JPH1054494A - Pipeline lining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a lining having the specified thickness on a required part on the inner peripheral surface side of a pipeline. SOLUTION: A deteriorated part of the inner peripheral surface front layer of a pipeline 100 is removed, a lining cylindrical sheet 10 formed of an irregular part in which many protrusions are fixed on the outer peripheral side and a flat surface part, and having flexibility is inserted into the inner peripheral side of the pipeline 100, the irregular part of the lining cylindrical sheet 10 is faced to the deteriorated removal part 102 of the pipeline 100, pressurized liquid 15 is filled on the inner peripheral side of the lining cylindrical sheet 10, the lining cylindrical sheet 10 is expanded and pressed to the inner peripheral surface of the pipeline 100, the protrusions are buried by pouring filler 103 to the outer peripheral side of the irregular part of the lining cylindrical sheet 10, and the lining cylindrical sheet 10 is fixed on the inner peripheral surface side of the pipeline 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipeline lining method for forming a lining on the inner peripheral surface side of a pipeline for repairing a concrete sewer having a deteriorated inner peripheral surface layer.

[0002]

2. Description of the Related Art Conventionally, when a lining is formed on the inner peripheral surface side of a pipeline, for example, for repairing a concrete sewer with a deteriorated inner peripheral surface layer, a large number of projections are formed as shown in FIG. The flexible lining tubular sheet 2 fixed on the entire outer peripheral side is inserted into the inner peripheral side of the conduit 100, and the inner peripheral side of the lining tubular sheet 2 is filled with the pressurized liquid 5 to form the lining. The tubular sheet 2 for lining is inflated and pressed against the inner peripheral surface of the conduit 100, and the conduit 1 on the outer peripheral side of the tubular sheet 2 for lining is
The filler 103 is injected into a gap between the pipe 100 and the projections, and the protrusions are embedded, so that the lining tubular sheet 2 is adhered to the inner peripheral surface of the pipe 100. Note that the deteriorated portion 101 of the inner peripheral surface of the pipe 100 is not removed, and a lining is formed thereon.

[0003]

In a concrete sewer pipe, the upper part (ceiling part) of the inner peripheral surface usually deteriorates, and the lower part where the sewage flows does not deteriorate. Therefore, it is sufficient to repair the upper part. It is. As described above, even when the lining may be formed on a part of the inner peripheral surface side of the pipeline 100, the relatively thick lining is formed on the entire inner peripheral surface side of the pipeline 100 by the above-described pipeline lining method. Since it is formed, it is uneconomical, and the lining tubular sheet 2 has a problem that it has a large weight and volume and is difficult to handle because many projections are fixedly provided on the entire outer peripheral side.

The present invention has been made in view of such a conventional problem,
It is an object of the present invention to provide a pipeline lining method capable of suitably forming a lining on a necessary portion on an inner peripheral surface side of a pipeline.

[0005]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
A number of projections are inserted into the inner peripheral side of the conduit, and the flexible lining tubular sheet is formed of an uneven portion fixed on the outer peripheral side and a flat planar portion and has flexibility, and the lining tubular sheet is The inner peripheral side is filled with a pressurized gas or a pressurized liquid to inflate the lining tubular sheet and press it against the inner peripheral surface side of the pipeline, on the outer peripheral side of the uneven portion of the lining tubular sheet. Filling the protrusion by injecting a filler,
The lining tubular sheet is to be fixed to the inner peripheral surface side of the pipeline.

It is preferable to remove the deteriorated portion of the inner peripheral surface layer of the pipe and to make the uneven portion of the lining tubular sheet correspond to the deteriorated portion. Further, after the lining tubular sheet is fixed to the inner peripheral surface side of the pipeline, the planar portion of the lining tubular sheet may be separated from the uneven portion and removed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
Referring to FIG.

In the drawing, reference numeral 10 denotes a lining tubular sheet. The lining tubular sheet 10 is formed of a synthetic resin material such as high-density polyethylene and is flexible. As shown in FIG. Are formed on the outer peripheral surface of the seat body 11 in a staggered arrangement with a number of projections (anchors) 12, 12,... The range of the uneven portion corresponds to the range of the deteriorated portion 101 on the inner peripheral surface of the pipeline 100. In addition, the tubular sheet for lining 10 may be formed by integrally forming the flat portion and the uneven portion, or may be formed by joining the flat sheet and the uneven sheet into a cylindrical shape, In this case, the ratio between the flat portion and the uneven portion can be easily adjusted.

In order to form a lining on the inner peripheral surface side of a cylindrical pipe 100 made of concrete by using such a lining tubular sheet 10, first, as shown in FIG. The deteriorated portion 101 is crushed and removed.
Then, as shown in FIG.
0 is inserted into the pipeline 100 in the folded state.
The lining tubular sheet 10 is inserted into the pipe 10
This is performed by pulling through the manhole or the like on the other end side through a wire or the like while feeding from the manhole or the like on one end side of the zero.

Next, as shown in FIG. 3, the inner peripheral side of the lining tubular sheet 10 is filled with a pressurized liquid 15 (about 5 m water column) such as water, and the lining tubular sheet 10 is formed into a cylindrical shape. And pressed against the inner peripheral surface of the conduit 100. At this time, the uneven portion of the lining tubular sheet 10 is
00 is made to face the deterioration removing portion (slip surface) 102 on the inner peripheral side. Then, a gap is formed between the deterioration removing portion 102 of the pipe 100 and the lining tubular sheet 10 (sheet body 11) by a large number of protrusions 12, 12,. Tubular sheet 10
(Sheet body 11) is in close contact.

In a state in which the lining tubular sheet 10 is pressed against the inner peripheral surface of the pipeline 100 by the pressurized liquid 15, a gap between the uneven portion of the lining tubular sheet 10 and the outer peripheral side of the pipeline 100 is formed. Are filled with a filler 103 made of a cementitious substance composition such as cement milk or mortar. When the filler 103 is solidified, the lining tubular sheet 10 is firmly attached to the inner peripheral surface of the conduit 100, so that the pressurized liquid 15 is discharged from the inner peripheral side of the lining tubular sheet 10.

Next, as shown in FIG. 4, the flat portion of the lining tubular sheet 10 is cut off from the uneven portion and removed from the inside of the pipe 100, and the lining sheet attached to the inner peripheral surface of the pipe 100 is removed. The two side edges of the uneven portion of the tubular sheet 10 are vertically elongated side edge fixing members (corrosion-resistant flat bars) 19, 1
9 to fix. In addition, the side edge fixing members 19, 19
It is fixed to the inner peripheral surface of the conduit 100 via an anchor bolt or the like.

As described above, the lining tubular sheet 10
Has a small weight and volume compared to a lining tubular sheet having projections and depressions formed on the entire outer peripheral surface, which is composed of an uneven portion and a flat portion, so that it is easy to handle and relatively long (about 100 m). The lining can be formed collectively also in the pipeline of (1). The lining tubular sheet 10
Since a relatively thick lining is formed in a range corresponding to the uneven portion, the lining can be efficiently and economically formed on the deterioration removal portion 102 of the pipeline 100.

In the above embodiment, the pressurized liquid 15
Shows a case where the lining tubular sheet 10 is inflated by pressurized gas, but may be inflated by pressurized gas. Although the above-described embodiment shows a case where the flat portion of the lining tubular sheet 10 is separated from the uneven portion and removed, the flat portion does not necessarily have to be removed.

[0015]

As described above, the pipe line lining method according to the present invention inflates the lining tubular sheet composed of an uneven portion having a large number of projections fixed on the outer peripheral side and a flat flat portion. By pressing against the inner peripheral surface of the pipe line and injecting and fixing the filler on the outer peripheral side of the uneven portion of the lining tubular sheet, to compare with the range corresponding to the uneven portion of the lining tubular sheet. Since a thick lining is formed, the lining can be suitably formed at a necessary portion on the inner peripheral surface side of the pipeline.

In addition, the deteriorated portion of the pipeline is suitably repaired by removing the deteriorated portion of the surface layer on the inner peripheral surface of the pipeline and making the uneven portion of the lining tubular sheet correspond to the degradation removed portion. Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a pipeline lining method according to the present invention and showing a first step.

FIG. 2 is a cross-sectional view showing a second step in the embodiment of the pipeline lining method according to the present invention.

FIG. 3 is a cross-sectional view showing a third step in the embodiment of the pipeline lining method according to the present invention.

FIG. 4 is a cross-sectional view showing a fourth step, which is an embodiment of the pipeline lining method according to the present invention.

FIG. 5 is an enlarged cross-sectional view of the lining tubular sheet in FIGS. 2 to 4;

FIG. 6 is a cross-sectional view showing an example of a conventional pipeline lining method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cylindrical sheet for lining 11 Sheet main body 12 Projection (anchor) 15 Pressurized liquid (water) 19 Side edge fixing member (corrosion-resistant flat bar) 100 Pipe line (sewage sewer) 101 Deteriorated part 102 Deteriorated removal part (slip surface) 103 filler (cementitious substance composition)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location B29L 23:00

Claims (3)

[Claims] 1. A flexible lining tubular sheet comprising a number of projections consisting of an uneven portion fixed on the outer peripheral side and a flat planar portion is inserted into the inner peripheral side of a pipeline, and said lining is provided. A pressurized gas or a pressurized liquid is filled in the inner peripheral side of the tubular sheet for inflation, and the tubular sheet for lining is inflated and pressed against the inner peripheral surface side of the pipeline, and the unevenness of the tubular sheet for lining is formed. A pipe lining method in which a filler is injected into an outer peripheral side of the portion to bury the protrusion, and the lining tubular sheet is fixed to an inner peripheral surface side of the pipe. 2. A method for removing a deteriorated portion of an inner peripheral surface layer of a pipe,
2. The pipe line lining method according to claim 1, wherein the uneven portion of the lining tubular sheet corresponds to the deterioration removed portion. 3. The fixing device according to claim 1, wherein after fixing the lining tubular sheet to the inner peripheral surface side of the pipeline, the planar portion of the lining tubular sheet is separated from the uneven portion and removed. Pipeline lining method.