JP2926067B2 - Manhole lining material and manhole lining method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole lining material impregnated with a curable resin, and a manhole lining method constructed using the manhole lining material.

[0002]

2. Description of the Related Art When a pipeline such as a sewer pipe buried underground is deteriorated, a pipe lining for repairing the pipeline by lining the inner peripheral surface thereof without excavating the pipeline. The construction method is known.

[0003] The above-mentioned pipe lining method is a method in which a pipe lining material formed by impregnating a curable resin into a tubular resin absorbent material whose outer surface is coated with a highly air-tight plastic film or the like is placed in a pipe line by fluid pressure. While pressing it against the inner peripheral surface of the pipeline, and while maintaining that state, hardens the curable resin impregnated in the pipe lining material to apply lining to the inner peripheral surface of the pipeline. This is a method of repairing the pipeline. By the way, it is conceivable to apply the above-mentioned method to manhole lining as it is.

[0004] That is, as shown in FIG. 21, first, the upstream side of a manhole 112 of a pipe 111 such as a sewer pipe is blocked by a water stop plug 113, and the lining material 101 for the manhole is filled in the manhole 112 by, for example, fluid pressure. When the curable resin impregnated in the lining material 101 is cured while the lining material 101 is pressed against the inner wall of the manhole 112 after being inverted and inserted from the ground side, the inner peripheral wall of the manhole 112 is lined with the lining material 101. Is done. Until the lining operation is completed, sewage and the like flowing in the pipeline 111 are pumped up by the pump 140 arranged on the upstream side of the water stop plug 113 and flowed to another place.

However, as shown in FIG. 21, since the manhole 112 generally forms a reducer portion 112a whose upper end portion becomes narrower upward, it is difficult to manufacture the lining material 101. In other words, although it is relatively easy to process the resin absorbent alone according to the shape of the reducer portion of the manhole (reducer processing), an outer surface material such as a plastic film is hermetically sealed on the outer surface of the reduced resin absorbent. It is not easy to coat the surface, and wrinkles are generated on the outer surface material.

Further, the lining material 101 is
2, the end of the lining material 101 is hardened as shown in FIG.
Since it is left at the bottom (inverted portion) 112b in the inside 2, cutting and removal of the end portion is required, and much labor has been required.

Further, in the conventional lining method,
As described above, until the lining operation is completed, the sewage or the like flowing in the pipeline 111 must be pumped up by the pump 140 on the upstream side of the manhole 112 and flowed to another place, so that the operation is also difficult. .

Accordingly, the present applicant has previously proposed a manhole lining method shown in FIGS.
309276).

22 to 24 are sectional views showing a conventional manhole lining method in the order of steps. In this lining method, as shown in FIG.
11 sandwiching manhole 212 (manhole 21
Plugs 213, 2 on the upstream and downstream sides of
14, a water-supplying hose 215 is passed through both the water stop plugs 213 and 214, and the water stop plug 2
13 and the downstream side of the water stop plug 214 are connected by the water passage hose 215. In the portion between the water stop plugs 213 and 214 in the pipe 211, wood chips,
Filler 216 such as bran is filled.

[0010] By the way, at the upper end of the manhole 212, there is formed a reducer portion 212a which is squeezed upward. A manhole lining material 201 is inserted into the manhole 212 from the ground side. The upper end opening is a reversing nozzle 21 installed on the ground.
8 is attached to the outer periphery of the lower end.

Here, the lining material 201 is constituted by impregnating a thermosetting resin into a tubular resin absorbent material partly processed (reduced) so as to conform to the shape of the reducer portion 212a of the manhole 212. Have been.

An end of an inliner 219 made of a highly air-tight plastic tube is attached to the outer periphery of the lower end of the reversing nozzle 218 by being folded back.
When the insertion into the inside 12 is completed, water is injected from the water injection hose 220 into the inside of the folded portion of the inliner 219. Then, the inliner 219 is inserted downward in the lining material 201 while being inverted under the pressure (weight) of water.

When the inverted insertion of the inliner 219 into the lining material 201 is completed, the hot water hose 221 attached to the end of the inliner 219 is completed.
Is drawn into the inliner 219 as shown in FIG.

Next, as shown in FIG. 23, when a cap 222 is put on the upper end opening of the reversing nozzle 218 and the cap 222 is fixed, a closed space S is formed in the inliner 219.

The hot water hose 221 and the drain hose 223 are drawn into the closed space S, and the end of the drain hose 223 extending outside the closed space S is installed on the ground. It opens above the heated water tank 224.

A water supply pipe 225 extending from a lower portion of the hot water tank 224 is connected to an inlet of a boiler 226, and a hot water pump 227 is provided in the middle of the water supply pipe 225. One end of the hot water hose 221 is connected to the outlet side of the boiler 226.

An air hose 229 extending from a compressor 228 is connected to the cap 222, and a pressure gauge 2 for measuring the internal pressure of the closed space S.
30 is attached.

When the compressor 228 is driven to supply compressed air from the air hose 229 into the closed space S, the inliner 219 and the lining material 20 are removed.
1 is pressed against the inner peripheral wall of the manhole 212 by the pressure of the compressed air.

Next, if the hot water pump 227 and the boiler 226 are driven while maintaining the above state, the water in the hot water tank 224 is supplied to the boiler 226 by the hot water pump 227, and is heated to a predetermined temperature by the boiler 226. Then, it is supplied into the closed space S through the hot water hose 221. That is, the hot water flowing through the hot water hose 221 is jetted in a shower shape into the closed space S from a plurality of injection ports opened to a portion facing the closed space S of the hot water hose 221 to be used for heating the lining material 201.

The hot water whose temperature has fallen due to the heating of the lining material 201 falls and accumulates at the bottom of the enclosed space S. The accumulated hot water is pressurized by the internal pressure of the enclosed space S and drained by a drain hose 223. Through the hot water tank 224, and is again supplied to the boiler 226 by the hot water pump 227 and heated, and thereafter, the same operation as described above is repeated.

As described above, when the hot water is circulated and showered from the hot water hose 221, the lining material 201 is heated and the thermosetting resin impregnated therein is uniformly cured. When the thermosetting resin impregnated in the lining material 201 is cured as described above, the inliner 219 is pulled upward and removed from the lining material 201 as shown in FIG. Then, the manhole 212
Is lined with a hardened lining material 201 and repaired.

In a series of lining operations from the insertion of the manhole lining material 201 into the manhole 212 to the removal of the inliner 219 as described above, a fluid such as sewage passes through a water passage hose 215 to supply a pipe. Since the water flows directly from the upstream side to the downstream side in the passage 211, the work of pumping sewage and the like to the other side by the pump on the upstream side of the manhole as in the related art becomes unnecessary, and the workability is further improved.

After the series of lining operations described above is completed, the water stop plugs 213 and 214 and the water passage hose 215 are removed from the inside of the pipe 211, and the filler 216 remaining in the pipe 211 is drained by sewage or the like. Accordingly, the curable resin dropped onto the filler 216 during the lining operation also flows away together with the filler 216 because the resin flows downstream through the pipe 211. For this reason, the curable resin does not drip into the duct 211 and is not cured, and the work of removing the cured resin is not required.

In the manhole lining method described above, the lining material 201 and the inliner 21
9, the resin absorbent constituting the lining material 201 can be relatively easily reduced, and the production of the lining material 201 can be simplified.

Further, instead of the inliner 219 being integrally and reversely inserted into the manhole 212 together with the lining material 201, the inliner 219 is inserted into the lining material 201 after the lining material 201 is inserted into the manhole 212. The lining material 20
The one end portion is not hardened and remains at the bottom (inverted portion 212b) in the manhole 212, so that the cutting and removing work of the end portion is not required, and the workability is further improved.

[0026]

However, in the conventional manhole lining method, since the tubular manhole lining material 201 is used, the bottom (inverted portion) of the manhole 212 cannot be lined with the lining material 201. There was a problem.

In the conventional manhole lining method, when compressed air is supplied into the closed space S after the inversion of the inliner 219 into the lining material 201 is completed, the reducer 212a of the lining material 201
The compressed air pressure P acts vertically on the part pressed by the portion, but the vertical component P ₁ (= P · sin) of the compressed air pressure P
θ: θ has a problem that the lining material 201 is lifted upward by the spread angle of the reducer portion 212a).

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a lining material for manholes, which can also line the bottom of the manhole and can prevent upward lifting due to fluid pressure. And a manhole lining method.

[0029]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 is characterized in that a manhole lining material inserted from the ground into a manhole without being inverted and provided for lining the manhole, A closed bottom portion whose outer peripheral surface is covered with a highly airtight plastic film and which becomes flat when a fluid pressure is applied by inserting a highly airtight inliner that forms a separate enclosed space therein. And, in a bag-shaped resin absorbent material having a reducer processing part formed in a shape along the reducer part of the manhole,
It is characterized by being impregnated with a curable resin.

According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of the resin absorbents are overlapped to form a multilayer structure, and the thickness of the peripheral wall is increased stepwise in the depth direction of the manhole. It is characterized by the following.

According to a third aspect of the present invention, in the first aspect of the present invention, the peripheral wall of the resin absorbent in which a polyester resin is impregnated in a polyester non-woven fabric is formed into an irregular shape or a corrugated plate, and the convex portion or the corrugated plate The thickness of the plate is increased in the depth direction of the manhole.

According to a fourth aspect of the present invention, there is provided a manhole lining material which is inserted into the manhole from the ground without being inverted, and is used for lining the manhole.
A closed bottom portion whose outer peripheral surface is covered with a highly airtight plastic film and which becomes flat when a fluid pressure is applied by inserting a highly airtight inliner that forms a separate enclosed space therein. After inserting a manhole lining material, which is made by impregnating a curable resin into a bag-shaped resin absorbent material having a reducer-processed portion formed into a shape along the reducer portion of the manhole, into the manhole, An airtight tubular inliner having a longer length and a larger surface area than the lining material is invertedly inserted into the manhole lining material by fluid pressure, and the open ends of the inliner are closed to form a closed space therein. The manhole lining material and the inliner are pressed against the inner wall of the manhole by applying fluid pressure to the closed space, and the After curing the curable resin impregnated in the lining material for the hole, characterized in that removing the inliner.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, the manhole lining material is pressurized by air pressure, and the curable resin impregnated in the manhole lining material is a thermosetting resin. It is characterized in that the thermosetting resin is circulated by being showered from a hot water hose drawn into the closed space, and a part of the thermosetting resin is heated and hardened by hot water stored at the bottom of the lining material for manholes.

Therefore, according to the invention of claim 4 constructed using the manhole lining material of claims 1 to 3, not only the inner peripheral wall of the manhole but also the bottom portion is lined with the manhole lining material. When the fluid pressure acts on the reducer portion of the manhole when the fluid pressure is applied to the enclosed space after the inversion of the inliner into the lining material is completed, the lining material may be lifted upward by the fluid pressure acting on the reducer portion of the manhole. Since this is prevented by the downward force based on the fluid pressure acting on the bottom of the lining material, the lining operation can be performed stably. Further, since the manhole lining material according to the present invention is formed separately from the inliner, the reducer processing of the lining material is relatively easily performed, and the production of the lining material is simplified.

According to the fifth aspect of the present invention, the thermosetting resin impregnated in the lining material is circulated while being showered from the hot water hose, and a part of the thermosetting resin is efficiently collected by the hot water collected at the bottom of the lining material for manholes. Since the thermosetting resin is heated, the thermosetting resin is heated with a small amount of thermal energy and is uniformly cured, so that the size of the heating / circulating equipment can be reduced.

[0036]

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

FIG. 1 is a perspective view of a lining material for manholes (hereinafter simply referred to as a lining material) 1 according to the present invention. The lining material 1 is covered with a highly airtight plastic film 2 on its outer peripheral surface. A bag-shaped resin absorbent material 3 having a closed bottom 3a is impregnated with a thermosetting resin 4 (see FIG. 11), and an intermediate height portion 1a is provided at a reducer portion 12a of the manhole 12 (see FIG. 14). (Refer. Processing).

The resin absorbing material 3 is formed of an innermost member 3-1.
The member 3-2 is wound around and adhered to the outer periphery of the lower half of the member 3.
Further, another member 3-3 is wound around and adhered to the lower half outer periphery of the outer periphery of -2, and the thickness thereof is gradually increased in the depth direction of the manhole 12. or,
A plurality of rectangular members 3-4 are adhered to the step mounting portion on the outer peripheral surface of the resin absorbent 3, and the thickness of the step mounting portion of the resin absorbent 3 is set to be partially thick by these members 3-4. Have been.

The members 3-1 to 3-1 constituting the resin absorbing material 3
3-4 is polyester, nylon, polypropylene,
Nonwoven fabric such as acrylic or glass cloth, glass mat,
It is made of glass felt or a mixture of these and the above-mentioned nonwoven fabric. A ribbon-shaped glass cloth 5 (see FIG. 3) as a reinforcing material is provided on the outer periphery of the member 3-1 in the length direction (the depth of the manhole). Direction). Polyurethane, polyethylene or the like is used as the material of the plastic film 2 covering the outer surface of the resin absorbent 3, and the thermosetting resin 4 impregnated in the resin absorbent 3 is polyester resin, epoxy resin, or the like. Resin, vinyl ester resin and the like are used.

Next, a method for manufacturing the lining material 1 having the above configuration will be described with reference to FIGS. FIG.
11 are explanatory views showing a method of manufacturing the lining material 1 according to the present invention in the order of steps.

When the lining material 1 shown in FIG. 1 is manufactured, the nonwoven fabric 3-1 'shown in FIG. 2 is folded to form two sheets, which are formed into the shape of a manhole 12 (see FIG. 14). Then, as shown in FIG. Then, a plurality of ribbon-shaped glass cloths 5 are bonded to the outer surface of the nonwoven fabric 3-1 'in the length direction (the depth direction of the manhole 12). The glass cloth 5 is for suppressing the entire elongation of the lining material 1 and stabilizing the dimensions of the lining material 1, and may be incorporated in the nonwoven fabric 3-1 'in advance.

Next, the bottom of the nonwoven fabric 3-1 'is folded so as to form a square as shown in FIG. 4, and then the bottom of the square is cut off at the vertex as shown in FIG. The part A and the part B are folded so as to be in contact with each other, and the periphery of the folded part is welded or bonded. Then, the non-woven fabric 3-
The bottom of 1 ′ is folded with the dashed line c in FIG. 5 as a border so that the sides C and D overlap each other to obtain the bag-shaped member 3-1 shown in FIG.

When the bag-shaped member 3-1 is obtained as described above, as shown in FIG. 6, a band-shaped nonwoven fabric 3-2 'is wound around the lower half of the member 3-1 and welded or welded. Glued,
The member 3-2 is placed on the outer periphery of the lower half of the member 3-1. Similarly, as shown in FIG. 7, a band-shaped nonwoven fabric 3-3 'is wound around the lower half of the member 3-2 and welded or adhered thereto, and the member 3-2 is wound around the outer periphery of the lower half of the member 3-2. 8, the resin absorbent 3 composed of the members 3-1, 3-2, and 3-3 is obtained, and the thickness of the resin absorbent 3 is set to the members 3-2, 3-3.
Accordingly, the thickness gradually increases in the depth direction of the manhole.

When the resin absorbent 3 is obtained as described above, as shown in FIG. 8, a plurality of rectangular members 3-4 are adhered to the step mounting portion on the outer periphery, and these rectangular members 3-4 are bonded.
4, the thickness of the step mounting portion of the resin absorbent 3 is set to be partially thick.

Next, after the entire bag-shaped resin absorbent material 3 is flattened, as shown in FIG. 9, the entire resin absorbent material 3 is covered with a bag-shaped plastic film 2 having one end closed. One end of the absorbing material 3 is connected to a vacuum pump 7 through a vacuum hose 6.
Connect to Then, when the vacuum pump 7 is driven to evacuate the resin absorbing material 3, the plastic film 2 adheres to the resin absorbing material 3 as shown in FIG. If the plastic film 2 is moved at a predetermined speed in the direction of the arrow (rightward) in FIG. 10, the plastic film 2 is heated, and the plastic film 2 is welded to the outer periphery of the resin absorbent material 3 from one end to the other end.
When the plastic film 2 is welded over the entire length of the resin absorbent 3, the outer peripheral surface of the resin absorbent 3 is covered with the plastic film 2 as described above.

When the outer peripheral surface of the resin absorbent 3 is covered with the plastic film 2 as described above, the resin absorbent 3 is impregnated with a thermosetting resin in the manner shown in FIG.

That is, while the thermosetting resin 4 accommodated in the resin container 9 is injected from one end opening of the resin absorbing material 3,
When the vacuum pump 7 is driven to evacuate the resin absorbent 3, the thermosetting resin 4 is uniformly impregnated throughout the resin absorbent 3 by the negative pressure generated in the resin absorbent 3,
Here, the lining material 1 according to the present invention shown in FIG. 1 is obtained.

As described above, the lining material 1
Is obtained, so that the thermosetting resin 4 impregnated in the resin absorbing material 3 of the lining material 1 is not cured by heat.
The lining material 1 is immersed in ice water in a state where the resin film 3 is covered with the plastic film 2 and transported to the construction site.
Is covered with the plastic film 2 having high airtightness, so that intrusion of ice water into the resin absorbent 3 is prevented,
The thermosetting resin 4 impregnated in the resin absorbent 3 is kept in a stable uncured state.

Then, when the lining material 1 is carried into the construction site and the closed end of the plastic film 2 is cut and opened in a straight line when performing the lining work using the lining material 1, the end (bottom portion) of the resin absorbent material 3 is obtained. 3) is opened, and the lining material 1 is spread in a bag shape as shown in FIG.

Note that, depending on the shape of the manhole, FIG.
The lining material 1 shown in FIG. or,
In the manufacturing process of the lining material 1, in order to obtain a bag-shaped resin absorbent material 3 having a closed bottom, as shown in FIG.
You may make it close with. In this case, the circular nonwoven fabric 3-
5 is a tubular non-woven fabric 3 whose periphery is sewn as shown in the figure.
-1 or by welding or bonding.

Next, the manhole lining method according to the present invention, which is constructed using the lining material 1 obtained as described above, will be described with reference to FIGS. still,
14 to 17 are sectional views showing the manhole lining method according to the present invention in the order of steps, and FIG.
19 is a sectional view taken along line YY of FIG.

In the lining method according to the present invention,
As shown in FIG. 14, water blocking plugs 13 and 14 are interposed at portions (two locations on the upstream side and the downstream side of the manhole 12) sandwiching the manhole 12 in the pipe line 11.
A water passage hose 15 is passed through 14, and the upstream side of the water stop plug 13 in the pipe line 11 and the downstream side of the water stop plug 14 are connected by the water passage hose 15. Then, a portion sandwiched between the water stop plugs 13 and 14 in the pipeline 11 is filled with a filler 16 such as wood chips and bran. When lining the manhole 12, a step (not shown) attached to the inner peripheral wall of the manhole 12 is cut and removed.

By the way, a reducer portion 12a which is squeezed upward is formed at an upper end portion of the manhole 12, and a lining material 1 is inserted into the manhole 12 from the ground side, and a bottom portion 1b of the reducer portion 12a is formed. It is set so as to abut on the bottom (inverting portion 12b (see FIG. 18)). Then, the upper end opening of the lining material 1 is attached to the outer periphery of the lower end of the reversing nozzle 18 supported by the stage 17 installed on the ground.

At the outer periphery of the lower end of the reversing nozzle 18, one end of a tubular inliner 19 made of a highly airtight plastic tube having a longer surface area and a larger surface area than the lining material 1 is folded. When the lining material 1 is inserted into the manhole 12 as described above, water is injected from the water injection hose 20 into the inside of the folded part of the inliner 19. Then, the inliner 19 is inserted downward in the lining material 1 while being inverted under the pressure (weight) of the water.

When the inverted insertion of the inliner 19 into the lining material 1 is completed, the inliner 1
The hot water hose 21 attached to the end of 9 is drawn into the inliner 9 as shown in FIG.

Next, as shown in FIG. 15, if the cap 22 is put on the upper end opening of the reversing nozzle 18 and fixed, the closed space S is formed in the inliner 19.

The hot water hose 21 and the drain hose 23 are drawn into the closed space S, and the end of the drain hose 23 extending outside the closed space S is installed on the ground. It opens above the hot water tank 24.

A water supply pipe 25 extending from the lower part of the hot water tank 24 is connected to an inlet of a boiler 26, and a hot water pump 27 is provided in the middle of the water supply pipe 25. One end of the hot water hose 21 is connected to the outlet side of the boiler 26.

The cap 22 is connected to an air hose 29 extending from a compressor 28, and is also provided with a pressure gauge 30 for measuring the internal pressure of the closed space S.

When the compressor 28 is driven to supply compressed air from the air hose 29 into the closed space S, the inner liner 19 and the lining material 1 are pressed against the inner peripheral wall of the manhole 12 by the pressure of the compressed air. You. At this time, the uncured liquid thermosetting resin 4 impregnated in the lining material 1 oozes out by the pressure of the compressed air and drops from the lower end of the lining material 1 onto the filler 16 such as wood chips and bran. .

Next, while maintaining the above state, boiler 2
6 and the hot water pump 27, the water in the hot water tank 24 is supplied to the boiler 26 by the hot water pump 27, heated to a predetermined temperature by the boiler 26, and then passed through the hot water hose 21 into the closed space S. Supplied. That is, the hot water flowing through the hot water hose 21 is jetted in a shower shape into the closed space S from the plurality of injection ports 21a opened to the portion facing the closed space S of the hot water hose 21 to be used for heating the lining material 1. .

Then, the warm water whose temperature has fallen due to the heating of the lining material 7 falls and accumulates at the bottom in the enclosed space S. The accumulated warm water is pressurized by the internal pressure of the enclosed space S and drained by the drain hose 23. The hot water is returned to the hot water tank 24 through the hot water pump 27 and is again supplied to the boiler 26 by the hot water pump 27 and heated. Thereafter, the same operation as described above is repeated.

As described above, when the hot water is circulated and showered from the hot water hose 21, the lining material 1 is heated and the thermosetting resin 4 impregnated therein is uniformly hardened. When the thermosetting resin 4 impregnated in the lining material 1 is cured in this way, as shown in FIG.
Pull the inliner 19 upward to remove the lining material 1
Remove from. Then, the inner peripheral wall and the bottom (inverted portion 12b) of the manhole 12 are lined and repaired by the hardened lining material 1.

Thereafter, as shown in FIGS. 17 to 19, a part of the lining material 1 covering a part of the pipe 11 is cut off, and the cut end is adhered with a putty such as epoxy resin to perform a series of lining operations. finish.

The manhole 1 which has become aging as described above
2 is repaired by lining with the lining material 1, but the thickness of the lining material 1 is
, T ₁ , t ₂ , and t ₃ are gradually increased in the depth direction (t ₁ <t ₂ <t ₃ ), so that the lining material 1 is not subjected to an external pressure that gradually increases in the depth direction of the manhole 12. Can withstand the strength sufficiently. And manhole 1
Although the lining 2 is aging, the thickness of the lining material 1 is partially increased by the rectangular members 3-4,
As shown in FIG. 8, if a step 31 for raising and lowering is attached to that portion, the step 31 is sufficiently firmly held by the thick portion of the lining material 1.

In the manhole lining method according to the present invention described above, not only the inner peripheral wall of the manhole 12 but also the bottom 12b can be lined with the lining material 1 and the inliner 19 can be used.
When the compressed air pressure is applied to the closed space S after the inverted insertion of the
Lining material 1 is lifted upward by the compressed air pressure acting on the reducer portion 12a of the lining material 1 because the downward force based on the compressed air pressure acting on the bottom 1b of the lining material 1 prevents the lining material 1 from being lifted. Can be performed stably.

In the present invention, since the lining material 1 and the inliner 19 are formed separately, the reduction processing of the lining material 1 is relatively easy, and the production of the lining material 1 is simplified. . And manhole 1
The diameter of the inliner 19 that is reversely inserted into the lining material 1 inserted into the lining material 2 is reduced by the reducing portion 1 of the lining material 1.
If the diameter is larger than 2a, even if wrinkles occur in the inliner, the inliner 1 is removed after the lining material 1 is cured, so that no problem occurs.

After a series of lining work is completed,
If the water stop plugs 13 and 14 and the water supply hose 15 are removed from the inside of the pipeline 11, the filler 16 remaining in the pipeline 11 flows downstream in the pipeline 11 due to sewage or the like. The curable resin 4 dropped on the filler 16
Also flows away with the filler 16. For this reason, the thermosetting resin 4 does not hang down in the pipeline 11 and hardens, and the work of removing the hardened resin 4 is not required.

Further, according to the manhole lining method according to the present invention, the thermosetting resin 4 impregnated in the lining material 12 is circulated by being showered from the hot water hose 21, and its shame is formed on the bottom of the lining material 1. The thermosetting resin 4 is efficiently heated by the pooled hot water.
Is hardened uniformly by being heated by a small amount of thermal energy. Therefore, downsizing of the heating / circulating equipment such as the boiler 26 and the hot water pump 27 can be achieved.

In the above embodiment, hot water showering was used as a method of heat-curing the thermosetting resin impregnated in the lining material. However, hot water injection, circulation, or steam heating was adopted. You may. Further, as the curable resin impregnated in the lining material, a photo-curable resin or the like can be used in addition to the thermosetting resin.

By the way, as shown in FIG. 20, the peripheral wall of the resin absorbing material 3 of the pipe lining material 1 is formed into an uneven shape or a corrugated plate, and the thickness of the convex portion or the corrugated plate is increased in the depth direction of the manhole 12. You may.

[0072]

As is apparent from the above description, claim 1
According to the invention as set forth in claim 4, which is constructed using the lining material for manholes of (3), not only the inner peripheral wall of the manhole but also the bottom can be lined with the lining material for manhole, and the lining of the inliner. Even if the lining material is lifted upward by the fluid pressure acting on the reducer portion of the manhole when the fluid pressure is applied to the closed space after the reverse insertion into the material, the fluid acting on the bottom of the lining material Since this is prevented by the downward force based on the pressure, the lining operation can be performed stably. or,
Since the lining material for manholes according to the present invention is formed separately from the inliner, the effect of reducing the lining material relatively easily and simplifying the production of the lining material can be obtained.

According to the fifth aspect of the present invention, the thermosetting resin impregnated in the lining material is circulated by being showered from the hot water hose, and a part of the thermosetting resin is efficiently collected by the hot water stored in the bottom of the lining material for manholes. Since the thermosetting resin is heated, the thermosetting resin is heated by a small amount of thermal energy and is uniformly cured, and therefore, an effect is obtained in that the size of the heating / circulating equipment can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lining material for manholes according to the present invention.

FIG. 2 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 3 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 4 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 5 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 6 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 7 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 8 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 9 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 10 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 11 is an explanatory view showing a method for manufacturing a lining material for manholes according to the present invention.

FIG. 12 is a perspective view of a lining material for manholes according to another embodiment of the present invention.

FIG. 13 is a partial perspective view of a lining material for manholes according to another embodiment of the present invention.

FIG. 14 is a sectional view showing a manhole lining method according to the present invention.

FIG. 15 is a sectional view showing a manhole lining method according to the present invention.

FIG. 16 is a sectional view showing a manhole lining method according to the present invention.

FIG. 17 is a sectional view showing a manhole lining method according to the present invention.

18 is a sectional view taken along line XX of FIG.

19 is a sectional view taken along line YY of FIG. 17;

FIG. 20 is a cross-sectional view illustrating a manhole lining method according to another embodiment of the present invention.

FIG. 21 is a cross-sectional view showing a manhole lining method according to Conventional Example 1.

FIG. 22 is a cross-sectional view showing a manhole lining method according to Conventional Example 2.

FIG. 23 is a cross-sectional view showing a manhole lining method according to Conventional Example 2.

FIG. 24 is a cross-sectional view showing a manhole lining method according to Conventional Example 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manhole lining material 2 Plastic film 3 Resin absorber 4 Thermosetting resin (curable resin) 11 Pipeline 12 Manhole 19 Inliner 21 Hot water hose S Closed space

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code FIB29L 23:00 (56) References JP-A-1-198325 (JP, A) JP-A-55-19575 (JP, A) Kaihei 4-336229 (JP, A) (58) Fields studied (Int. Cl. ⁶ , DB name) B29C 63/00-63/48 E02D 29/12 F16L 1/00 F16L 55/16-55/18

Claims (5)

(57) [Claims] 1. Inverted manhole from the ground
Man inserted without a man and used for manhole lining
A lining material for a hall, whose outer peripheral surface is covered with a highly airtight plastic film, and which has a high airtightness forming a separate closed space.
When the fluid pressure is applied by inserting the liner inside,
Closed bottom that becomes flat and reducer of manhole
A lining material for manholes, characterized by impregnating a curable resin into a bag-shaped resin absorbent material having a reduced-processed portion formed in a shape conforming to the above . 2. A multiplicity of superposed resin absorbents.
It has a layered structure, and the thickness of the peripheral wall is in the depth direction of the manhole.
The lining material for manholes according to claim 1, wherein the lining material is gradually thickened . 3. Polyester non-woven fabric made of polyester
2. The manhole according to claim 1 , wherein the peripheral wall of the resin absorbent material impregnated with fat is formed into an uneven shape or a corrugated shape, and the thickness of the convex portion or the corrugated plate is increased in the depth direction of the manhole. Lining material. 4. Inversion into the manhole from the ground
Man inserted without a man and used for manhole lining
A lining material for a hole, the outer peripheral surface is coated with a highly airtight plastic film, and a closed empty separate
Insert a highly airtight inliner that forms a gap
Closed bottom that becomes flat when fluid pressure is applied
And molded into a shape along the reducer of the manhole
After inserting a manhole lining material, which is made by impregnating a curable resin into a bag-shaped resin absorbent material with a reducer processing part , into the manhole , the manhole lining
The airtight tubular inliner with a longer surface area and a larger surface area than the lubricating material is inserted into the manhole lining material by fluid pressure, and the open ends of the inliner are closed to form a closed space inside them. While the manhole lining material and the inliner are pressed against the inner wall of the manhole by applying fluid pressure to the closed space,
A hardening resin impregnated in the lining material for the steel, and then removing the inliner. 5. The method according to claim 5, wherein the manhole lining material is pneumatically
In pressurized, the curable resin impregnated into the manhole lining material is a thermosetting resin, showering of the thermosetting resin, from the hot water hose drawn into said closed space
Circulating and part of it is manhole lining
The manhole lining method according to claim 4 , wherein the material is cured by heating with warm water accumulated at the bottom of the material .