JP4136294B2 - Drainage pipe repair device and drainage pipe repair method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, for example, a plurality of pipe bodies that guide sewage, rainwater, and the like are buried in the ground along the arrangement path, and a hand hole, a manhole, and the like for connecting the pipe bodies to each other along the arrangement path are provided. The present invention relates to a drainage pipe repair device and a drainage pipe repair method for repairing the tubular body in a drainage pipe structure provided with a connecting portion.
[0002]
[Prior art]
The pipe body is buried in the soil and used for drainage, so it requires a certain level of strength and has a structure that guides water. As a relatively inexpensive one, conventionally, a concrete one has been used as a drainage pipe, and the following inconveniences have occurred.
[0003]
[Problems to be solved by the invention]
In other words, if the tube is made of concrete as described above, the inner surface may be scraped by contact with water flowing in the tube, or the outer surface may contact with water or the like existing in the soil, causing an aging phenomenon. In response to vibrations caused by earthquakes, etc., a part of the pipe is cracked or cracked, resulting in a decrease in the water tightness of the pipe, resulting in inconvenience that the guide function by the pipe is reduced or eliminated. Was.
Therefore, in order to repair the tubular body, for example, while feeding the belt-like member in a spiral shape, the both ends in the width direction of the adjacent belt-like members are fitted with a self-propelled pipe making machine, and a correction pipe is formed in the pipe body. I will do it. After the correction pipe is formed in the pipe body, the correction pipe is fixed by filling mortar or the like in the gap between the inner surface of the pipe body and the outer surface of the correction pipe.
Further, instead of the belt-like member, a straight pipe is formed while sequentially connecting short pipes that can be inserted from the opening at the upper end of the connecting part, and as described above, between the inner surface of the tubular body and the outer surface of the straight pipe. It is also practiced to fix the correction pipe by filling the gap with mortar or the like.
According to the two repair methods, both require fitting work or connection work for forming a straightening pipe, and these work are not only troublesome and troublesome, but also have fitting parts or connection parts. For this reason, there is a possibility that a seal failure may occur at that portion, and the reliability cannot be increased. Further, in the former case, a self-propelled pipe making machine and a hydraulic unit for driving the same are required, and there is a disadvantage that the cost increases.
Incidentally, it is conceivable to repair mortar by applying mortar directly to the inner surface of the tube. However, even if mortar is applied, it is a temporary solution and not a fundamental solution. Is desired.
Further, in recent years, in addition to the pipe repair work, for example, it has been demanded to arrange a cable such as an optical fiber as a communication line in the pipe body, and after performing the pipe repair work as described above. In addition, the operation of passing the optical fiber and the operation of fixing the optical fiber to the tube after the connection have to be performed, and the operation time is troublesome.
[0004]
In view of the above-described situation, the present invention intends to solve the problem of speeding up the operation and reducing the cost, performing a highly reliable repair, and arranging the cable at the same time during the repair. The point is to be able to set.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention embeds a plurality of pipe bodies that guide sewage, rainwater, and the like in the ground along the arrangement path, and connects the pipe bodies to each other along the arrangement path. In a drainage pipe structure provided with connecting parts such as hand holes and manholes, a flexible auxiliary pipe for drainage guidance is provided with a cable, and the auxiliary pipe is wound and housed and rotated by being rotated. the body is provided, the result of the fixing means is fed from the rotating body to fix said auxiliary tube is positioned in the tube body in the tube body set only, the fixing means, said auxiliary tube and the inner surface of the tubular body A drainage pipe repairing device having a configuration in which the auxiliary pipe is fixed to the pipe body by injecting a filler into a gap with the outer surface of the pipe, and a plurality of pipe bodies for guiding sewage, rainwater, etc. are disposed. Embedded in the ground along the path In the drainage pipe structure in which connecting parts such as a hand hole and a manhole for connecting the pipes to each other are provided, the drainage pipe has flexibility for drainage guidance, and an auxiliary pipe equipped with a cable can be extended. By rotating the wound rotating body, the auxiliary pipe to be drawn out is inserted over the entire interior of the tubular body connecting the connecting sections through the opening above the connecting section, and then the inner surface of the tubular body and By injecting a filler into the gap between the outer surface of the auxiliary pipe and fixing the auxiliary pipe with respect to the pipe body, the conventional problems can be solved. That is, the flexible auxiliary pipe for guiding the drainage can be drawn out by the rotating body and disposed inside the pipe body, so that conventional fitting and connection are unnecessary. Then, the auxiliary pipe is fixed to the pipe body and the repair work is completed. In addition, if a cable necessary for the auxiliary tube, for example, an optical fiber, a power source or a signal conductive wire, is provided, the cable can be provided only by attaching the auxiliary tube to the tube.
[0006]
The auxiliary pipe is composed of an outer wall having irregularities and an inner wall constituting a flat surface, and the cable is arranged in a gap formed in a straight line between the outer wall and the inner wall of the auxiliary pipe in the tube axis direction. The cable can be disposed at the shortest distance while being protected by the auxiliary pipe.
[0007]
The cable is composed of an optical fiber.
[0008]
The fixing means is configured to fix the auxiliary pipe to the pipe body by injecting the filler into the gap between the inner surface of the pipe body and the outer surface of the auxiliary pipe, and thus the gap is filled with the filler. by filling, or cracking even secondary pipe, even cracked the secondary pipe, with the waste water flowing through the auxiliary tube filling material is prevented from leaking to the inner surface of the tubular body, the tubular body by its filler The pipe body itself can be repaired or the inner surface of the pipe body can be repaired, and the pipe body itself can be cracked or cracked. Can be maintained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a drain pipe structure for guiding sewage, rainwater, and the like. This drain pipe structure includes a plurality of concrete pipe bodies 1 embedded along an arrangement path, and these pipe bodies 1 and 1. It consists of a plurality of connecting parts 2 such as concrete hand holes and manholes for connecting each other. In the figure, the tubular body 1 is composed of a single member having a length of about 30 m, but it may be composed of a plurality of short tubes connected together. The connecting portion 2 is preferably made of concrete from the viewpoint of strength and cost, but may be made of other materials. In the figure, a state in which a lid (not shown) for closing the opening above the connection portion 2 is removed is shown.
[0010]
The repair method for repairing the tubular body 1 configured as described above will be described. First, a survey of the tubular body 1 is performed using a camera or the like, and a pipe 1 that needs repair is searched for, for example, a crack has occurred. It's out. Next, the inside of the tube 1 that has been found is washed by the high-pressure jet 4 of the washing wheel 3 as shown in FIG. Reference numeral 5 shown in FIG. 2 is a water stop cock for stopping water so that the washing water from the high-pressure jet 4 does not enter the other pipe body 1. Thereafter, as shown in FIG. 3, about 30 m having flexibility for drainage guidance in the vicinity of the upper end opening 2K of one of the two connecting portions 2 and 2 adjacent to each other in the arrangement path. A rotating body (drum) 7 around which an auxiliary pipe 6 having a length of about 5 mm is disposed, and a winch 9 arranged near the other connecting portion 2 at the tip of a cap-shaped cap 8 attached to the tip of the auxiliary pipe 6. After fixing the distal end of the wire 10 to be pulled, the auxiliary tube 6 can be inserted into the tube body 1 through the opening 2K above the connection portion 2 by winding up the winch 9 as an insertion means. I can do it.
[0011]
As shown in FIG. 5, the auxiliary pipe 6 has an outer diameter R smaller than the inner diameter S of the tubular body 1, the outer diameter R is 286 mm, and the inner diameter r is 250 mm. It is not limited to this dimension. In addition, although the winch 9 is used as the insertion means, the auxiliary pipe 6 may be inserted using fluid pressure such as air pressure, and the specific configuration as the insertion means may be other than these. Further, as shown in FIG. 10A, the rotating body 7 regulates the width of the rotating shaft 7A that is rotatable around the horizontal axis and the winding width in the left-right direction of the auxiliary pipe 6 that is wound around the rotating shaft 7A. A pair of left and right disc-shaped restricting plates 7B and 7B are used as main constituent members. Reference numerals 11, 12, and 13 shown in FIG. 3 are guide rollers as guide means provided on the inlet (insertion) side of the tube body 1 for moving and guiding the auxiliary tube 6 drawn out from the rotating body 7. The arch-shaped guide portions 11A and 12A are extended above the guide rollers 11 and 12 arranged in the upper and lower directions, and the movement of the auxiliary pipe 6 to be fed out in the left and right directions and the upward direction is restricted. Reference numerals 14 and 15 shown in FIG. 3 are guide rollers as guide means provided on the outlet side of the tube 1 for moving and guiding the wire 10, and above the guide rollers 15 arranged on the ground in the same manner as described above. An arcuate guide portion 15A is extended to restrict the movement of the wire 10 wound up by the winch 9 in the left-right direction and the upward direction. Instead of the guide rollers 11, 12, and 13, a guide member 19 having a circular opening 19 </ b> A attached to the opening above the connection portion 2 as shown in FIGS. 10A and 10B. Also good. Here, the auxiliary pipe 6 is inserted into the pipe body 1 that needs repair, and repair is performed. However, the auxiliary pipe 6 is also inserted into the pipe body 1 that does not need repair to increase the strength of the pipe body 1. You may make it aim at.
[0012]
As shown in FIGS. 6 (a), 6 (b) and 7, the auxiliary pipe 6 has convex portions 6A and concave portions 6B alternately arranged on the outer surface in the axial direction of the tube, and they are formed in an annular shape. In addition, in order to form a gap that allows the optical fiber 16 to be inserted through the plurality of convex portions 6A in a straight line between the plurality of convex portions 6A in the radial direction, between the convex portions 6A and 6A. The outer wall 17 is formed with a connection projection 6C for connection, and the inner wall 18 is used to flatten the inner surface of the outer wall 17. By forming the connecting projection 6C, not only can the shape retention strength of the auxiliary tube 6 itself be increased, but also the optical fiber 16 can be restricted from moving in the radial direction. The auxiliary pipe 6 may be constituted by a cylindrical outer wall and a straight cylindrical inner wall having a smaller outer diameter, and the optical fiber 16 may be inserted into a gap formed between the outer wall and the inner wall. Further, when the auxiliary pipe 6 is made of high-density polyethylene, the chemical resistance is superior to that of the concrete pipe 1 and the roughness coefficient n is 0. In contrast to 013, the auxiliary pipe 6 made of high-density polyethylene has a low value of 0.010. Therefore, even if the drainage diameter is reduced by providing the auxiliary pipe 6 in the pipe body 1, there is an advantage that the drainage capacity is almost the same as the case of flowing through the pipe body 1, but other synthetic resins, synthetic rubbers, etc. Any material may be used as long as it has flexibility.
[0013]
Although the case where one of the optical fibers 16 is provided in the auxiliary pipe 6 is shown, as shown in FIG. 8, four optical fibers 16 may be provided in the auxiliary pipe 6, and two, three, or five are provided. It is also possible to carry out by providing the auxiliary pipe 6 with more than 16 optical fibers 16. You may carry out by providing not only the said optical fiber 16 but an electric wire. The other configuration shown in FIG. 8 is the same as that shown in FIG.
[0014]
After the auxiliary tube 6 is set in the tube body 1 as described above, the filler material 21 is filled over the entire gap between the outer surface of the auxiliary tube 6 and the inner surface of the tube body 1, thereby the tube body 1. In contrast, the auxiliary pipe 6 can be fixed (see FIG. 4). FIG. 4 shows a state in which the auxiliary pipe 6 is installed on three pipe bodies including the two pipe bodies 1 and 1 adjacent to each other with the connection parts 2 and 2 interposed therebetween.
When the gap 21 is filled with the filler 21, as shown in FIGS. 6A and 6B, the cross-sectional shape as a straight cylinder having a plurality of holes 22A formed in the longitudinal direction is circular (square shape). Or the like (which may have any shape) 22 is inserted into the gap between the outer surface of the auxiliary tube 6 and the inner surface of the tube 1, and the filler 21 is inserted from one end of the tube 22. By supplying, the filler 21 can be reliably supplied into the gap through the hole 22 </ b> A of the tube 22 with a small injection pressure, and the gap can be completely closed by the filler 21. The other end of the tube 22 (the side opposite to the side on which the filler 21 is supplied) may be closed by the cap 22B so that the filler 21 can be reliably moved to the other end of the tube 22. Although not shown in the figure, the opening formed by the end surface of the auxiliary tube 6 on the cap 22B side and the end surface of the tube body 1 is closed with a lid or the like before filling. If the tube 22 is inserted together when the auxiliary tube 6 is inserted into the tube body 1, the tube 22 is inserted into the gap between the outer surface of the auxiliary tube 6 and the inner surface of the tube body 1. There is an advantage that can be removed. In this case, it is possible to prevent the tube 22 from being damaged due to contact with the inner surface of the tube body 1 at the time of insertion by configuring the tube 22 to have flexibility.
[0015]
In addition to using a filler 21 as a fixing means for fixing the auxiliary pipe 6 to the tube body 1, as shown in FIGS. 9 (a) and 9 (b), only a part of the gap is filled and fixed. May be. That is, the water expansion rubber 23 is provided on the outer surface of the recess 6B of the auxiliary pipe 6, and after inserting the auxiliary pipe 6 into the tube body 1 as shown in FIG. By expanding, the auxiliary pipe 6 can be fixed to the pipe body 1 as shown in FIG. The water-swelling rubber 23 has a property that it does not return to its original state when it is expanded once. With such a configuration, the filling work of the filler 21 as described above can be made unnecessary. In addition to providing a plurality of the water-swelling rubbers 23, one long one may be provided spirally in the recess 6B.
[0016]
The filler 21 may be a mixture of a base mainly composed of isocyanate and a curing agent mainly composed of polyol, or may be a concrete material such as mortar, or foam. A plastic foam (foam) such as polystyrene or polyurethane foam, a synthetic resin, or the like may be used, and any material may be used as long as it is cured with time after filling. Further, any material can be used as long as it can insert the synthetic resin material, the rubber material or the like into the gap and fix the auxiliary tube 6 to the tube body 1. In addition, when the said plastic foam (foam) etc. are used, the vibration which generate | occur | produces especially by an earthquake is absorbed favorably, and it can avoid favorably that the crack and crack of the tubular body 1 and the auxiliary | assistant pipe | tube 6 enter. it can.
[0017]
By providing the auxiliary pipe 6 as described above, a step is generated between the drain guide surface 2a of the invert 2A of the connecting portion 2 and drainage cannot be performed satisfactorily. As shown, the height of the auxiliary pipe 6 may be made the same by placing mortar (may be molten resin or the like) 24 on the drainage guide surface 2a of the invert 2A. Instead of the mortar, a dedicated drainage guide member (not shown) may be manufactured, and the drainage guide member may be fixed on the drainage guide surface 2a of the invert 2A.
[0018]
【The invention's effect】
According to claim 1 or claim 4 , the flexible auxiliary pipe for drainage guide can be drawn out by the rotating body and continuously inserted over the entire interior of the pipe body, In addition to eliminating the need for connection and connection, it is possible not only to speed up the work, but also to eliminate the need for a conventional machine or the like for forming a pipe, thereby reducing costs. In addition, since the auxiliary pipe is seamless, it is possible to perform highly reliable repair without water leakage. Further, by providing the auxiliary pipe with the cable, it is not necessary to separately perform the cable wiring work, and the working time can be shortened. In addition, the auxiliary pipe is cracked or cracked in the auxiliary pipe by adopting a configuration in which the auxiliary pipe is fixed to the pipe body by injecting a filler into the gap between the inner surface of the pipe body and the outer surface of the auxiliary pipe. However, the filler prevents the drainage flowing in the auxiliary pipe from leaking to the inner surface of the pipe body, and the filler can be used to reinforce the pipe body or repair the inner surface of the pipe body. It is possible to maintain a good drainage guiding function over a long period of time with little or almost no cracking or cracking in the tube itself, and a highly reliable drainage structure.
[0019]
According to claim 2 or claim 5 , the auxiliary pipe comprises an outer wall having irregularities and an inner wall constituting a flat surface, and the cable is formed in a straight line between the outer wall and the inner wall of the auxiliary pipe in the direction of the tube axis. By arranging it in the gap, it is possible to arrange it at the shortest distance while protecting the cable with the auxiliary pipe, so there is no trouble such as cable damage, the cable length is short, and the durability surface And it becomes advantageous in terms of cost.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a drain pipe structure.
FIG. 2 is a longitudinal side view showing a state in which the inside of a tube is washed.
FIG. 3 is a longitudinal side view showing a state where an auxiliary tube is inserted into a tubular body.
FIG. 4 is a longitudinal side view showing a drain pipe structure in a repair completed state.
FIG. 5 is a front view showing a range in which mortar is piled up to eliminate a step with the auxiliary pipe.
6A and 6B show a state where a tube is inserted into a gap between a tube body and an auxiliary tube, where FIG. 6A is a side view with a partial cross section, and FIG. 6B is a front view with a partial cross section.
FIG. 7 is a perspective view of an auxiliary tube including an optical fiber.
FIG. 8 is a perspective view of an auxiliary tube provided with four optical fibers.
9A and 9B show another fixing method using water-expanded rubber, wherein FIG. 9A is a longitudinal side view of a main part showing a state before the water-expanded rubber is expanded, and FIG. 9B is a state where the water-expanded rubber is expanded. It is a vertical side view of the principal part which shows.
FIGS. 10A and 10B show a guide member mounted on a connection portion, in which FIG. 10A is a plan view and FIG.
[Explanation of symbols]
1 Tube 2 Connection part
2A Invert 2a Drainage guide surface
2K Upper opening 3 Washing car 4 High-pressure jet 5 Stop cock 6 Auxiliary pipe
6A Convex 6B Concave
6a Hole 7 Rotating body (drum)
7A Rotating shaft 7B Regulating plate 8 Cap 9 Winch (insertion means)
10 wires
11,12,13,14,15 Guide roller
11A, 12A, 15A Guide part 16 Optical fiber
17 Outer wall 18 Inner wall
21 Filler 22 Tube (cylinder)
22A hole 22B cap
23 Water expansion rubber 24 Mortar r Auxiliary pipe inner diameter R Auxiliary pipe outer diameter S Tubing inner diameter

Claims (6)

A plurality of pipes that guide sewage, rainwater, etc. are buried in the ground along the arrangement route, and a connecting part such as a hand hole or a manhole is provided in the middle of the arrangement route to connect the pipes together. In the drain pipe structure, a flexible auxiliary pipe for drainage guide is provided with a cable, and a rotating body that winds and stores the auxiliary pipe and can be fed out by rotation is provided. said auxiliary tube is positioned in the tube body Ri name provided fixing means for fixing the tube body, said securing means to inject filler material into the gap between the inner surface and the outer surface of the secondary pipe of the tubular body A drainage pipe repair device configured to fix the auxiliary pipe to the pipe body .   The auxiliary pipe is composed of an outer wall having irregularities and an inner wall constituting a flat surface, and the cable is arranged in a gap formed in a straight line in the tube axis direction between the outer wall and the inner wall of the auxiliary pipe. The drainage pipe repair device according to claim 1.   The drainage pipe repair device according to claim 1 or 2, wherein the cable is an optical fiber. A plurality of pipes that guide sewage, rainwater, etc. are buried in the ground along the arrangement route, and a connecting part such as a hand hole or a manhole is provided in the middle of the arrangement route to connect the pipes together. In the drain pipe structure, the flexible pipe for drainage guide and the auxiliary pipe provided with the cable is rotated so that the rotary body is wound around freely so that the auxiliary pipe to be fed is disposed above the connecting portion. And inserting the filler into the gap between the inner surface of the tube body and the outer surface of the auxiliary tube, and then inserting the filler into the tube body. A drainage pipe repair method characterized by fixing an auxiliary pipe . The auxiliary pipe is composed of an outer wall having irregularities and an inner wall constituting a flat surface, and the cable is arranged in a gap formed in a straight line in the tube axis direction between the outer wall and the inner wall of the auxiliary pipe. The drain pipe repair method according to claim 4 . The drain pipe repair method according to claim 4 or 5 , wherein the cable is an optical fiber.

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