JPH1182865A - Lining method for pipe culvert - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and speedily lay a communication cable pipe in parallel, by making a lining pipe of a shape a part of an upper part of which has a recessed groove outside along its longitudinal direction and laying the communication cable pipe in the outside recessed groove. SOLUTION: A pipe manufacturing machine is carried in an existing pipe culvert to be modified through a manhole. A lining pipe R with a rectangular cross section, a part of an upper part of which has a recessed groove R1 along its longitudinal direction, is then produced in the existing pipe culvert P by pulling in a band member in the manhole manually at the beginning, then continuously supplying the band material to the pipe manufacturing machine and connecting a junction part while wrapping it spirally. After inserting a communication cable pipe K in the recessed groove R 1 on the upper part of the lining pipe R from one pipe opening of the existing pipe culvert P and reaching it to another pipe opening, back filling material is filled in gaps between the existing pipe culvert P, the lining pipe R and the communication cable pipe K and around another pipe opening, in order to complete lining of the existing pipe culvert P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewer lining method for forming a lining layer on an inner surface of an existing sewer such as a sewer pipe, a water pipe and a gas pipe.
More specifically, a tubular body formed by spirally winding a band-shaped member made of a long plate-like body, a so-called lining pipe, is inserted into a sewer, a backfill material is injected, and a communication cable pipe is inserted. This is related to a sewer lining method.

[0002]

2. Description of the Related Art When a new communication cable pipe or the like is juxtaposed in an existing pipe such as a sewer pipe, it is preferable to lay the cable pipe on the upper part of the pipe due to the flow of sewage or the like. However, as shown in FIG. 8, when the communication cable pipe c is laid at a certain position of the sewer a, particularly at the upper part, post-processing such as attaching a hook d for fixing the communication cable pipe c is required. Becomes

[0003] The present applicant has proposed a sewer lining method as follows.
As described in Japanese Patent Application Laid-Open No. 7-261363, a tubular body is formed by spirally winding a belt-like member in a duct and joining the side edges of the belt-like members adjacent to each other. A method of lining the inner circumferential surface of a pipe with a tubular body was proposed.

According to this method, if there is an interval between the lining pipe and the existing pipe, a communication cable pipe is inserted, a pipe port seal is applied, and a backfill material is injected. A communication cable tube can be laid. Moreover, when the backing material is cured, the communication cable tube can be fixed in the backing material, and no hook or the like is required.

[0005] However, most sewer sewers have a circular cross section, and naturally, the lining pipe inserted therein also has a circular cross section. In this case, when trying to insert the communication cable pipe into the gap between the existing sewer and the lining pipe, the communication pipe is placed on the lining pipe with a circular cross section, so a mechanism for holding the communication cable pipe is required. In addition, there is a problem that post-processing or the like requires a very labor-intensive operation.

When the existing pipe is bent, the gap between the existing pipe and the lining pipe is not constant. It is possible that there is no gap between the two. In this case,
It is quite difficult to insert the communication cable tube later.

[0007]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can easily and promptly arrange communication cable pipes side by side when constructing a pipe lining. The purpose was to provide a lining method.

[0008]

SUMMARY OF THE INVENTION According to the present invention, a long strip-shaped member having joints formed at both side edges is continuously supplied in an existing culvert to form a spiral. While being wound, the tubular body formed by joining the mutually joined joints is left, and a lining pipe is formed with a newly supplied strip-shaped member in front of the already formed tubular body, and the existing culvert is formed. A sewer lining method that fills a gap between lining pipes with backfill material and lines the sewer.
This is a sewer lining method in which a part of an upper part of the lining pipe is formed into a shape having a concave groove on the outside along the longitudinal direction, and a communication cable pipe is laid in the concave groove on the outside.

[0009]

According to the pipe lining method of the present invention, the lining pipe is formed so that a part of the upper part has a concave groove on the outside along the longitudinal direction, and a communication cable pipe is laid in the external groove. As a result, there is no need to work the mechanism for holding the communication cable tube with post-processing, etc., as in the conventional case, and there is no concern when there is no gap between the existing tube and the lining tube. Therefore, it is possible to easily and quickly arrange the communication cable pipes at the time of constructing the sewer lining.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. First, in the present invention, an example of a band-shaped member forming a lining tube will be described with reference to FIG.

As shown in FIG. 1, this belt-shaped member 100
The main body has a flat plate shape with a constant thickness, and an appropriate number (two in the illustrated example) of ridges 102 are continuously provided in the longitudinal direction of the outer surface thereof. A metal (usually steel) plastically deformable functional material 120 having a W-shaped cross section (V-shaped or U-shaped) is mounted between the ridges 102. The inner surface 106 is formed substantially smooth. At both ends of the belt-shaped member 100, joining portions 100A and 100B are formed to be engaged with each other by overlapping inside and outside.

That is, in the front edge side joining portion 100A, the base of the protruding ridge 102A at the front end portion is expanded, a concave groove 110 is provided vertically from the inner surface side, and a protruding portion 112 is continuously provided from the protruding ridge 102A. Have been. The trailing edge side joining portion 100B
An extension 114 is extended from the projection 102 at the rear end, and a projection 102B that engages with the concave groove 110 of the front edge side joining portion 100A is provided vertically near the end of the extension 114. A packing 118 is provided vertically on a portion of the overhang portion 114 adjacent to the convex line 116.

The belt-shaped member 100 is usually formed of a synthetic resin material, and in particular, hard vinyl chloride which can be continuously formed by extrusion from the viewpoint of moldability is preferable. However, it may be formed of a metal material.

Next, a pipe maker for a lining pipe according to the present invention will be described with reference to FIG. The tube making machine S has a plurality of rollers 2 forming a flexible body having a predetermined width and a link mechanism constituted by a plurality of link bodies, and a cross-sectional shape in which a concave portion 31 is formed on a rectangular upper surface. It is composed of a regulating frame 3 and a joining mechanism 5 mainly composed of a tube-forming roller 4 attached to the roller 2.

The path of the roller 2 is regulated by a regulating frame 3 so as to form a cross-sectional shape in which a concave portion is formed on a rectangular upper surface.
Is wound and held in the same shape as the outer periphery of the roller 2. By driving the roller 2 with a hydraulic motor, the lining pipe R can be formed in a shape having a concave groove R1 along the longitudinal direction while a part of the upper part is rotated while the pipe making machine itself rotates. Has become.

Hereinafter, as an example of the sewer lining method of the present invention, steps of an application example to a sewer sewer as an underground sewer will be described with reference to FIGS. In FIG. 3, Q1 is an upstream human hole, and Q2 is a downstream human hole. In the ground portion, the unwinding device T with a turntable around which the belt-shaped member 100 is wound is disposed on the upstream human hole Q1 side, and the hydraulic drive source G is disposed on the downstream human hole Q2 side. Construction will be done from upstream to downstream.

First, the pipe making machine S is carried into the existing culvert P to be rehabilitated through the human hole Q1. Next, the band-like member 1
00 is drawn into the human hole Q1, and the band-shaped member 100 is manually wound several times (about three times) in the human hole Q1 to produce a lining tube Ro (this is called a starting lining tube). The circumference of the inner surface of the starting lining pipe Ro is equal to the circumference of the pipe making machine S.

The tube making machine S is installed inside the starting lining tube Ro, and the joining mechanism 5 of the tube making machine S is set in a predetermined state at the front edge of the starting lining tube Ro. Pipe-making machine S with the starting lining tube Ro in this state assembled
Into the existing sewer P having a rectangular cross section.

In this state, the band member 100 is
Is continuously supplied and spirally wound, and the joining parts 100A and 100B that are in contact with each other are joined together. As shown in FIG. Lining tube R having a rectangular cross section having a concave groove R1 along the longitudinal direction
Is manufactured.

Thereafter, as shown in FIG. 4, a communication cable pipe K was inserted into one of the existing pipes P into the concave groove P1 on the upper part of the lining pipe P, and reached the other pipe. Thereafter, as shown in FIG. 5, the backfill material U is provided around the gap between the existing pipe P, the lining pipe R, and the communication cable pipe K, and around the pipe opening.
To complete the lining of the existing sewer P.

As shown in FIG. 6, the lining pipe for lining the inside of the existing sewer P has a circular section having a concave groove R1 'in which a part of the upper part extends along the longitudinal direction and a communication cable pipe K is laid. Lining pipe R '
As shown in FIG. 7, the lower portion is a lining tube R ″ having a rectangular cross section, and the upper portion is a lining tube R ″ having a circular cross section having a concave groove R1 ″ in which a communication cable tube K is laid along a longitudinal direction. You may.

[0022]

The present invention will be described below with reference to examples. Example 1 Using the belt-shaped member 100 shown in FIG. 1, the tube forming machine S shown in FIG.
The communication cable tube K was laid at the same time as the lining of the existing sewer P having a rectangular cross section of 500 mm x 1500 mm x 20 m in length.

The lining tube R has a sectional outer dimension of 14
The tube was formed in a shape of a rectangle of 00 mm x 1400 mm in width and having a concave groove with a depth of 150 mm outside in a part of the upper part along the longitudinal direction. A communication cable tube K having an outer diameter of 100 mm was laid. As a result, the inside of the existing sewer P could be smoothly lined with the lining pipe R, and the communication cable pipe K could be laid without any post-processing.

Example 2 Inner dimensions are 1700 mm long × 1700 mm wide × 10 length
lining an existing sewer P with a rectangular cross section of m
The lining tube R is formed in a rectangular shape having a cross-sectional outer dimension of 1600 mm in length and 1600 mm in width, and has a concave groove with a depth of 200 mm on the outside along the longitudinal direction in a part of the upper part. The cable cable K for communication was laid at the same time as the lining of the existing sewer P in the same manner as in Example 1 except that the one having an outer diameter of 150 mm was used. As a result, the inside of the existing sewer P could be smoothly lined with the lining pipe R, and the communication cable pipe K could be laid without any post-processing.

Example 3 An existing sewer P having an inner diameter of 1000 mm and a length of 30 m and having a circular cross section.
That the lining pipe R was
Except that it was formed into a shape having a circular cross section of 00 mm and a concave groove with a depth of 150 mm outside along the longitudinal direction in a part of the upper part, and a communication cable tube K having an outer diameter of 100 mm was used. In the same manner as in Example 1, the communication cable pipe K was laid at the same time as the lining of the existing sewer P. As a result, the inside of the existing sewer P could be smoothly lined with the lining pipe R, and the communication cable pipe K could be laid without any post-processing.

Comparative Example The dimensions of each member were the same as in Example 3 without forming the lining pipe having a concave groove, and the communication cable pipe was simultaneously placed in the state shown in FIG. Was laid. The hooks d were provided every 1 m.
As a result, it takes time to provide the hook d, and
Difficult to insert communication cables.

[0027]

The conduit lining method of the present invention is as described above, so that communication conduits can be installed side by side easily and quickly when constructing the conduit lining.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a band-shaped member used to form a lining tube in the present invention.

FIG. 2 is a front view showing an example of a pipe making machine used for making a lining pipe in the present invention, together with a pipe making state.

FIG. 3 is a cross-sectional view illustrating a process of forming a running pipe in an existing sewer and lining the pipe according to the present invention.

FIG. 4 is a front view illustrating a state in which the inside of an existing pipe is lined with a lining pipe and a communication cable pipe is laid in a concave groove above the lining pipe in the present invention.

FIG. 5 is a front view for explaining a state in which a backfill material is filled around a gap between an existing pipe, a lining pipe, and a communication cable pipe and around a pipe opening;

FIG. 6 is a front view showing another example of the lining tube used in the present invention.

FIG. 7 is a front view showing still another example of the lining tube used in the present invention.

FIG. 8 is a front view showing an example of a conventional method.

[Explanation of symbols]

 P Existing sewer R Lining pipe R1 Groove K Communication cable pipe U Backfill agent 100 Band member 100A, 100B Engagement part

Claims (1)

[Claims] 1. In an existing sewer, a long strip-shaped member having joints formed on both side edges is continuously supplied and spirally wound, and mutually joined joints are joined together. The formed tubular body is left, a lining pipe is formed with a newly supplied strip-shaped member in front of the already formed tubular body, and a backfill material is filled in a gap between the existing culvert and the lining pipe to fill the culvert. A culvert lining method for lining a pipe, in which a part of an upper part of the lining pipe is formed into a shape having a concave groove on the outside along a longitudinal direction, and a communication cable pipe is laid in the concave groove on the outside. A sewer lining method characterized by the following.