JP3315813B2 - Piping installation method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first pipe (for example, a gas pipe, a water pipe or a cable protection pipe) which is buried underground and a second pipe (for example, a gas pipe or a water pipe) provided in a building. The present invention relates to a pipe installation method for installing a connection pipe for communicating and connecting a pipe and a cable sleeve.

[0002]

2. Description of the Related Art Conventionally, as a method of installing this type of pipe, a starting shaft is provided in advance in the first pipe portion, and a reaching shaft is provided in the site of the building. From inside the shaft, auger is digging laterally toward the reaching shaft, and when the tip of the auger reaches the reaching shaft, a connecting pipe is connected to the tip of the auger and drawn into the auger hole, and the inside of the shaft for reaching is reached. There was a method of connecting the connection pipe and the second pipe.

[0003]

According to the above-described conventional pipe installation method, an arrival shaft is provided in advance on a site of a building, and an auger is excavated toward the arrival shaft. However, in auger excavation, it is difficult to change course during excavation, so if there is an error in setting the excavation direction,
There is a risk that the vehicle will travel with a deviation and reach a position far from a predetermined position. As a result, excavation or auger excavation of the reaching shaft may need to be redone at a different position. In addition, even if the auger can be successfully dug into the reaching shaft provided in advance, the reaching shaft is made unnecessarily small because a person enters and performs the work of connecting the connection pipe and the second pipe. In particular, when the depth of the reaching shaft becomes large, it is necessary to secure a separate place for excavated soil, and there is a problem that work on a narrow site is limited. As described above, in any case, there is a problem that wasteful construction increases, construction efficiency decreases, and construction costs increase.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a pipe installation method capable of laying connection pipes efficiently even in a small site.

[0005]

A first characteristic means of the present invention for achieving this object is that a long propulsion body capable of propelling a curve is grounded laterally from the fluid supply pipe side to the building. During mid-propulsion, on the way, a curve is propelled upward toward a ground reaching part set in advance on the site of the building, and after the tip of the propelling body reaches the ground reaching part, The distal end portion is connected to a flexible pipe serving as the fluid suction pipe, and after pulling the flexible pipe into the ground while pulling out the propulsion body in a direction opposite to the propulsion direction, the ground reaches the ground reaching section. And said
A vertical hole for attaching the fluid suction pipe to the second pipe is dug, and the vertical hole connects the fluid suction pipe to the second pipe.

A second characteristic means of the present invention is that a long propulsion body capable of propelling a curve is laterally underground propelled from the fluid supply pipe side to the building. Curved upward toward the ground reaching part set in the above, after the tip of the propulsion body reaches the ground reaching part, the ground reaching part, the fluid suction pipe and the second pipe While digging a vertical hole for the mounting operation, a flexible pipe serving as the fluid suction pipe is connected to the tip of the propulsion body, and the flexible pipe is pulled out while pulling out the propulsion body in a direction opposite to the propulsion direction. After being drawn into the ground, the vertical hole connects the fluid suction pipe and the second pipe.

A third characteristic means of the present invention is that a long propelling body capable of curving is horizontally underground propelled from the fluid supply pipe side to the building, and in advance on the site of the building, Curve propulsion upward toward the ground reaching portion set in the above, after the tip of the propulsion body reaches below the ground reaching portion, the ground reaching portion, the fluid suction pipe and the second pipe While digging a vertical hole for mounting work with, a flexible pipe serving as the fluid suction pipe is connected to the distal end of the propulsion body exposed in the vertical hole, and the propulsion body is moved in the direction opposite to the propulsion direction. After pulling the flexible pipe into the ground while pulling out, the vertical hole connects the fluid suction pipe and the second pipe.

It is to be noted that, instead of the fluid supply pipe, a cable protection pipe for protecting an internal cable or the fluid drawing-in pipe may be used .
In place of the pipe, a cable drop-in pipe may be used in which a drop-in cable connected to the internal cable is freely connected.

Further, the fluid supply pipe, the fluid suction pipe, and the second pipe are gas pipes for gas distribution,
A gas meter pipe may be connected between the fluid suction pipe and the second pipe to start up, or the fluid supply pipe, and the fluid suction pipe, and the second pipe,
A water pipe for tap water distribution may be one in which a water meter is connected between the fluid inlet pipe and the second pipe.

[0010] Further, the cable protection tube, the cable lead-in tube, and the second pipe are electric cable protection pipes for housing and protecting an electric cable, wherein the cable lead-in pipe and the second pipe are connected to each other. It is a communication cable protection tube that communicates and starts an electric meter during startup, or the cable protection tube, and the cable lead-in tube, and the second piping is a communication cable protection tube that houses and protects a communication cable. There may be.

[0011]

According to the first characteristic means, the propulsion body is connected to the fluid
From the supply pipe side, the building is laterally underground propelled in the lateral direction, and on the way, curved upwardly toward a ground reaching part set in advance on the site of the building, and the tip of the propelling body is After reaching the reaching portion, the flow
After connecting the flexible pipe serving as the body retracting pipe and pulling the flexible pipe into the ground while pulling out the propulsion body in the direction opposite to the propulsion direction, the fluid retracting pipe is provided to the ground reaching portion. the digging vertical hole for mounting work of the second pipe, because connecting the second pipe and the fluid lead-in tube in its vertical hole, while confirming the arrival position of the propellant fluid to suit its position and
It is possible to perform the installation work of the drop pipe , and it is possible to eliminate rework of the work. In addition, the vertical hole dug in the ground reach portion can be made shallow and small enough to allow a person to put in a hand and perform pipe connection work from above, so that it can be efficiently provided in a short time, and It is possible to carry out pipe installation work even in a small site space without taking any steps. As a result, even if the propulsion accuracy was somewhat low,
Work can be speedily performed without performing useless construction such as providing a large-diameter reaching shaft, and the construction cost can be reduced.

[0012] According to the second characteristic means, a long propulsion body capable of curvilinear propulsion is laterally underground propelled from the fluid supply pipe side to the building, and is preliminarily placed on the site of the building on the way. Curve propulsion upward toward the set ground reaching part, and after the tip of the propulsion body reaches the ground reaching part, attach the fluid suction pipe and the second pipe to the ground reaching part. While digging a vertical hole for work, at the tip of the propulsion body,
After connecting the flexible pipe serving as the fluid suction pipe and pulling the flexible pipe into the ground while pulling out the propulsion body in the direction opposite to the propulsion direction, the fluid suction pipe and the second Since the pipe is connected to the pipe, the function and effect of the first aspect of the present invention can be achieved, and in addition, the length of the flexible pipe to be used can be minimized, thereby further reducing the cost. Can be achieved. That is, after digging a vertical hole, the flexible pipe is drawn into the ground, and the flexible pipe is cut in the vertical hole to perform pipe connection. A length of the flexible tube approximately equal to the depth can be saved.

According to the third characteristic means, a long propulsion body capable of curving can be propelled laterally underground from the fluid supply pipe side to the building. Curve propulsion upward toward the set ground reach, after the tip of the propulsion body reaches below the ground reach,
In the ground reaching part, a vertical hole for mounting the fluid suction pipe and the second pipe is dug, and a flexible pipe serving as the fluid suction pipe is provided at a tip end of the propulsion body exposed in the vertical hole. After pulling the flexible pipe into the ground while pulling out the propulsion body in the direction opposite to the propulsion direction, the fluid suction pipe and the second pipe are connected by the vertical hole. -In addition to being able to achieve the function and effect of the second characteristic means, it is possible to shorten the propulsion distance of the propulsion body as compared with the case where the first and second methods are used. When the flexible tube is retracted, the bending of the flexible tube can be effectively used. In other words, the flexible tube connected to the distal end of the propulsion body is bent so that the inclination posture of the flexible tube is steeper than the inclination posture of the propulsion body exposed in the vertical hole. Because it can be retracted inside, the excavation width (in the direction along the propulsion direction) of the well can be made smaller, for example, in a narrow space between a fence and a building. It becomes possible to carry out pipe installation with a ground reaching part set. Therefore, even when only a narrow reaching space can be secured, the installation work of the fluid suction pipe can be performed more speedily and more economically.

[0014]

[0015] Instead of the fluid supply tube, a cable protective tube that protects the interior cable, instead of the fluid lead-in tube,
If the drop-in cable communicated and connected with the internal cable is a cable drop-in pipe that can be freely mounted, without changing the equipment used for the above-described piping installation method, the communication path for wiring the cable from the cable protection pipe to the building can be formed. It can be installed in a simple manner.

Further, the fluid supply pipe, the fluid suction pipe, and the second pipe are gas pipes for gas distribution,
As long as the gas meter pipe is connected and started between the fluid suction pipe and the second pipe, the installation of the gas meter pipe is effectively used by the vertical hole, and the space saving is achieved. Can be installed.

The fluid supply pipe, and the fluid suction pipe,
And, if the second pipe is a water pipe for tap water distribution and connects a water meter between the fluid suction pipe and the second pipe, the vertical hole is directly used as a space for installing a water meter. It is possible to use as
Piping can be installed while saving space.

Further, the cable protection tube, the cable lead-in tube, and the second pipe are an electric cable protection pipe for housing and protecting an electric cable, wherein the cable lead-in pipe and the second pipe are connected to each other. If the electric meter is connected and started up, the installation of the electric meter pipe can be effectively used for the vertical hole, and the pipe can be installed in a space-saving state.

If the cable protection tube, the cable lead-in tube, and the second pipe are communication cable protection tubes that house and protect a communication cable, the communication cable can be drawn into the building in a small space. It can be carried out by a simple method in a state where the realization has been achieved.

[0020]

Therefore, according to the piping installation method of the present invention, it is possible to realize the installation of the connection piping in a narrow site, and it is also possible to improve the efficiency of the installation by eliminating the work rework and useless construction. The installation work can be performed, and the construction period can be shortened and the construction cost can be reduced.

[0021]

Embodiments of the present invention will be described below with reference to the drawings.

In the embodiment described here, as shown in FIGS. 1 and 2, a fluid supply pipe 1 (hereinafter simply referred to as a gas main pipe) which is an example of a first pipe A which is a trunk line buried underground is used. )
And a second pipe C (hereinafter simply referred to as an indoor gas pipe) provided in the building 2 and a fluid suction pipe 3 (hereinafter simply referred to as a gas suction pipe) which is an example of a connection pipe B for communicating and connecting the pipes. The fluid R (gas) in the gas main pipe 1 can be drawn into the building 2 by connecting and connecting the gas main pipe 1, the fluid suction pipe 3 and the second pipe C. Become. The outline of the installation method of the gas pipe is as follows: a starting shaft 4 is excavated from the upper part of the gas main pipe 1, and a propulsion body 6 is propelled underground to the building 2 side by a propulsion device 5 installed in the starting shaft 4. Then, one end of the gas suction pipe 3 is connected to the propulsion body 6 that has reached the site of the building 2 and is drawn into the ground as it is, and a gas meter pipe 7 is connected to the other end of the gas suction pipe 3 which is the end of the suction. Then, the gas meter tube 7
Is connected to the indoor gas pipe C in the building 2 and one end of the gas inlet pipe 3 is connected to the gas main pipe 1 to form a gas supply path from the gas main pipe 1 to the building 2.

The gas inlet tube 3 is formed of a flexible tube, and is specifically made of polyethylene or another resin.

The propulsion body 6 includes a plurality of propulsion pipes 8 connected to each other via a ball joint J so as to be freely bent in the longitudinal direction, and a propulsion head 9 provided at a distal end of the plurality of propulsion pipes 8. By pushing the propulsion body 6 into the ground by the propulsion device 5 with the inclined surface 9a formed at the tip of the propulsion head 9 facing a predetermined direction,
The propulsion head 9 is guided in the direction of the inclined surface 9a, and the propulsion of the curved route can be performed.

In the site of the building 2, a ground reaching unit 10 is set in advance.

Next, a specific method of installing the gas supply pipe 1 will be described.

[First Embodiment] In the pipe installation method of the first embodiment, as shown in FIG. 3A, a propulsion body 6 is laterally underground propelled from the starting shaft 4 to the building 2. On the way, the vehicle is propelled upward toward the ground reaching portion 10 (the propulsion direction is turned upward by setting the inclined surface 9a downward and propelling) to reach the ground reaching portion 10. Next, as shown in FIG. 3 (b), the gas suction pipe 3 is connected to the tip of the propulsion body 6, and the gas suction pipe 3 is pulled out while the propulsion body 6 is pulled out in the direction opposite to the propulsion direction. Pull 3 underground. After that, as shown in FIGS. 3 (c) and 3 (d), a vertical hole 11 is dug in the above-mentioned reaching portion 10, and the gas meter pipe 7 is connected to the gas inlet pipe 3 at the vertical hole 11 to start up.

According to the pipe installation method of the first embodiment, the vertical hole 11 dug in the ground reaching portion 10 is dug later in accordance with the position of the propulsion body 6 in a state where the position has been confirmed. , Compared to the method of setting up a shaft for arrival in advance,
There is no need to dig an extra wide vertical hole 11 or to dig a vertical hole again to absorb the displacement error of the propulsion body 6, eliminating the need for rework and making it possible to efficiently install pipes in a short time. As a result, even if the propulsion accuracy was somewhat low, without extra construction to compensate for it, and
The work can be speedily performed, and the construction cost can be reduced.

[Second Embodiment] In the pipe installation method of the second embodiment, as shown in FIG. 4A, the propulsion body 6 is laterally underground propelled from the starting shaft 4 to the building 2, On the way, the vehicle is curved and propelled upward toward the ground reaching portion 10 to reach the ground reaching portion 10. Next, as shown in FIG. 4 (b), a vertical hole 11 is dug in the ground reaching part 10, and the gas suction pipe 3 is connected to the tip of the propulsion body 6, so that the propulsion body 6 is propelled. The gas suction pipe 3 is drawn into the ground while being drawn in a direction opposite to the direction. Then, FIG. 4 (c) and FIG.
(D) As shown in FIG.
Is connected to the gas suction pipe 3 to start up.

According to the pipe installation method of the second embodiment, in addition to the functions and effects of the first embodiment, as shown in FIG.
After digging, the gas inlet pipe 3 is pulled into the ground, and the gas inlet pipe 3 is cut in the vertical hole 11 to cut the gas meter pipe 7.
Is connected, the length of the gas suction pipe 3 to be used can be reduced to a necessary minimum, and the length which is almost equal to the depth of the vertical hole 11 can be compared with the case of the pipe installation method of the first embodiment. It is possible to reduce the cost by reducing the amount of the gas suction pipe 3.

[Third Embodiment] In the pipe installation method of the third embodiment, as shown in FIG. 5 (a), a propulsion body 6 is laterally underground propelled from the starting shaft 4 to the building 2 as shown in FIG. On the way, the vehicle is propelled upward toward the ground reaching portion 10 so that the tip of the propulsion body 6 reaches below the ground reaching portion 10 (a depth about 10 times the outer diameter of the propulsion body 6). After that, the confirmation is performed by swelling the ground surface immediately above the propulsion body 6, as shown in FIG. 5B, a vertical hole 11 is dug in the ground reaching portion 10, and the propulsion exposed in the vertical hole 11 is formed. The gas suction pipe 3 is connected to the tip of the body 6, and the gas suction pipe 3 is drawn into the ground while pulling out the propulsion body 6 in the direction opposite to the propulsion direction (see FIG. 5C). Thereafter, as shown in FIG. 5D, the gas meter pipe 7 is connected to the gas suction pipe 3 through the vertical hole 11 and is started up.

According to the pipe installation method of the third embodiment, the first
In addition to the operation and effect of the second embodiment, the propulsion distance of the propulsion body 6 can be shortened by a distance substantially equivalent to the depth of the vertical hole 11 as compared with the case where the method is performed by the methods of the above two embodiments. In addition, the gas intake pipe 3 connected to the distal end of the propulsion body 6 is bent so that the inclination attitude of the gas intake pipe 3 is steeper than the inclination attitude of the propulsion body 6 exposed in the vertical hole 11. As a result, the excavation width (in the direction along the propulsion direction) of the vertical hole 11 can be further reduced.

[Another embodiment] Another embodiment will be described below.

<1> The fluid supply pipe 1 is not limited to the gas supply pipe described in the above embodiment. For example, the fluid supply pipe 1 may be a water supply pipe, a fuel supply pipe, a sewer pipe, or the like. They may be collectively referred to as a fluid supply pipe.

<2> Therefore, the fluid R in the fluid supply pipe 1
In addition to gas, water, fuel (a gas or liquid state) or sewage may be used, and these are collectively referred to as fluid.

<3> The fluid suction pipe 3 connected to the fluid supply pipe 1 is not limited to a gas suction pipe, and is used for flowing water, fuel (in a gas or liquid state), or sewage. These are collectively referred to as fluid inlet pipes. The fluid supply pipe 1, the fluid suction pipe 3, and the second pipe C
FIG. 6 shows a state of installation of pipes in the case where is a water pipe for water distribution. As shown in the figure, a water meter 12 is buried in a vertical hole 11 in place of the gas meter pipe 7 described in the previous embodiment.

<4> The first pipe A is not limited to the fluid supply pipe 1 described in the above embodiment or another embodiment. For example, as shown in FIG. May be a cable protection tube 13 that protects the inside of the cable S, and these are collectively referred to as a first pipe.

<5> The connection pipe B is not limited to the fluid suction pipe 3 described in the previous embodiment or another embodiment. For example, as shown in FIG. The inside cable S1 connected to the inside cable S1 may be a cable inside pipe 14 which can be freely housed, and these are collectively referred to as connection pipe B. in this case,
A flexible corrugated pipe (for example, made of vinyl chloride) may be used for the cable inlet pipe 14. The cables S1 and S2 are the electric cables 15
In the case of, as shown in the figure, an electric meter 16 is connected between the cable inlet pipe 14 and the second pipe C in the vertical hole 11 instead of the gas meter pipe 7 of the previous embodiment. It is preferable to start up.

<6> As described in the previous embodiment, the propulsion method of the propulsion body 6 is performed by providing the starting shaft 4 in advance and installing the propulsion device 5 in the starting shaft. The propulsion device 5 is not limited to the above, and for example, as shown in FIG.
From this position, the propulsion body 6 is propelled so as to pass near the gas main pipe 1, and after the gas suction pipe 3 is retracted, the two are connected to the intersection of the gas main pipe 1 and the gas suction pipe 3. According to the method of digging the shaft P of the
It is possible to carry out the construction without maintaining the shaft for a long period of time.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing the installation status of a gas suction pipe.

FIG. 2 is an explanatory view showing the installation status of a gas suction pipe.

FIG. 3 is an explanatory view showing an installation state of a gas suction pipe according to the first embodiment.

FIG. 4 is an explanatory view showing an installation state of a gas suction pipe according to a second embodiment.

FIG. 5 is an explanatory view showing an installation state of a gas suction pipe according to a third embodiment.

FIG. 6 is an explanatory view showing the installation status of a water pipe according to another embodiment.

FIG. 7 is an explanatory view showing an installation state of a cable service pipe according to another embodiment.

FIG. 8 is an explanatory view showing the installation status of a pipe according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fluid supply pipe 2 Building 3 Fluid pull-in pipe 6 Propulsion body 7 Gas meter pipe 10 Reaching to ground 11 Vertical hole 12 Water meter 13 Cable protection pipe 14 Cable drop-in pipe 15 Electric cable 16 Electric meter A First pipe B Connection pipe C Second pipe R fluid S1 Internal cable S2 Drop-in cable

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Oshima 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture Inside of Kubota Technology Development Laboratory Co., Ltd. (72) Inventor Masaya Hattori 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture Inside the Kubota Technology Development Laboratory Co., Ltd. (72) Kazunori Tsujimoto 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture Inside the Kubota Technology Development Laboratory Co., Ltd. (72) Takashi Togawa 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture (56) References JP-A-4-5395 (JP, A) JP-A-2-144097 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) F16L 1/024 E03B 7/00

Claims (10)

(57) [Claims] 1. A fluid supply pipe serving as a trunk buried underground
(1) and the second pipe (C) provided in the building (2) are connected to each other to connect the fluid (R) in the fluid supply pipe (1) to the building.
A pipe installation method of installing a fluid lead-in tube (3) for pulling the (2), propellant curve propulsion freely long (6), the fluid supply tube
(1) from the side to the building (2) laterally underground propulsion,
On the way, the vehicle is curved and propelled upward toward the ground reaching part (10) set in advance on the site of the building (2), and the tip of the propelling body (6) is moved to the ground reaching part (10). after reaching the tip portion of the propellant (6), the fluid lead-in tube
(3) After connecting the flexible pipe and pulling the flexible pipe into the ground while pulling out the propulsion body (6) in the direction opposite to the propulsion direction, the ground reaching section (10) The flow
A vertical hole (11) for mounting work between the body retraction pipe (3) and the second pipe (C) is dug, and the fluid retraction is performed with the vertical hole (11).
A method of installing a pipe for connecting the pipe (3) and the second pipe (C). 2. A fluid supply pipe to be a trunk line buried underground.
(1) and the second pipe (C) provided in the building (2) are connected to each other to connect the fluid (R) in the fluid supply pipe (1) to the building.
A pipe installation method of installing a fluid lead-in tube (3) for pulling the (2), propellant curve propulsion freely long (6), the fluid supply tube
(1) from the side to the building (2) laterally underground propulsion,
On the way, the vehicle is curved and propelled upward toward the ground reaching part (10) set in advance on the site of the building (2), and the tip of the propelling body (6) is moved to the ground reaching part (10). After reaching, the fluid inlet pipe (3)
Said second pipe with digging vertical hole (11) for mounting work of (C), and the tip portion of the propellant (6), said fluid argument and
Connecting the flexible pipes serving as the pipes (3) ,
After draw the flexible tube in the ground to the propulsion direction while pulling in the opposite direction, the fluid lead-in said vertical hole (11)
A method of installing a pipe for connecting the pipe (3) and the second pipe (C). 3. A fluid supply pipe serving as a trunk buried underground
(1) and the second pipe (C) provided in the building (2) are connected to each other to connect the fluid ( R) in the fluid supply pipe (1 ) to the building.
A pipe installation method of installing a fluid lead-in tube (3) for pulling the (2), propellant curve propulsion freely long (6), the fluid supply tube
(1) from the side to the building (2) laterally underground propulsion,
On the way, a curve is propelled upward toward a ground reaching part (10) set in advance on the site of the building (2), and a tip end of the propelling body (6) is moved toward the ground reaching part (10). After reaching the lower part, the above-mentioned fluid inlet pipe is
A vertical hole (1) for mounting work between (3) and the second pipe (C).
1) While digging, a flexible pipe serving as the fluid suction pipe (3) is connected to the tip of the propulsion body (6) exposed in the vertical hole (11), and the propulsion body (6) is connected. After pulling the flexible pipe into the ground while pulling it out in the direction opposite to the propulsion direction, installing a pipe connecting the fluid suction pipe (3) and the second pipe (C) at the vertical hole (11). Method. 4. An interior cable which is a trunk line buried underground.
Cable protection tube (13) to protect the cable (S1) and the building
The second pipe (C) provided in (2) is communicated and connected with the second pipe (C).
Drop-in cable connected to the interior cable (S1)
(S2) Install a cable inlet pipe (14) that can be freely installed inside.
Pipe installation method, A long propulsion body (6) capable of propelling a curve is attached to the cable
Underground propulsion in the lateral direction from the protection pipe (13) side to the building (2)
On the way, it is set in the site of the building (2) in advance.
Curving upward toward the ground reaching point (10)
The tip of the propelling body (6) is connected to the ground reaching part (10).
After reaching, the cable is attached to the tip of the propulsion body (6).
A flexible pipe serving as a retracting pipe (14) is connected to the propelling body.
(6) While pulling out in the direction opposite to the propulsion direction,
After the sex tube is pulled into the ground, the above-mentioned reaching part (10)
The cable inlet pipe (14) and the second pipe (C)
Dig a vertical hole (11) for mounting work with
1) the cable inlet pipe (14) and the second pipe
(C) The installation method of the pipe which connects. 5. An interior cable which is a trunk line buried underground.
Cable protection tube (13) to protect the cable (S1) and the building
The second pipe (C) provided in (2) is communicated and connected with the second pipe (C).
Drop-in cable connected to the interior cable (S1)
(S2) Install a cable inlet pipe (14) that can be freely installed inside.
Pipe installation method, A long propulsion body (6) capable of propelling a curve is attached to the cable
From the protection pipe (13) side Underground promotion to the building (2) laterally
On the way, it is set in the site of the building (2) in advance.
Curving upward toward the ground reaching point (10)
The tip of the propelling body (6) is connected to the ground reaching part (10).
After reaching, the cable pull is connected to the ground reaching section (10).
Vertical for mounting work between the drain pipe (14) and the second pipe (C)
In addition to digging a hole (11), the tip of the propulsion body (6)
And a flexible tube serving as the cable lead-in tube (14).
And pulls out the propulsion body (6) in the direction opposite to the propulsion direction.
While pulling the flexible tube into the ground,
(11) the cable inlet pipe (14) and the second pipe
(C) The installation method of the pipe which connects. 6. An interior cable which is a trunk line buried underground.
Cable protection tube (13) to protect the cable (S1) and the building
The second pipe (C) provided in (2) is communicated and connected with the second pipe (C).
Drop-in cable connected to the interior cable (S1)
(S2) Install a cable inlet pipe (14) that can be freely installed inside.
Pipe installation method, A long propulsion body (6) capable of propelling a curve is attached to the cable
Underground propulsion in the lateral direction from the protection pipe (13) side to the building (2)
On the way, it is set in advance on the site of the building (2).
Curving upward toward the ground reaching point (10)
The tip of the propelling body (6) is located on the ground reaching part (10).
After reaching down, the above-mentioned cable
Attachment work between the pull-in pipe (14) and the second pipe (C)
And dig a vertical hole (11) for
At the exposed end of the propulsion body (6),
Connecting the flexible pipe which is to be the
(6) While pulling out in the direction opposite to the propulsion direction,
After pulling the sex tube into the ground, the vertical hole (11)
Cable connecting pipe (14) and the second pipe (C).
How to install piping. 7. The fluid supply pipe (1), the fluid suction pipe (3), and the second pipe (C) are gas pipes for gas flow, and the fluid suction pipe (3) and the second pipe (C). The pipe installation method according to any one of claims 1 to 3 , wherein the gas meter pipe (7) is connected to and connected to the pipe (C) to start up. 8. The fluid supply pipe (1), the fluid suction pipe (3), and the second pipe (C) are water pipes for water distribution, and the fluid suction pipe (3) and the second pipe (C). It claims 1 to 3, communicated with the water meter (12) between C)
The installation method of the piping according to any one of the above. 9. The cable protection tube (13), the cable lead-in tube (14) and the second pipe (C) for protecting an electric cable (15) by being installed inside the cable lead-in tube (14). ) And the second pipe (C) are connected and connected with an electric meter (16) for starting up .
7. The method for installing a pipe according to any one of items 6 to 6 . Wherein said cable protection tube (13) and the cable lead-in tube (14) and said second pipe (C) is, according to claim 4-6 is intended to protect by interior communication cable
The installation method of the piping according to any one of the above.