a dedicated high-strength guide tube is used, the guide tube is installed underground by the propulsion method, and the guide tube is used. It is an object of the present invention to provide a method of constructing a long material having many lengths in the ground.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a propulsion system in which guide tubes provided with a large number of holes penetrating in the axial direction are sequentially connected.
Law by by construction in the ground from the starting pit to arrival pit, inserted through the elongated member to a large number of holes of the dielectric conduit, to secure the ends of the starting pit side of the long continuous material, then advancing the guide tube While before
A method of constructing an underground juxtaposed long material, characterized in that a filling material is filled into a propulsion hole from a rear end of the guide tube, and the long material is buried in the ground.

[0005] In the present invention, the long material is a hollow tube,
It can be one or more materials selected from solid materials and composite materials thereof. Also, the filler and
Then, concrete, mortar, granular material, resin or other filler may be used.

[0006]

According to the present invention, a guide tube having a large number of through holes through which a long material is inserted is used. This guide tube is exclusively used for the propulsion method from the starting shaft to the reaching shaft, and is collected and used repeatedly. Therefore, make it strong enough to have sufficient strength,
Through holes and the like can be freely provided.

According to the present invention, a guide pipe having a large number of holes penetrating in the axial direction is propelled from a starting shaft to a reaching shaft, a long material is inserted into the large number of holes, and the long material is fixed in the starting shaft. And
The guide tube is advanced to leave the long material at the trace of the propulsion hole, and the long material is buried in the ground. After reaching the reaching shaft, the guide tube is pulled from the reaching shaft side. Although the long material of the present invention is not limited, for example, the hollow tube includes a metal tube, a synthetic resin tube, a hose, a sheath, and the like, and the solid material includes various cables, rods, and ropes. , Resin wires, fiber aggregates, etc., and these composite materials are also targets.

While the guide tube is advanced, concrete, mortar, fiber, granular material, earth and sand, rock and other materials can be filled in the propulsion hole. This filling also
Since a part of the propulsion hole can be filled and a concrete pipe can be formed underground, a long material can be embedded in the wall of the underground concrete pipe in combination with the technique.

[0009]

FIG. 2 is a front view of a guide tube according to an embodiment of the present invention. The guide tube 52 has a cylindrical shape with a hollow portion 190, and has a large number of through holes 182 arranged near the circumference. The plurality of through holes 182 penetrate in parallel in the axial direction, and are through holes through which a long material, for example, a cable, a sheath, an optical fiber duct, or the like is inserted. In this example,
Mortar injection hole 180 for injecting mortar as filler
Is penetrating. Then, it adapted to advance while injecting the mortar mortar injection hole 180, shows an example capable of forming tube concrete mortar tube in the ground. The thus examples of this, holes in the long material is adapted to be embedded in the wall of the concrete pipe.

FIGS. 4 and 5 show construction steps of an embodiment of the present invention. A guide pipe 52 is connected to the tail end of the excavator 50 to propel the underground from the starting shaft 100 to the reaching shaft 102.
After the propulsion of the guide tube 52 from the starting shaft 100 to the reaching shaft 102 is completed, the excavator 50 is removed from the reaching shaft 102 so that the guiding tube 52 can be pulled from the reaching shaft side. The long material 90 is passed through the through hole of the guide pipe 52, and its end is fixed in the starting shaft. Next, the guide pipe 52 is advanced, and the long material 90 is left in the propulsion hole. FIG.
A step of sequentially advancing the guide tube 52 while filling the filler 40 is shown.

FIG. 2 shows a state in which the guide tube 52 is pushed from the starting shaft 100. An end plate 160, a mouth ring 162, and a seal ring 164 are provided at the mouth of the propulsion hole. When the guide tube 52 reaches the reaching shaft, the long material 90 is inserted into the through hole 182 of the guide tube 52, and as shown in FIG. 3, the holding ring 170 is attached in the starting shaft 100 to hold the long material 90. It is fixed to the ring 170 with the fixing piece 92. Next, when the guide tube 52 is advanced, the long material 90
Is left at the propulsion mark of the guide tube 52 as shown in FIG. The filler 40, for example, an early-strength mortar is injected into the propulsion trace from the mortar injection pipe 106 through the mortar injection hole 180. After the curing, the guide tube 52 is advanced. In this way, a large number of long members arranged in parallel can be easily buried in the ground.

[0012]

According to the present invention, a large number of through-holes are provided in a high-rigidity guide tube dedicated to propulsion, through which long materials are inserted. When reaching from the starting shaft to the reaching shaft, insert a long material into the through hole of the guide tube, fix the end of the starting shaft side, advance the guide tube, and fill the propulsion mark with filling material Many long members can be easily installed underground.

[Brief description of the drawings]

FIG. 1 is a front view of a guide tube.

FIG. 2 is an explanatory diagram of a guide tube pushing step in a starting shaft.

FIG. 3 is an explanatory view after completion of guide tube propulsion in a starting shaft.

FIG. 4 is an explanatory diagram of a guide tube propulsion process of the present invention.

FIG. 5 is an explanatory diagram of a guide tube propulsion process of the present invention.

[Explanation of symbols]

 Reference Signs List 40 filler 50 excavator 52 guide tube 90 long material 100 starting shaft 102 reaching shaft 160 end plate 162 mouth ring 164 seal ring 170 retaining ring 180 mortar injection hole 182 through hole 190 hollow portion

────────────────────────────────────────────────── ─── Continuing on the front page (72) Minoru Kurakura 1-7-7 Suehirocho, Tsurumi-ku, Yokohama-shi Inside the Tokyo Gas Co., Ltd. Pipe Technology Center (72) Inventor Kei Katahira Matsuzaki-cho, Abeno-ku, Osaka-shi 2-2-2, Okumura Gumi Co., Ltd. (56) References JP-A-4-210183 (JP, A) JP-B-4-38279 (JP, B2) (58) Fields surveyed (Int. Cl. ⁷ , (DB name) F16L 1/024 F16L 1/00

Claims (2)

(57) [Claims] 1. A guide pipe having a large number of holes penetrating in an axial direction is sequentially connected and constructed underground from a starting shaft to a reaching shaft by a propulsion method, and a long material is inserted into the many holes of the guiding tube. Insert and fix the end of the long material on the starting shaft side, and then advance from the rear end of the guide tube while advancing the guide tube.
A method for constructing an underground juxtaposed long material, characterized by filling a hole with a filler and burying the long material in the ground. 2. The underground juxtaposition according to claim 1, wherein the long material is one or more materials selected from a hollow tube, a solid material, and a composite material thereof. Construction method of long material.