JP2000225646A - Lining material for flow path facility and technique for regeneration of flow path facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lining material for a flow path facility which can be integrated with an existing structure and can improve processability and economy by decreasing sheet thickness and a technique for regeneration of the flow path facility using this. SOLUTION: In this technique for regeneration, a lining material 1 for a flow path facility constituted by impregnating at least inner and outer two- layered multi-layer structure with an uncured curable resin and binding an anchor 6 for a grouting material arranged on the outer face side of a resin adsorbing material positioned on the outermost layer under a condition where it is inserted into a pipe path (a flow path facility) and an anchor 7 for the lining material arranged on the inner face side by a bolt 8, is inserted into the pipe path 12 and the lining material 1 for the flow path facility is expanded by acting a fluid pressure in the lining material for the flow path facility. In addition, after the curable resin impregnated in the lining material for the flow path facility is cured while the expanded condition is held, a grouting material 13 is filled into a space S between the inner wall of the pipe path 12 and the lining material 1 for the flow path facility and this is cured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a channel facility lining material and a channel facility rehabilitation method constructed using the same.

[0002]

2. Description of the Related Art Water and sewage, industrial water, agricultural water, gas,
When pipes, manholes, basins, etc., which are flow facilities for oil, underground cables, etc., have become obsolete, a rehabilitation method has been proposed to rehabilitate them without excavating them from the ground, and they have already been put to practical use. I have.

In the rehabilitation method, a lining material made by impregnating a resin adsorbent with a curable resin is inserted into a flow path facility, and the lining material is expanded by fluid pressure and pressed against the inner wall of the flow path facility. In this method, the curable resin impregnated in the lining material is cured while maintaining the state, and a plastic lining layer is formed on the inner wall of the flow path facility to regenerate the flow path facility.

Incidentally, in the structural design of a flow path facility which is subjected to lining by such a rehabilitation method, there is a method in which a load acting on the lining material is received by the lining material itself after the rehabilitation, and a method in which an existing structure and the lining are used. A method has been used in which both members bear the load by considering the material to be integrated.

[0005]

However, in the conventional rehabilitation method, the existing structure and the lining material were not integrated, so that the former method had to be adopted in designing the structure.

[0006] However, in the case of using a method in which the load is received by the lining material itself in the structural design, there is a problem that the thickness required for the lining material is increased and the workability and economy are deteriorated. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to enable integration with an existing structure, to reduce the thickness of a sheet and to improve workability and economy. It is an object of the present invention to provide a flow path facility lining material capable of achieving the above-mentioned and a flow path facility rehabilitation method using the same.

[0008]

Means for Solving the Problems To achieve the above object, an invention according to claim 1 is to impregnate an uncured curable resin into a resin adsorbent having a multilayer structure of at least two layers, inside and outside, to provide a flow path facility. The grouting material anchor disposed on the outer surface side of the resin adsorbent positioned on the outermost layer and the lining material anchor disposed on the inner surface side are connected to each other to form a flow path facility lining material in a state of being inserted into the inside. It is characterized by.

According to a second aspect of the present invention, in the first aspect, the outer surface of the resin adsorbent located at the outermost layer and the inner surface of the resin adsorbent located at the innermost layer are hermetically covered with a plastic film. It is characterized by.

According to a third aspect of the present invention, in the first aspect of the present invention, the grouting material anchor and the lining material anchor are connected by a bolt / nut, a rivet, a rope, a thread, or a string. .

[0011] The invention according to claim 4 is that at least the inside and outside 2
A grouting material anchor which is impregnated with an uncured curable resin into a resin adsorbent having a multilayer structure of layers, and which is disposed on the outer surface side of the resin adsorbent located at the outermost layer while being inserted into the flow path facility; The flow path facility lining is inserted by inserting a flow path facility lining material configured by coupling with a lining material anchor disposed on the inner surface side, and applying a fluid pressure to the inside of the flow path facility lining material. After the material is expanded and the curable resin impregnated in the flow path facility lining material is cured while maintaining that state, the grouting material is placed in the space between the inner wall of the flow path facility and the flow path facility lining material. It is characterized by filling and curing.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, a barrier layer is provided between the inner wall of the flow path facility and the lining material of the flow path facility, and the barrier layer and the lining material of the flow path facility are provided. The grouting material is filled in a space between the two.

According to a sixth aspect of the present invention, in the invention of the fourth or fifth aspect, the grouting material is made of a thermosetting resin or cement alone or a mixture of these and a filler. I do.

According to a seventh aspect of the present invention, in the fifth aspect of the present invention, the barrier layer is formed of a nonwoven fabric or a woven fabric alone or a composite of these and a plastic film.

Therefore, according to the present invention, the lining material for the flow path facility and the flow path facility are integrated by the grouting material, and the integration is further strengthened by the anchoring effect of the grouting material anchor. For,
The load acting on the flow-path facility lining material is received by both the lining material and the flow-path facility, and the load that the flow-path facility lining material should receive is reduced. Therefore, in the structural design, it is possible to adopt a method in which the flow path facility and the flow path facility lining material are considered to be integrated, and the load is borne by both, and the burden of the flow path facility lining material is reduced. The required thickness can be reduced. When the thickness of the flow path facility lining material is reduced as described above, handling of the flow path facility lining material in rehabilitation work is facilitated, workability is improved, and the cost of the flow path facility lining material is reduced. As a result, economic efficiency is improved.

[0016]

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

FIG. 1 is a cross-sectional view of a channel facility lining material (hereinafter, simply referred to as a lining material) 1 according to the present invention. The lining material 1 comprises a tubular inner lining material 2 and an outer lining material 3. The inner lining material 2 and the outer lining material 3 are formed by impregnating a resin adsorbing material 2a, 3a made of a non-woven fabric into a tubular shape with an uncured curable resin. Have been. The inner surface of the inner lining material 2 and the outer surface of the outer lining material 3 are hermetically covered with plastic films 2b, 3b, respectively. Sealing ribbon tapes 4 and 5 are adhered to the inner surface of the joint at the time of sewing of the inner lining material 2 and the outer surface of the joint of the outer lining material 3, respectively. Sealed airtight.

Here, as the nonwoven fabric constituting the resin adsorbing materials 2a, 3a of the inner lining material 2 and the outer lining material 3, fibers such as plastic fiber, grey fiber, carbon fiber and the like are used, and as the plastic fiber, polyester fiber is used. Is mainly used. The nonwoven fabric is obtained by performing a needle punching process on the fiber, and it has been confirmed that the side of the nonwoven fabric from which the needle protrudes is difficult to pull out the fiber thread from the other side. The plastic films 2b and 3b are welded.

The plastic films 2b, 3b
As polyurethane film, nylon or EVOH
Is used. As the thermosetting resin impregnated in each of the resin adsorbents (nonwoven fabric) 2a and 3a, an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, or the like is used. It should be noted that a photocurable resin or the like may be used instead of the thermosetting resin.

Thus, in the lining material 1 according to the present embodiment, a plurality of (four in the same cross section) grouting material anchors 6 are provided on the outer surface side of the outer lining material 3.
Are arranged on the inner surface of the outer lining material 3 (between the inner lining material 2 and the outer lining material 3), and the same number of lining material anchors 7 as the grouting material anchors 6 are provided. The lining material anchor 7 is connected to the lining material anchor 7 by a bolt 8 inserted into the outer lining material 3. A plurality of grouting material anchors 6 and lining material anchors 7 connected by bolts 8 are attached at appropriate intervals in the length direction (the direction perpendicular to the paper surface of FIG. 1). The grouting material anchor 6 is bent and formed into a blade shape, and the lining material anchor 7 is formed into a plate shape and functions as a nut.

Next, the lining material 1 having the above structure
Will be described with reference to FIGS. FIG.
And FIG. 3 is a cross-sectional view showing a method for manufacturing an internal lining material, FIGS. 4 and 5 are cross-sectional views showing a method for manufacturing an external lining material, and FIG. 6 is a vertical cross-sectional view showing an operation of impregnating a thermosetting resin. is there.

When the inner lining material 2 is manufactured, as shown in FIG. 2, a band-shaped resin adsorbing material 2a having the plastic film 2b welded to one surface (the surface on which the needle protrudes in the needle punching process) is used. The film 2b is rolled into a tube in the direction shown by the arrow so that the film 2b is on the outside, and its ends are butted together, and the butted portion is joined by sewing as shown in FIG. Then, the sealing ribbon tape 4 is adhered to the outer surface of the joint to hermetically seal the joint to obtain the inner lining material 2 shown in FIG.

The inner diameter of the inner lining material 2 is set to 80% to 93% of the inner diameter of the outer lining material 3, and the resin adsorbing material 2a of the inner lining material 2 is a non-woven fabric having a property of expanding under fluid pressure. Punching felt obtained by needle punching polyester fiber is mainly used as the nonwoven fabric.

When manufacturing the external lining material 3, as shown in FIG. 4, a band-shaped resin adsorbing material 3a in which the plastic film 3b is welded to one surface (the surface on which the needle protrudes in needle punching) is attached. The grouting material anchor 6 and the lining material anchor 7 are attached by bolts 8. Specifically, a bolt insertion hole is drilled in the resin adsorbent 3a, and the bolt 8 passed through the grouting material anchor 6 is inserted into the bolt insertion hole drilled in the resin adsorbent 3a from the plastic film 3b side to the other side. Then, the lining material anchors 6 are screwed into portions where the bolts 8 protrude from the resin adsorbing material 3a, so that each grouting material anchor 6 is on the side of the resin adsorbing material 2a where the plastic film 2b is welded (the lower surface side in FIG. 4). ), And each lining material anchor 7 is attached to the opposite surface (the upper surface side in FIG. 4). in this case,
The lining material anchor 7 and the bolt 8 functioning as nuts are tightened until the grouting material anchor 6 and the plastic film 3b are hermetically sealed.
Before the lining material anchor 7 is screwed into the bolt 8, the anchor effect may be enhanced by passing a washer or the like through the bolt 8.

The outer diameter of the outer lining material 3 is set smaller than the inner diameter of a pipe 12 (see FIG. 7) described later, and the resin adsorbing material 3a of the outer lining material 3 expands even when subjected to fluid pressure. A nonwoven fabric having difficult characteristics is used. Specifically, a composite with a fiber or a woven fabric or a non-woven fabric with a small elongation mixed with a fiber or a woven fabric is used. For example, a spunbond felt of a spunbonded long fiber is used.

As described above, the grouting material anchor 6 and the lining material anchor 7 are attached, and the belt-shaped resin adsorbing material 3a is moved so that the plastic film 3b and the grouting material anchor 6 are on the outside. The ends are rolled into a tube in the direction of the arrow and the ends are butted together, and the butted portions are joined by sewing as shown in FIG. The outer lining material 3 shown in FIG. 5 is obtained by bonding the sealing ribbon tape 5 to the outer surface of the joint to hermetically seal the joint.

When the internal lining material 2 and the external lining material 3 are obtained as described above, as shown in FIG. 6, the external lining material 3 into which a required amount of the thermosetting resin 9 is injected is vacuum pumped. While evacuating by 10, the inner lining material 2 impregnated with the thermosetting resin in advance is reversely inserted into the outer lining material 3 by fluid pressure such as air pressure. Then, the thermosetting resin 9 injected into the outer lining material 3 is sequentially impregnated into the outer lining material 3 while being swept in the direction of the arrow in FIG. 6 by the inner lining material 2 and impregnated with the thermosetting resin. Lining material 2 composed of the resin adsorbents 2a and 3a
The lining material 1 shown in FIG. In this case, as shown in FIG. 6, the outer lining material 3 may be covered with the reinforcing fibers 11.

The inner lining material 2 and the outer lining material 3 may be separately impregnated with a thermosetting resin, and the inner lining material 2 may be inverted and inserted inside the outer lining material 3 by fluid pressure.

Next, a flow path facility rehabilitation method constructed using the lining material according to the present invention will be described with reference to FIGS. 7 to 9 are sectional views showing a rehabilitation method for a pipeline in the order of steps.

In the figure, reference numeral 12 denotes a pipeline such as a sewer pipe buried underground. Rehabilitation of the pipeline 12 is performed in the following procedure.

That is, when the pipe 12 is rehabilitated, after the lining material 1 is drawn into the pipe 12 as shown in FIG. 7, for example, compressed air is supplied into the lining material 1. Then, the lining material 1 expands as shown in FIG. 8, but at this time, the resin adsorbing material 2a of the inner lining material 2 is formed of a nonwoven fabric having a characteristic of expanding under a fluid pressure as described above. Internal lining material 2
Adheres to the external lining material 3.

However, since the resin adsorbing material 3a of the external lining material 3 is made of a nonwoven fabric having a characteristic that it is difficult to expand even when subjected to the fluid pressure as described above, as shown in FIG. A circular space S is formed between the inner wall of the pipe 12 and the inner wall.

If a hardening heat medium such as hot water, heated air, a hot water shower, or steam is supplied into the lining material 1 while maintaining the above state, the lining material 1 is heated by the hardening heat medium. Then, the thermosetting resin impregnated therein hardens. Therefore, the inner wall of the conduit 12 is lined with the hardened lining material 1.

When the lining material 1 is hardened as described above, a plurality of injection holes (not shown) are formed in the lining material 1 from the inner surface side.
3 is injected into the space S. Then, as shown in FIG. 9, the grouting material 13 is filled in the space S formed between the lining material 1 and the inner wall of the pipe 12.

Here, as the grouting material 13,
Resin mortar based on thermosetting resin such as unsaturated polyester or epoxy resin, mortar based on cement, or a mixture of filler such as fine sand, fine stone, glass beads, aluminum hydroxide A mixture is used.

When the grouting material 13 filled in the space S formed between the lining material 1 and the inner wall of the conduit 12 is hardened, the grouting material 13 causes the lining material 1 and the conduit to harden. 12 are integrated. In this case, since the plurality of grouting material anchors 6 attached to the outer surface of the lining material 1 are fixed in the space S by the grouting material 13, the lining material 1 and the pipe are fixed by the anchor effect of these grouting material anchors 6. The road 12 is more reliably integrated.
In the lining material 1, the inner lining material 2 and the outer lining material 3 are integrated by the anchor effect of the lining material anchor 7 interposed therebetween.

As described above, in the present embodiment, the lining material 1 and the conduit 12 are integrated by the grouting material 13, and the unification is further strengthened by the anchor effect of the grouting material anchor 6. Therefore, the load acting on the lining material 1 is received by both the lining material 1 and the pipe 12, and the load that the lining material 1 should receive is reduced.

Therefore, in the structural design, it is possible to adopt a method in which the pipe 12 and the lining material 1 are considered to be integrated, and a load is borne by both of them, and the load on the lining material 1 is reduced. As a result, the required thickness of the lining material 1 can be kept small. When the thickness of the lining material 1 is suppressed to a small value in this manner, handling of the lining material 1 in rehabilitation work is facilitated, workability is enhanced, and cost reduction of the lining material 1 is achieved, thereby improving economic efficiency. .

Further, even when the conduit 12 has no structural strength, the conduit 12 is
The same effect as described above can be obtained by integrating the above.

As a method for inserting the lining material 1 into the pipe 12, as shown in FIG. 10, after the external lining material 3 is drawn into the pipe 12,
A method may be adopted in which the internal lining material 2 is inverted and inserted into the inside of the device by fluid pressure.

By the way, the method of the present invention can be similarly applied to a manhole 14 having a complicated shape as shown in FIG.
Is integrated by the grouting material 13 and the grouting material anchor 6, so that the thickness of the lining material 1 can be suppressed to be small and the workability and economic efficiency can be improved as described above.

As shown in FIG. 12, when there is water leakage in the pipeline 12, a barrier layer 15 is provided between the inner wall of the pipeline 12 and the lining material 1, and the barrier layer 15 and the lining material are provided. The grouting material 13 may be filled in the space S between the two. In the present embodiment, the barrier layer 15 is formed by coating the outer surface of the nonwoven fabric with a plastic film. However, the barrier layer 15 may be formed of a nonwoven fabric or a woven fabric alone or a composite of these and a plastic film. good.

By the way, in the above embodiment, the grouting material anchor 6 and the lining material anchor 6 are connected by the bolt 8, but they may be connected by rivets, ropes, threads or strings.

In the example shown in FIG. 13, a bag-shaped bolt 16 is passed through the outer lining material 3 of the lining material 1 and fastened with a lining material anchor, and is fixed by another bolt 17 screwed to the bolt. Anchor 1
8 may be attached. In FIG. 13, 11 is a reinforcing fiber, 12 is a pipeline, and 13 is a grouting material.

In the example shown in FIG. 14, the grouting material anchor itself and a connecting member for connecting the grouting material anchor and the lining material anchor 7 are constituted by ropes 19. Knot part 19
a constitutes a grouting material anchor. As described above, in the lining material 1 in which the grouting material anchor is formed of the rope 19, the rope 19 is not covered with the thermosetting resin before the rope 19 is formed of the plastic film 3b.
After being impregnated with a thermosetting resin, the portion of the plastic film 3b covering the rope 19 is cut and the knot portion 19 of the rope 19 is cut.
a is exposed to the outside. In FIG. 14, reference numeral 12 denotes a pipe, 13 denotes a grouting material, and 20 denotes a washer.

[0046]

As apparent from the above description, according to the present invention, an uncured curable resin is impregnated into a resin adsorbent having a multilayer structure of at least two layers inside and outside, and is inserted into the flow path facility. In a state where the grouting material anchor disposed on the outer surface side of the resin adsorbent located in the outermost layer and the lining material anchor disposed on the inner surface side are joined in the flow path facility, To apply a fluid pressure to the inside of the flow path facility lining material to expand the flow path facility lining material, and to cure the curable resin impregnated in the flow path facility lining material while maintaining the state. Later, the space between the inner wall of the flow path facility and the flow path facility lining material was filled with a grouting material to cure it,
The flow path facility and the flow path facility lining material are integrated to reduce the burden of the lining material, the required thickness is reduced, and the handling of the flow path facility lining material in rehabilitation work becomes easier and the workability is improved. In addition, the cost of the flow path facility lining material can be reduced and the effect of increasing the economy can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a channel facility lining material according to the present invention.

FIG. 2 is a cross-sectional view showing a method for manufacturing an internal lining material.

FIG. 3 is a cross-sectional view showing a method for manufacturing an internal lining material.

FIG. 4 is a cross-sectional view showing a method for manufacturing an external lining material.

FIG. 5 is a cross-sectional view showing a method for manufacturing an external lining material.

FIG. 6 is a longitudinal sectional view showing an operation of impregnating a thermosetting resin.

FIG. 7 is a longitudinal sectional view showing a flow path facility rehabilitation method (an example applied to a pipeline) according to the present invention.

FIG. 8 is a longitudinal sectional view showing a flow path facility rehabilitation method (an example applied to a pipeline) according to the present invention.

FIG. 9 is a longitudinal sectional view showing a flow path facility rehabilitation method (an example applied to a pipeline) according to the present invention.

FIG. 10 is a longitudinal sectional view showing another embodiment of a method for inserting a lining material into a pipeline.

FIG. 11 is a longitudinal sectional view showing a flow path facility rehabilitation method (an example applied to a manhole) according to the present invention.

FIG. 12 is a longitudinal sectional view showing another embodiment of the flow path facility rehabilitation method (an example applied to a pipeline) according to the present invention.

FIG. 13 is a longitudinal sectional view showing another embodiment of the fixing structure of the grouting material anchor.

FIG. 14 is a longitudinal sectional view showing another embodiment of the fixing structure of the grouting material anchor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flow path facility lining material 2 Inner lining material 2a Resin adsorbent 2b Plastic film 3 External lining material 3a Resin adsorbent 3b Plastic film 6 Grouting material anchor 7 Lining material anchor 8 Bolt 9 Thermosetting resin 12 Pipe (flow path) 13) Grouting material 14 Manhole (flow path facility) 15 Barrier layer 16, 17 bolt 18 Grouting material anchor 19 Rope S Space

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 592004301 All Co., Ltd. 1-194, Hayashi, Tokorozawa-shi, Saitama 4 (72) Inventor Takao Kamiyama 31-27 Daikancho, Hiratsuka-shi, Kanagawa Shonan Synthetic Resin Co., Ltd. Inside the factory (72) Inventor Yasuhiro Yokoshima 175-3 Shinoyama, Ishishita-cho, Yuki-gun, Ibaraki Pref.Yokoshimanai (72) Inventor Shigeru Endo 2-12-4 Hanahata, Tsukuba, Ibaraki Prefecture Inventor Hiroyuki Aoki 1-194, Hayashi, Tokorozawa-shi, Saitama F-term in all four companies (reference) 4F211 AD05 AD12 AD16 AD20 AD24 AG03 AG08 AG25 AG26 AG28 AH43 AJ09 SA13 SC03 SD04 SD11 SD13 SD21 SD23 SG06 SH17 SH18 SH30 SJ22 SN03 SP12

Claims (7)

[Claims] 1. An uncured curable resin is impregnated in a resin adsorbent having a multilayer structure of at least two layers inside and outside, and the resin adsorbent is located in the outermost layer while being inserted into the flow path facility. A flow path facility lining material comprising a combination of a grouting material anchor provided and a lining material anchor provided on an inner surface side. 2. The method according to claim 1, wherein the outer surface of the resin adsorbent located at the outermost layer and the inner surface of the resin adsorbent located at the innermost layer are airtightly covered with a plastic film.
The lining material of the flow passage facility described in the above. 3. The lining material according to claim 1, wherein the grouting material anchor and the lining material anchor are connected by bolts and nuts, rivets, ropes, threads or strings. 4. An uncured curable resin is impregnated in a resin adsorbent having a multilayer structure of at least two layers inside and outside, and the resin adsorbent is positioned in the outermost layer while being inserted into the flow path facility. A flow path facility lining material formed by combining a grouting material anchor provided and a lining material anchor provided on the inner surface side is inserted into the flow path facility, and fluid pressure is introduced into the flow path facility lining material. To cause the flow path facility lining material to expand, and to cure the curable resin impregnated in the flow path facility lining material while maintaining the state, and then to allow the inner wall of the flow path facility and the flow path facility lining material to contact each other. A method of rehabilitating a flow channel facility, characterized by filling a grouting material into an interspace and curing the grouting material. 5. A method in which a barrier layer is provided between the inner wall of the flow path facility and the lining material of the flow path facility, and a space between the barrier layer and the lining material of the flow path facility is filled with the grouting material. The method for rehabilitating a flow channel facility according to claim 4, characterized in that: 6. The flow path facility rehabilitation method according to claim 4, wherein the grouting material is made of a thermosetting resin or cement alone or a mixture of these and a filler. 7. The method according to claim 5, wherein the barrier layer is composed of a nonwoven fabric or a woven fabric alone or a composite of these and a plastic film.