JPS626096A - Buried pipe installing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a buried pipe stage 22 device for reinstalling an old buried pipe that has already been installed underground into a new installation.

[Conventional technology]

In general, sewer pipes, which are pipes buried underground, become old (due to ground pressure and ground subsidence, the joints of segments shift and create gaps, and due to overload due to ground pressure (earth pressure), etc.) If a part of the pipe cracks or is crushed, groundwater may enter the underground pipe or sewage from the underground pipe may leak underground.In such cases, Is it necessary to replace this underground pipe with a new one?

For this reason, a buried pipe stage 22 device as shown in FIGS. 2 and ff13 has conventionally been used. As shown in Figure 2, a starting shaft 1 is set up as a starting base, and a reaching shaft 2 is set up as a reaching base, and the old buried pipe 3 is destroyed along with the starting shaft 1 towards reaching shaft 2. While or,
A new buried pipe 5 guided by a buried pipe installation device 4 is installed through the inside of the pipe.

This buried pipe installation device 4 is entirely pencil-shaped as shown in Fig. 3, and the old buried pipe 3 is destroyed and installed in a new location.
When installing a buried pipe installation device 4, the maximum diameter of the buried pipe installation device 4 is approximately equal to the outer diameter of the new installation 5 and larger than the inner diameter of the old installation 3. In addition, a new 111 is installed inside the i73.
! When passing through the installation pipe 5, the maximum 11 of the underground pipe installation device 4
° [Use the required one whose diameter is smaller than the inner diameter of the single-buried installation 3.

Further, this 1Jll pipe installation equipment is equipped with a shackle 6 at the tip of the pipe 4 for mooring the pull wire. Further, a triangular wing plate 7 is mounted behind it so that it can be opened and closed by hydraulic operation. Furthermore, a tapered surface 8 is provided behind it for pushing out and destroying the single-buried installation 3. Moreover, the inside of this buried pipe installation equipment W14 is equipped with an air hammer or a vibration generator that applies an impact force in the direction of movement of the underground pipe in order to make it dig.

Then, the pull wire 13 is attached to the shackle 6 on the head of this buried pipe installation device 4, and this wire 13 is connected to the 1 buried pipe installation 3.
It is configured to be guided through the inner shaft to the reaching shaft 2 and wound up by a winder 15 on the ground via a shaft-like auxiliary member 14.

The buried pipe installation device 4 also includes a refueling hose for hydraulically operating the triangular wing V plate 7 from its rear end, an air supply hose for driving the air hammer, a power cord for driving the vibration generator, and a power cord for driving the vibration generator. etc. 4 letters 1i! Pull out 1G,
It is connected to a driving force generator 17 on the ground through the starting shaft 1. Furthermore, a plurality of segments of the new installation 5 such as necessary hume pipes, vinyl chloride pipes, ceramic pipes, etc. are inserted into the conductive wire 16 to prepare. When using the buried pipe installation device rL4 configured in this way, the driving force generating device 17
The power sent from the is used to open and close the triangular wing pillow plate 7, and the single-buried installation 3 is destroyed vertically, including its strong parts such as joints, and the impact force of an air hammer or the like is applied to the tapered surface 8 to destroy it. Combined with the wedge effect, the destructive action is enhanced and 1 buried 3 pieces are destroyed finely. At the same time, the winder 15 is operated to wind up the wire 13, thereby drawing the buried pipe installation device 4 toward the reaching shaft 2, and strongly pressing the finely crushed pieces of the first buried pipe 3 by the action of the tapered surface 8. In this way, excavation is performed to form a tunnel into which the new installation 5 will be inserted. Into the tunnel formed in this manner, the segments of the new installation 5 are sequentially sent in with a jack 20 to install the new installation 5. In addition, as such a buried pipe stage Fa device 4, for example, a pipeline,
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[Problem that the invention seeks to solve]

Even in a new installation configured as described above, water leakage cannot be prevented because there are seams between each segment. moreover,
When injecting lubricant or backfilling material into the outer circumference of the new installation 5 to facilitate insertion of the new installation 5 into the tunnel, the surrounding area of the new installation 5 may be used as a water path for underground water to pass through. The problem is that the injected lubricants and backfilling materials are diluted and washed away by groundwater, and the debris of destroyed old buried installations 3 forms gaps, resulting in a large amount of injected material. There is.

[Means for solving problems]

The buried pipe installation device of the present invention is compactly compressed and stored at the rear end of an excavated part for buried pipe installation, which sequentially inserts segments along one buried pipe installation to form a tunnel for installing a new installation. The present invention is characterized in that an impermeable membrane installation part is removably attached to the tunnel for installing the impermeable membrane along the inner wall of the tunnel so as to cover a new buried pipe.

[For production]

With this configuration, the new installation can be covered with an impermeable membrane to prevent water leakage, and the rear propulsion jack pressure can be reduced when sending the new installation segment into the tunnel as the underground pipe installation equipment progresses. It has the effect of making work easier, such as reducing the amount of water.

〔Example〕

Hereinafter, one embodiment of the buried pipe installation device of the present invention will be described with reference to FIG. In FIG. 1, the same reference numerals are given to the parts corresponding to the conventional apparatus shown in FIG. 2 and FIG. 3, and detailed explanation thereof will be omitted.

Fig. 1 is a schematic cross-sectional view showing the main parts of the underground pipe installation device of this example, in which an old underground pipe is destroyed and a new one with the same outer diameter is installed. This is a buried pipe installation device that is equipped with an impermeable membrane installation section. This underground pipe installation device IO equipped with an impermeable membrane installation part has an excavation part 1 for installing a buried pipe.
1, and an impermeable membrane installation part 12 detachably attached to the rear end.

This buried pipe installation excavation section 11 is constructed in the same manner as the conventional buried pipe installation device 4. The excavation unit 1 for installing buried pipes is not limited to the conventional vibrator, insurgenon, machine, etc., but also equipment that excavates the old buried pipe 3 while scraping it with a cutting blade, and buried pipe installation equipment of other configurations. Of course, you can use something similar to that.

The impermeable membrane installation section 12 has a cylindrical shape with the same outer diameter as the buried pipe installation excavation section II, and is removably attached to the rear end. The impermeable membrane 9 is stored in the impermeable membrane installation section 12 .

The material of this water-impermeable membrane 9 is preferably synthetic resin from the viewpoint of flexibility, malleability, and ductility, and preferably vinyl chloride from the viewpoint of economy. The impermeable membrane 9 is used to cover the outer periphery of the newly buried pipe 5 to prevent leakage such as infiltration of underground water, etc., and is therefore formed or processed into a cylindrical shape. Note that the thickness of this water-impermeable layer 1129 is appropriately selected and used depending on the surrounding environmental conditions and the like. The impermeable membrane 9 thus formed is
All of bellows, rolls, folding, etc. are compressed into a compact state such as a ring, and the impermeable membrane installation part 12
It can be pulled out from the rear end. When the impermeable membrane 9 in the impermeable membrane installation part 12 is used up, remove the impermeable membrane installation part 12 from the buried pipe installation excavation part 11, fill it with a new impermeable membrane 9, and install it again. It is used as

Further, in the front part of this impermeable membrane installation part 12, there is a part for injecting the backing material sent from the outside with a hose into the outside part.
At the same time, a lubricant, backing agent, etc.) is provided between the impermeable membrane 9 and the outer periphery of the new buried pipe 5).
An injection port 19 is provided for water injection.

Next, the usage and operation of the buried pipe installation device IO with an impermeable membrane installation section configured as described above will be explained.

In this buried pipe installation device 10 with an impermeable membrane installation section, the buried pipe installation excavation section II excavates the old buried pipe 3 while destroying it in the same manner as the conventional buried pipe installation device 4. That is, the triangular wing-shaped plate 7 and the air hammer, etc., which are connected to and driven by the driving force generating device 17, are operated and guided while being pulled by the wire 13, and the buried pipe installation excavation section 11 excavates to form a tunnel. At this time, the impermeable membrane 9 is pulled out from the rear end of the impermeable membrane installation section 12, and as the buried pipe installation device IO advances, the impermeable membrane 9 is installed along the inner circumference of the tunnel.

In this state, the segments of the new buried pipe 5 are successively pushed into the tunnel behind the buried pipe installation device IO using a jack 20 or the like as shown in FIG. 2 so that they are enclosed in water-impermeable water. At this time, a lubricant or backfilling material (cement, blast furnace cement, bentonite, mud oil, CMC1 high gel, super absorbent resin, etc.) is injected between the impermeable membrane 9 and the new buried pipe 5 from the injection port 19. This reduces the frictional force required to push newly installed segments into the tunnel. That is,
Since a lubricant is placed between the impermeable +120 in the tunnel and the outer periphery of the new buried pipe 5, the lubricant effect is very effective. The frictional force acting between the new j! 11 The pressure when pushing the installed pipe 5 into the tunnel with the rear propulsion jack 20 can be reduced to about one-fifth of the conventional pressure. Therefore, conventionally, if the suppression pressure of the rear propulsion jack 20 is increased unnecessarily,
Since this would destroy the newly buried pipe 5, the distance between the starting shaft 1 and the arrival shaft 2 was limited to be short in order to reduce the suppressing pressure that sends the segments of the newly buried pipe 5 into the tunnel. According to this device, since the frictional force is reduced, the distance that the segment is sent into the tunnel can be made extremely long while keeping the suppressing pressure of the rear propulsion jack 20 low. Therefore, it is possible to quickly and economically install new installations 5 without having to provide a large number of reaching shafts 2 for relaying. The propulsion jack installed in t7 can be made smaller than the conventional one.This makes the work easier and can more completely prevent water leakage after installation of the buried device t7. In this case, since it is injected between the impermeable membrane 9, the lubricant and backfilling material may be absorbed into the surrounding ground from the inner wall of the tunnel, or the entire outer periphery of the new buried pipe 5 may be absorbed by underground water or landslides. This can effectively prevent the situation where the water is not distributed evenly to the children.

Furthermore, if necessary, a backfilling material is injected between the impermeable membrane 9 and the tunnel inner wall from the injection port I8 at the front of the impermeable membrane installation part 12, and backfilling material is injected from the 113 population 19 at the rear thereof. By pouring wood and replacing it with lubricant, it is possible to prevent the surrounding ground from collapsing or subsidence. Note that the configuration, operation, and effects of this example device other than those described above are the same as those of the conventional device shown in FIGS. 2 and 3 described above.

〔Effect of the invention〕

As described above in detail, according to the buried pipe installation device of the present invention, the impermeable membrane installation part is removably installed following the rear part of the buried pipe installation excavation part. An impermeable membrane can be installed on the inner wall of the tunnel excavated while destroying the old buried pipe, and the new installation is installed inside this impermeable membrane, which prevents water from leaking from the joints of the segment, etc. When sending a new installation into a tunnel in accordance with the progress of the underground pipe installation equipment, the pressure of the rear propulsion jack can be reduced, making the work easier and the installation easier.

[Brief explanation of the drawing]

FIG. 1 is an explanatory cross-sectional view showing an embodiment of the buried pipe installation device of the present invention, FIG. 2 is an explanatory cross-sectional view showing an example of the conventional buried pipe installation device, and FIG. i3 is a perspective view thereof.

Claims (1)

[Claims] A buried pipe installation excavation part (11) that forms a tunnel in which the new buried pipe 5 is installed by sequentially inserting segments along the old buried pipe (3), and a rear end of the buried pipe installation excavation part (11). Subsequently, an impermeable membrane installation part (9) is installed along the inner wall of the tunnel so as to cover the newly buried pipe (5) with an impermeable membrane (9) compressed and stored in a compact manner that is removably installed. 12) A buried pipe installation device comprising: