JPH10305483A - Lining liner of pipe groove and lining construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a material cost while the number of persons at a machine on a road and in protection by a method wherein a tube-like air bag body in which a cross section is semicircular and both ends are hermetically sealed, and an air jack composed of an air intake valve and an exhaust valve are provided to an upper stream pipe opening side part. SOLUTION: In a liner main body 2D, an air jack 2E composed of an air bag 2E2 and its storing bag is provided to an upper stream pipe opening side part of a tube 2D1. The air bag storing bag is composed of a insertion opening for air bag wherein an end part of the tube 2D1 is folded back, sewn in a bag shape, and its part is opened. The air bag 2E2 is composed of a tube shaped air bag body wherein its cross section is semicircular, and both ends are hermetically sealed, and an intake valve 2E22 and an exhaust valve 2E23 which are fitted to its one side end surface. Further, an upper stream side end rope 2F and a down stream side rope end 2G are connected to a pipe opening part of the liner main body 2D, which is used when it is drawn into a sewage pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liner for lining a sewer suitable for lining the inner peripheral surface of a sewer pipe provided between an upstream manhole and a downstream manhole, and a lining using the liner. It concerns the construction method.

[0002]

2. Description of the Related Art Heretofore, this type is as follows. Various sewers buried underground are aging year by year, and various troubles have occurred in recent years due to an increase in traffic volume in urban areas, laying on soft ground, and the like. Damage due to aging and inflow of acidic water, earthquakes,
Land subsidence, water leakage from joints, infiltration, tree root intrusion,
The importance of pipe rehabilitation has been increasing in order to eliminate aging phenomena such as flow reduction due to sediments and extend the life of facilities. Many conventional lining methods to cope with such a situation include:
Some of the processes require a so-called water change operation, and others do not require a water change operation. 1. There are various types that require a water change operation, and among them, a method called an INS (in-situ form) method is widely adopted. This method uses an existing manhole to rebuild the buried pipe in a short time without digging the ground. The material (liner) impregnated with thermosetting resin is inverted and inserted into the pipe by water pressure. Finally, the inverted water in the pipe is heated by a boiler to harden the liner and to form a new pipe in the pipe. 2. Those that do not require water replacement work are roughly configured as follows. A. While joining pipes made of factory-made plastics, they are pushed into existing pipes and installed. B. There is also a construction method in which a PVC pipe is pushed into the existing pipe while making it using a pipe-making machine.

[0003]

The above-mentioned prior art has the following problems. 1. Problems that require water replacement work are as follows. In the water change, the openings (manholes) increase for each route in order to divert the drainage to other routes, the hoses for the diversion are exposed on the road, and the generator and vehicles are combined with traffic. Failure occurs. In addition, the noise from the water-replacement vehicle and the generator has an effect on the surroundings. If a large-capacity water change is required, the cost for the machine and the setting will increase, and this will be a serious problem for the construction. 2. Problems that do not require water replacement work are as follows. In any case, the inserted pipe is smaller than the existing pipe by at least one size, and the gap is filled with mortar and hardened, so that the cross section is reduced. The present invention has been made in view of such problems of the related art, and an object of the present invention is to provide one that can solve the above-described problems.

[0004]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. The first invention is a material 2C in which a thermosetting resin is impregnated in a polyester felt 2B sandwiched between films 2A.
In the liner main body 2D configured to have a size corresponding to the inner peripheral surface of the sewer pipe 1 to be treated, an air jack 2E is provided on the upstream pipe mouth side portion 2D2 of the tube 2D1, and the air jack 2E is a tube. 2D
1 comprises an air bag 2E2 attached to the upstream mouth side portion 2D2 by bonding or the like.
This is a liner for sewer lining composed of a tubular airbag body 2E21 having a semicircular cross section and both ends sealed, and an air supply valve 2E22 and an exhaust valve 2E23 attached to one end surface of the airbag body. .

[0005] In this case, it can be configured as follows. A. A material 2C in which a thermosetting resin is impregnated in a polyester felt 2B sandwiched between films 2A.
In the liner main body 2D configured to have a size corresponding to the inner peripheral surface of the sewer pipe 1 to be treated, an air jack 2E is provided at the upstream mouth opening side portion 2D2 of the tube 2D1, and the air jack 2E It is composed of a back storage bag 2E1 and the air bag 2E2,
The airbag storage bag 2E1 is formed by folding the end of the tube 2D1 and sewing it in a bag shape to form a bag-like body 2E11 formed in the circumferential direction of the tube, and air opened in a part of the bag-like body 2E11. The airbag 2E2 is composed of a back insertion opening 2E12. The airbag 2E2 has a tube-shaped airbag body 2E21 having a semicircular cross section and both ends sealed, and an air supply valve 2E22 attached to one end surface of the airbag body.
And an exhaust valve 2E23 and a support wheel 2E24 attached to the other end of the airbag body. The airbag 2E2 is inserted into the airbag storage bag 2E1 from the airbag insertion opening 2E12 and then stored in the airbag storage bag 2E1. This is a liner for lining a pipe where one end side of an airbag body in which an air supply pipe mounting port and an exhaust pipe mounting port are mounted in a support wheel 2E24 exposed from the bag to the outside is penetrated.

B. Upstream port side portion 2 of liner body 2D
The upstream end rope 2F is connected to D2, and the downstream rope end 2G is connected to the downstream mouth opening portion 2D3 of the liner body 2D.

The second invention is directed to an upstream manhole 1A and a downstream manhole 1B.
This is a sewer lining method comprising a first step to a fifth step having the following conditions in a sewer pipe 1 piped therebetween. First Step The liner 2 for lining a pipe is inserted from the upstream port 1C to the downstream port 1D. Second Step The air jack 2E of the liner 2 is fitted to the upstream port 1C, and the running water that has passed outside the pipe passes through the inside of the liner. Third Step After confirming that running water flows out of the liner 2, the downstream port opening side portion 2D3 of the liner 2 is squeezed and water pressure is applied to the inside of the liner. Adjust and maintain the required head at the side. Fourth step By securing a required head, the liner 2 is pressed against the sewer pipe 1 by the internal pressure while applying water pressure from the inner surface of the liner 2 toward the sewer pipe 1 with running water in the pipe to keep the inner surface circular. By holding this, the thermosetting resin generates heat by itself and starts to harden, and further holds and cures. Fifth Step After confirming the curing and curing, after the water level in the sewer pipe 1 has dropped, the downstream side and the upstream side of the liner 2 are cut to complete the mouth of the sewer pipe 1.

[0008] The third invention comprises an upstream manhole 1A and a downstream manhole 1B.
This is a sewer lining method comprising a first step to a fifth step having the following conditions in a sewer pipe 1 piped therebetween. First Step A guide 7 for securing the diameter is installed at the mouth of the sewer pipe 1. The configuration of the guide 7 for securing the diameter is the upstream port 1C of the sewer pipe 1.
, A block 7A configured to be attached to the surface on the side of the upstream human hole 1A, a circular hole 7B coinciding with the inner peripheral surface of the upstream pipe opening formed in the block 7A, and an upstream portion of the circular hole 7B. It comprises an outwardly extending guide edge 7C attached to the outer periphery on the side of the human hole exposed surface. Second Step The liner 2 is inserted from the upstream port 1C to the downstream port 1D. Third Step The bottom device 12 is installed in the downstream human hole 1B, and the air jack 2E set in the diameter securing guide 7 is enlarged to fit the liner 2 into the diameter securing guide. The mouth portion 2D3 is connected to the liner connection pipe 12B3 of the bottom device 12, and the running water that has passed outside the tube passes through the inside of the liner. The bottom device 12 is provided with a gantry 1 installed in a downstream human hole.
2A and a bottom bracket 12B.
Is composed of upstream and downstream frames 12A1 formed in a rectangular shape when viewed from the upstream human hole side, and a connecting rod 12A2 connecting these, and the bottom bracket 12B is suspended from the gantry 12A to the center of the gantry. Valve case 12B1 and flowing water port 12B2 opened on the surface of the valve case on the side of the upstream manhole.
And the connecting pipe 12B3 for the liner connected to the water outlet
And a valve plate 12B4 inserted so as to ascend and descend inside the valve case to regulate flowing water. Step 4 Check that running water comes out from the bottom fitting and close the valve.
A water pressure is applied to the inside of the liner 2 and a required water head is secured by a valve of a bottom fitting while checking a water level meter of the upstream manhole with a water level meter 14 provided in the upstream manhole, so that the liner 2 can be moved by flowing water in the pipe. Of the liner 2 is pressed against the sewer pipe 1 by the internal pressure, and the thermosetting resin self-heats to start curing by holding the liner, and then the state is maintained. And cure. Fifth step After the curing and curing are confirmed, the valve of the bottom fitting is released, and after the water level in the sewer pipe 1 has dropped, the downstream side and the upstream side are cut to finish the mouth of the sewer pipe 1.

In this case, it can be configured as follows. In the sewer pipe 1 piped between the upstream manhole 1A and the downstream manhole 1B, this is a sewer lining method comprising first to fifth steps having the following conditions. 1st process The guide roller 3 for opening parts is installed, the guide 7 for diameter securing is installed in the pipe mouth of the sewer pipe 1, the upstream side guide roller 6 is installed in the upstream manhole 1A, and it enters into the downstream manhole 1B. The downstream guide roller 8 is installed. The guide roller 3 for the opening has a roller 3B attached so as to surround the opening of the upstream human hole 1A using a gantry 3A installed at the opening of the upstream human hole 1A. A block body 7A configured to be attached to the surface of the upstream port 1C of the pipe 1 on the side of the upstream human hole 1A, and a circular hole 7B that matches the inner peripheral surface of the upstream port opened in the block body 7A. A guide edge 7C attached to the outer periphery of the circular hole 7B on the side exposed to the upstream human hole is provided. The configuration of the upstream guide roller 6 and the downstream guide roller 8 is as follows. The gantry 6A, 8A and guide rollers 6B, 8B attached to the upstream mouth portion or the downstream mouth portion of the gantry. Second Step The liner 2 is pulled out from the container 5, the wire 10 of the hoisting machine 9 is passed through the guide roller 8B, and fixed to the downstream rope end 2G of the liner 2, and the liner 2 is connected to the upstream port. After insertion from 1C to the downstream port 1D, the upstream end rope 2F is fixed, and then the downstream guide roller 8 is removed. Third Step: The bottom device 12 is installed in the downstream human hole 1B, and the downstream mouth side 2D3 of the liner body 2D is connected to the liner connection pipe 12B3 of the bottom device 12 and fixed with a band.
Compressed air is sent by an air hose 13 to the air jack 2E set in the diameter securing guide 7 with the air hose 13 so that the liner 2 fits into the diameter securing guide. Let through the inside. The bottom device 12 includes a gantry 12A installed in a downstream human hole and a bottom fitting 12B,
The gantry 12A includes an upstream frame 12A1 and a downstream frame 12A1, which are rectangular when viewed from the upstream human hole side, and a connecting rod 12A connecting these frames.
2, the bottom metal fitting 12B is a valve case 12B suspended from the gantry 12A to the center of the gantry.
1, a water flow port 12B2 opened on the surface of the valve case on the upstream side of the human hole, a liner connection pipe 12B3 connected to the water flow port, and inserted so as to move up and down in the valve case to adjust the flow water. A valve plate 12B4 and an operation rod 12B5 for operating the valve plate from the ground. Step 4 Check that running water comes out from the bottom fitting and close the valve.
A water pressure is applied to the inside of the liner 2 and a required water head is adjusted and maintained by a valve of a bottom fitting while checking a water level meter of the upstream manhole with a water level meter 14 provided in the upstream manhole. The circular surface is kept circular by applying water pressure from the inner surface to the sewer pipe 1 and the liner 2 is pressed against the sewer pipe 1 by the internal pressure, and by holding this, the thermosetting resin generates heat and starts curing. After that, the condition is maintained and cured. Fifth step After the hardening and curing are confirmed, the valve of the bottom fitting is released, and the water level in the sewer pipe 1 is lowered. Finish.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. Reference numeral 1 denotes a well-known sewer pipe provided between the upstream manhole 1A and the downstream manhole 1B, and the present invention performs a lining treatment on the inner peripheral surface of the sewer pipe 1. In the figure, 1C is the upstream mouth of the sewer pipe 1, 1
D is a downstream mouth of the sewer pipe 1. The first invention relates to a liner for lining a sewer, and the second and third inventions relate to a lining method for a sewer.

The construction of the liner 2 for lining a pipe is as follows. A liner body 2D having a size corresponding to the inner peripheral surface of a sewer pipe 1 to be treated is provided with a material 2C in which a thermosetting resin is impregnated in a polyester felt 2B sandwiched between films 2A in a sandwich shape. An air jack 2E is provided in the upstream mouth side portion 2D2 of 2D1, and the air jack 2E is
The airbag 2E2 is composed of an airbag 2E21 which is attached to the upstream tube mouth side portion 2D2 of the tube 2D1 by adhesion or the like. Supply valve 2E22 and exhaust valve 2 attached to one end face of
E23.

The liner 2 for lining a pipe can be constructed as follows. That is, the liner 2 is
A liner body 2D having a size corresponding to the inner peripheral surface of a sewer pipe 1 to be treated is provided with a material 2C in which a thermosetting resin is impregnated in a polyester felt 2B sandwiched between films 2A in a sandwich shape. An air jack 2E is provided on the upstream mouth side portion 2D2 of 2D1.
Is provided. The air jack 2E is composed of an airbag storage bag 2E1 and the airbag 2E2. The airbag storage bag 2E1 is formed by folding the end of the tube 2D1 and sewing it in a bag shape in the circumferential direction of the tube. Bag-like body 2E11 and this bag-like body 2E11
Of the air bag 2E12. The airbag 2E2 is a tubular airbag body 2E21 having a semicircular cross section and both ends sealed.
, An air supply valve 2E22 and an exhaust valve 2E23 attached to one end surface of the airbag body, and a support wheel 2E24 attached to the other end of the airbag body.

Therefore, after the airbag 2E2 is inserted into the airbag storage bag 2E1 from the airbag insertion opening 2E12, the air supply pipe mounting port and the air supply pipe mounting hole are inserted into the support wheel 2E24 exposed to the outside from the airbag storage bag. One end side of the airbag body to which the exhaust pipe attachment port is attached is penetrated.

Further, when the liner is drawn into the sewer pipe, the upstream pipe mouth side portion 2D2 of the liner body 2D is
An upstream end rope 2F is connected so as not to be pulled in more than necessary. Furthermore, the liner body 2
The downstream rope end 2G used when the liner is drawn into the sewer pipe is connected to the downstream pipe mouth side portion 2D3 of D. That is, a wire is attached to the downstream rope end 2G as described later.

A pipe lining method according to a second invention will be described. First Step The liner 2 is inserted from the upstream port 1C to the downstream port 1D. Second Step The air jack 2E of the liner 2 is fitted to the upstream port 1C, and the running water that has passed outside the pipe passes through the inside of the liner. Third Step After confirming that running water flows out of the liner 2, the downstream port opening side portion 2D3 of the liner 2 is squeezed and water pressure is applied to the inside of the liner. Adjust and maintain the required head H on the side. Fourth step By securing a required head, the liner 2 is pressed against the sewer pipe 1 by the internal pressure while applying water pressure from the inner surface of the liner 2 toward the sewer pipe 1 with running water in the pipe to keep the inner surface circular. By holding this, the thermosetting resin generates heat by itself and starts to harden, and further holds and cures. Fifth Step After confirming the curing and curing, after the water level in the sewer pipe 1 has dropped, the downstream side and the upstream side of the liner 2 are cut to complete the mouth of the sewer pipe 1.

Next, a pipe lining method according to a third invention will be described. First Step This step relates to the installation of equipment necessary for inserting the liner 2 and includes the following steps. A. An opening guide roller 3 is provided. This is to prevent the liner 2 from rubbing against the opening of the upstream human hole 1A. Thus, in the configuration of the guide roller 3 for the opening, the roller 3B is attached so as to surround the opening of the upstream human hole 1A by using a gantry 3A installed at the opening of the upstream human hole 1A. B. The carry-in roller 4 is installed. That is, container 5
A loading roller 4 having a roller for moving the liner is installed from the base to the base 3A of the guide roller 3 for the opening. C. A diameter securing guide 7 is installed at the mouth of the sewer pipe 1. This is because the liner 2 is not drawn into the sewer pipe 1 and the liner 2 is fitted to the mouth of the sewer pipe 1. a. The configuration of the diameter securing guide 7 is as follows. A block body 7A configured to be attached to a surface on the upstream manhole 1A side of an upstream mouth 1C of the sewer pipe 1, and a circular hole 7 that matches the inner peripheral surface of the upstream mouth opened in the block 7A.
B and an outwardly extending guiding edge 7C attached to the outer periphery of the circular hole 7B on the side of the surface exposed to the upstream human hole. D. An upstream guide roller 6 is installed in the upstream human hole 1A,
The downstream guide roller 8 is installed in the downstream human hole 1B. This is to prevent the liner 2 from rubbing against each projection. a. The configuration of the upstream guide roller 6 and the downstream guide roller 8 is as follows. The gantry 6A, 8A and guide rollers 6B, 8B attached to the upstream mouth portion or the downstream mouth portion of the gantry. E. FIG. The hoisting machine 9 is installed. That is, the hoisting machine 9 having the liner retracting winch 9A and the like is set above the downstream human hole 1B.

Second Step This step relates to the insertion of the liner 2,
It consists of the following steps. A. Pull out the liner 2 from the container 5 and wire 10
Prepare In this case, the air jack 2E2 is set in the airbag storage bag 2E1 of the liner 2. B. The wire 10 of the hoisting machine 9 is passed through the guide roller 8B and is fixed to the downstream rope end 2G of the liner 2. C. Until liner 2 enters upstream port 1C, wire 1
0 is slowly wound up and inserted at a constant speed up to the downstream port 1D. D. The upstream end rope 2F is fixed. That is, the liner 2 is prevented from flowing by running water. E. FIG. The downstream guide roller 8 is removed.

Third Step This step relates to the insertion and mounting of the liner 2 and comprises the following steps. A. The bottom device 12 is installed in the downstream human hole 1B. a. The configuration of the bottom device 12 is as follows. The gantry 12A includes a gantry 12A installed in the downstream human hole and a bottom fitting 12B. The gantry 12A has a rectangular upstream and downstream frame 12A1 as viewed from the upstream human hole side, and a connecting rod 12A2 for connecting the frames. The bottom fitting 12B is provided with a valve case 12B1 suspended from the gantry 12A at the center of the gantry, a flowing water port 12B2 opened on a surface of the valve case on the side of the upstream manhole, and a flowing water port. It is composed of a connected liner connecting pipe 12B3, a valve plate 12B4 inserted so as to ascend and descend inside the valve case and regulate flowing water, and an operation rod 12B5 for operating the valve plate from the ground. B. The downstream front side portion 2D3 of the liner body 2D is connected to the liner connection pipe 12B3 and fixed with a band. C. Air jack 2 set on diameter securing guide 7
Compressed air is sent to E by an air hose 13, and the liner is fitted to this caliber securing guide. 13A is a compressor. D. The running water that has passed outside the pipe passes through the inside of the liner pressed by the air jack.

Fourth Step This step relates to curing and curing after the insertion and mounting of the liner 2 and comprises the following steps. A. Check that running water comes out from the bottom fitting, close the valve and apply water pressure inside the liner. B. Attach the water level gauge 14 to the upstream manhole to check the required head. C. Adjust the water head with the valve of the bottom fitting while checking the water level gauge at the upstream manhole. D. Always check the water level. By securing the water head (by the bottom valve), the circular surface can be maintained (made possible) by applying water pressure from the inner surface of the liner to the sewer pipe 1 with running water in the pipe. E. FIG. Cure. The liner is pressed against the sewer pipe 1 by the internal pressure, and by holding the liner, the thermosetting resin self-heats and starts curing. Further, by holding and curing the liner, the liner is formed while maintaining the strength (creep, thickness, elasticity, etc.) of the liner itself. F. After confirming curing and curing, release the valve of the bottom fitting. G. FIG. After the water level in the sewer pipe 1 decreases, the downstream side is cut first before the downstream side. H. Finish the mouth of the sewer pipe 1.

[0020]

【Example】

A. The material of the film 2A in the liner 2 is as follows. Use a polyurethane film. (Since the film alone is weak, 1.5% of polyester felt
It is used after coating at m / m and 3.0 m / m. B.). The polyester felt 2B in the liner 2 has three types of 3.0, 4.5, and 6.0 m / m, and adjusts the thickness (depending on required strength) of the liner. C. The material of the thermosetting resin in the liner 2 is as follows. An ester reaction is carried out based on an unsaturated acid and a dihydric alcohol. Rigoluck 15-3TN-S (manufactured by Showa Polymer Co., Ltd.) 2. Polyset 2520PT (manufactured by Hitachi Chemical) Chemtron B3003 (made in the United States) is available.

[0021]

Since the present invention is configured as described above, the following effects can be obtained. The effects of the liner 2 of the first invention are as follows. Conventionally, heating has been promoted by using an in-vehicle boiler. However, since the thermosetting resin is naturally cured by self-heating, the number of machines on the road and the number of personnel required for curing can be reduced. Further, the liner for the head (to maintain the water pressure) can be shortened, and the line pressure can be reduced by the existing manhole to maintain the water pressure, so that the material cost can be reduced. The effects of the lining method of the second and third inventions are as follows. This eliminates the need for large-scale water-replacement machinery and equipment in the surrounding area, and further eliminates the need for boilers (boiler cars, water trucks, etc.) to cure at room temperature, which not only saves expenses but also alleviates traffic obstacles. There are many advantages such as noise prevention.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a state of a sewer pipe obtained by the present invention.

FIG. 2 is a perspective view of a main part of the liner viewed from a plane direction.

FIG. 3 is a perspective view of a main part of a liner according to another embodiment as viewed from a plane direction.

FIG. 4 is a perspective view of an airbag.

FIG. 5 is an enlarged perspective view of a main part of an airbag in the liner.

FIG. 6 is an enlarged vertical sectional view of a main part for explaining a material of the liner.

FIG. 7 is a longitudinal sectional view for explaining a liner insertion step in the construction method.

FIG. 8 is a perspective view illustrating a state in which a diameter securing guide is attached to an upstream pipe opening.

FIG. 9 is a vertical cross-sectional view of a diameter securing guide.

FIG. 10 is a perspective view in which a part of the bottom device is cut away.

FIG. 11 is a perspective view in which a part of a valve portion in the bottom device is cut away.

FIG. 12 is a longitudinal sectional view for explaining a liner curing step in the construction method.

[Explanation of symbols]

Reference Signs List 1 Sewer pipe 1A Upstream manhole 1B Downstream manhole 1C Upstream mouth of sewer pipe 1D Downstream mouth of sewer pipe 2 Liner for lining 2A Film 2B Polyester felt 2C Material impregnated with thermosetting resin 2D Liner body 2E Air jack 2E1 Airbag storage bag 2E11 Bag-like body 2E12 Airbag insertion opening 2E2 Airbag 2E21 Airbag body 2E22 Air supply valve 2E23 Exhaust valve 2E24 Support wheel 2F Upstream end rope 2G Downstream rope end 3 Guide roller for opening 4 Loading Roller 5 Container 6 Upstream guide roller 7 Guide for securing diameter 8 Downstream guide roller 9 Hoisting machine 10 Wire 12 Bottom device 13 Air hose 14 Water level gauge

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI B29K 105: 08

Claims (6)

[Claims] 1. A material (2C) in which a thermosetting resin is impregnated into a polyester felt (2B) sandwiched between films (2A) in a sandwich shape is applied to the inner peripheral surface of a sewer pipe (1) to be treated. In the liner body (2D) configured to have the corresponding dimensions, an air jack (2E) is provided at the upstream mouth opening side portion (2D2) of the tube (2D1), and the air jack (2E) is connected to the tube (2D).
1) An air bag (2E2) attached to the upstream port side (2D2) by bonding or the like, and the air bag (2E2) is a tubular air bag body having a semicircular cross section and both ends sealed. (2E21) and a liner for sewer lining, comprising: an air supply valve (2E22) and an exhaust valve (2E23) attached to one end surface of the airbag body. 2. A material (2C) obtained by impregnating a thermosetting resin into a polyester felt (2B) sandwiched between films (2A) in a sandwich shape is applied to the inner peripheral surface of a sewer pipe (1) to be treated. In the liner body (2D) configured to have the corresponding dimensions, an air jack (2E) is provided at the upstream mouth opening side portion (2D2) of the tube (2D1), and the air jack (2E) is an airbag storage bag ( 2E1) and an air bag (2E2)
Air bag storage bag (2E1) is a tube (2D1)
Is folded back and sewn into a bag shape to form a bag-like body (2E11) formed in the circumferential direction of the tube, and an air bag insertion port (2E11) opened at a part of the bag-like body (2E11). 2E12) and air bag (2E2)
Is a tube-shaped airbag body (2E21) having a semicircular cross section and both ends sealed, an air supply valve (2E22) and an exhaust valve (2E23) attached to one end surface of the airbag body, and an airbag body. The airbag (2E2) is inserted from the airbag insertion opening (2E12) into the airbag storage bag (2E1), and then is inserted into the airbag storage bag (2E1). The support wheel (2E2
4) A liner for lining a sewer, wherein one end side of an airbag body in which an air supply pipe mounting port and an exhaust pipe mounting port are mounted is penetrated. 3. An upstream end rope (2F) is connected to an upstream mouth side portion (2D2) of the liner body (2D), and a downstream mouth side portion (2D3) of the liner body (2D).
The liner for lining a sewer according to claim 1 or 2, wherein a downstream rope end (2G) is connected to the liner. 4. A sewer pipe (1) piped between an upstream manhole (1A) and a downstream manhole (1B), comprising a first step to a fifth step having the following conditions. Sewer lining method. First Step The lining liner (2) for a sewer according to any one of claims 1 to 3 is inserted from the upstream port (1C) and inserted to the downstream port (1D). Second Step The air jack (2E) of the liner (2) is fitted to the upstream port (1C), and the running water that has passed outside the pipe passes through the inside of the liner. Third step After confirming that running water is discharged from the liner (2),
The required head at the upstream manhole side is adjusted and maintained by the water level gauge (14) provided at the upstream manhole while squeezing the downstream port opening side portion (2D3) of the liner (2) and applying water pressure inside the liner. Fourth step By securing the required water head, the liner (2) is drained by the internal pressure while the inner surface is kept circular by applying water pressure from the inner surface of the liner (2) to the sewer pipe (1) with running water in the pipe. The tube (1) is pressed against the tube (1), and by holding the tube, the thermosetting resin self-heats to start curing, and is further held and cured. Fifth step After the hardening and curing are confirmed, after the water level in the sewer pipe (1) decreases, the downstream side and the upstream side of the liner (2) are cut to finish the mouth of the sewer pipe (1). . 5. A sewer pipe (1) piped between an upstream manhole (1A) and a downstream manhole (1B), comprising a first step to a fifth step having the following conditions. Sewer lining method. Step 1 A guide (7) for securing the diameter is installed at the mouth of the sewer pipe (1). The configuration of the diameter securing guide (7) is such that the block body (7A) configured to be attached to the surface on the upstream manhole (1A) side of the upstream pipe opening (1C) of the sewer pipe (1).
A circular hole (7B) corresponding to the inner peripheral surface of the upstream pipe opening formed in the block body (7A), and an outer portion attached to the outer periphery of the circular hole (7B) on the side of the surface exposed to the upstream human hole. It is composed of a guiding edge (7C) extending in the direction. Second step The liner for lining (2) according to any one of claims 1 to 3 is connected from the upstream port (1C) to the downstream port (1).
Insert up to D). Third step: The bottom device (12) is installed in the downstream human hole (1B), and the air jack (2E) set in the caliber securing guide (7) is enlarged, and the liner (2) is secured to the caliber securing guide. And the downstream pipe mouth side (2D3) of the liner body (2D) is connected to the liner connection pipe (12B3) of the bottom device (12), and the running water that has passed outside the pipe passes through the inside of the liner. Let it. The bottom device (12) is a gantry (12A) installed in a downstream manhole.
And a bottom bracket (12B).
A) includes upstream and downstream frames (12A1) formed in a rectangular shape as viewed from the upstream human hole side, and a connecting rod (12A1) connecting these frames.
2), and the bottom bracket (12B)
2A), a valve case (12B1) suspended from the central part of the gantry, a water outlet (12B2) opened on the surface of the valve case on the side of the upstream manhole, and a liner connected to the water outlet. A connecting pipe (12B3) and a valve plate (12B3) inserted to ascend and descend inside the valve case to regulate flowing water.
4). Step 4 Check that running water comes out from the bottom fitting and close the valve.
A water pressure is applied to the inside of the liner (2), and a required water head is secured by a valve of a bottom fitting while a water level meter (14) provided in the upstream manhole is checked while checking the water level meter of the upstream manhole. Water pressure is applied to the sewer pipe (1) from the inner surface of the liner (2) with running water, and the liner (2) is pressed against the sewer pipe (1) by the internal pressure. Heat is generated to start curing, and then the state is maintained and cured. Fifth step After the curing and curing are confirmed, the valve of the bottom fitting is released, and after the water level in the sewer pipe (1) drops, the downstream side and the upstream side are cut and the mouth of the sewer pipe (1) is cut. Finish. 6. A sewer pipe (1) piped between an upstream manhole (1A) and a downstream manhole (1B), comprising a first step to a fifth step having the following conditions. Sewer lining method. 1st step Install guide roller (3) for opening, and sewer pipe (1)
A guide (7) for securing the diameter is installed at the opening of the pipe, an upstream guide roller (6) is installed in the upstream manhole (1A), and a downstream guide roller (8) is installed in the downstream manhole (1B). Install. The guide roller (3) for the opening is an upstream human hole (1A).
A roller (3B) is attached so as to surround the opening of the upstream human hole (1A) using a gantry (3A) installed at the opening of the sewage pipe (1). Block body (7A) configured to be attached to the surface on the upstream manhole (1A) side of the upstream port (1C)
A circular hole (7B) corresponding to the inner peripheral surface of the upstream pipe opening formed in the block body (7A), and an outer portion attached to the outer periphery of the circular hole (7B) on the side of the surface exposed to the upstream human hole. It is composed of a guiding edge (7C) extending in the direction. The configuration of the upstream guide roller (6) and the downstream guide roller (8) is as follows. It is composed of a gantry (6A, 8A) and guide rollers (6B, 8B) attached to an upstream mouth side portion or a downstream mouth side portion of the gantry. Second step The liner (2) according to any one of claims 1 to 3 is drawn from the container (5), and the wire (10) of the hoisting machine (9) is guided by the guide roller (8B).
And fixed to the downstream rope end (2G) of the liner (2), and after inserting the liner (2) from the upstream mouth (1C) to the downstream mouth (1D), After fixing the side end rope (2F), the downstream side guide roller (8) is removed. Third Step: The bottom device (12) is installed in the downstream human hole (1B), and the downstream port side (2D3) of the liner body (2D) is connected to the liner connecting pipe (12B3) of the bottom device (12). Connect the air hose (1E) to the air jack (2E) set in the diameter securing guide (7) by connecting and fixing with a band.
The compressed air is sent in 3), and the liner (2) is fitted to the diameter securing guide, and the running water that has passed outside the tube passes through the inside of the liner pressed by the air jack. The bottom device (12) is composed of a gantry (12A) installed in a downstream human hole and a bottom fitting (12B), and the gantry (12A) has a rectangular upstream configuration as viewed from the upstream human port side. It is composed of a downstream frame (12A1) and a connecting rod (12A2) for connecting the frames, and a bottom bracket (12A1).
B) is a valve case (12B1) suspended from the gantry (12A) at the center of the gantry, a flowing water port (12B2) opened on the upstream manhole-side surface of the valve case, and a flowing water port. A connection pipe for liner (12B3) connected to
It comprises a valve plate (12B4) inserted so as to move up and down in the valve case to control the flowing water, and an operation rod (12B5) for operating the valve plate from the ground. Step 4 Check that running water comes out from the bottom fitting and close the valve.
A water pressure is applied to the inside of the liner (2), and a required water head is adjusted and maintained by a valve of the bottom fitting while checking a water level gauge of the upstream manhole with a water level gauge (14) provided in the upstream manhole.
The circular surface is kept circular by applying water pressure from the inner surface of the liner (2) toward the sewer pipe (1) with running water in the pipe, and the liner (2) is pressed against the sewer pipe (1) by the internal pressure. By holding the thermosetting resin, the thermosetting resin self-heats and starts to harden, after which the state is held and cured. Fifth step After the hardening and curing are confirmed, the valve of the bottom fitting is released, and the water level in the sewer pipe (1) is lowered. Finish the port).