JP2000211027A - Channel facility lining method - Google Patents

Abstract

(57) [Summary] [Purpose] Before hardening the lining material, the condition of the inner surface of the lining material can be checked, wrinkles in the lining material are surely suppressed, and problems inside the lining material during construction are checked in advance To provide a flow path facility lining method that can be found in Japan. After inserting a pipe lining material (lining material) 3 formed by impregnating a resin adsorbent with an uncured curable resin into a pipe (flow path facility) 1, the inside of the pipe lining material 3 is included. While the pipe lining material 3 is expanded by the fluid pressure supplied into the closed space S and pressed against the inner wall of the pipe 1, the curable resin impregnated in the pipe lining material 3 is cured. In the flow path facility lining method described above, the TV camera 20 is inserted into the closed space S, and the situation inside the closed space S is monitored from outside the closed space S by the TV camera 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of lining a flow path facility for lining and repairing pipes such as aged sewer pipes and inner walls of flow path facilities such as manholes or branch pipes with a lining material.

[0002]

2. Description of the Related Art A flow path facility lining method has been proposed in which an inner wall of a flow path facility such as an aged sewer pipe or a manhole or a branch pipe is lined and repaired with a lining material, and has already been put into practical use. ing.

[0003] In the above-mentioned flow path facility lining method, a lining material obtained by impregnating a resin adsorbent with an uncured curable resin is inserted into a flow path facility, and then supplied into an enclosed space including the inside of the lining material. A method of curing the curable resin impregnated in the lining material in a state where the lining material is expanded by the applied fluid pressure and pressed against the inner wall of the flow path facility, and according to this, the flow path facility Can be repaired without sagging from the ground.

[0004]

However, when lining is performed on a pipe or a branch pipe having a bend, a manhole having a reducer portion, or a pipe having a non-circular cross section such as a box culvert or a horseshoe, Wrinkles may occur on the inner surface of the lining material depending on the condition of the inner peripheral wall such as a road or a manhole. The wrinkles were found by checking the inside of the lining material after the lining was completed.

[0005] Various techniques have been proposed to suppress wrinkling of the lining material. For example, the lining material is slightly smaller (3% to 15%) than the inner peripheral dimension of the flow path facility.
%), Which is stretched by fluid pressure, or a flat belt is pulled inside a lining material to which fluid pressure is applied, or a separate hose or balloon is inflated to suppress wrinkles. I have.

However, even when the above method is applied, the occurrence of wrinkles can be confirmed only after the lining material is cured, and it has not been possible to reliably suppress the occurrence of wrinkles.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to check the condition of the inner surface of a lining material before the lining material is cured, thereby ensuring that wrinkles in the lining material are not generated. Another object of the present invention is to provide a flow path facility lining method capable of detecting in advance the trouble inside the lining material during construction.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, a lining material obtained by impregnating a resin adsorbent with an uncured curable resin is inserted into a flow path facility. The hardening resin impregnated in the lining material is cured in a state where the lining material is expanded by the fluid pressure supplied into the closed space including the inside of the lining material and pressed against the inner wall of the flow path facility. In the channel facility lining method, the TV is installed in the closed space.
A camera is inserted, and the situation inside the sealed space is monitored from outside the sealed space by the TV camera.

According to a second aspect of the present invention, in the first aspect of the present invention, the cable connected to the TV camera is
It is characterized in that it is covered with a cable covering material having an outer diameter equal to or larger than the outer diameter of the V camera.

A third aspect of the present invention is characterized in that, in the second aspect of the present invention, the cable covering material is made of natural rubber, metal, or plastic having strength against pressure.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the inner shape of the insertion port into the closed space of the TV camera is circular, and the insertion port is provided with the outer peripheral surface of the cable covering material. It is characterized in that a seal portion that comes into airtight contact is provided.

A fifth aspect of the present invention is characterized in that, in the fourth aspect of the present invention, the insertion port is constituted by a TV camera insertion pipe inserted into a part of the lining material.

According to a sixth aspect of the present invention, in the fourth or fifth aspect, a closing portion for closing a fluid pressure is provided at the insertion port.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, the closing portion is constituted by a ball valve.

Therefore, according to the present invention, the inside condition of the lining material being cured is imaged by a TV camera inserted into the inside of the lining material, and the inside condition is monitored on the ground outside the closed space. As a result, the condition of the inner surface of the lining material can be checked before the lining material hardens, wrinkles in the lining material can be reliably suppressed, and various problems in the lining material during construction are discovered in advance. can do.

[0016]

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

<Embodiment 1> FIG. 1 is a sectional view showing a lining method for a pipe (main pipe) 1 such as a sewer pipe buried in the ground. In FIG. Reference numeral 3 denotes a pipe lining material which is inserted in the pipe 1 upside down and pressed against the inner wall of the pipe 1.

The tube lining material 3 is formed by impregnating a thermosetting resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film. still,
As the tubular resin adsorbent, a non-woven fabric made of a plastic fiber such as polyester, vinylon and acrylic is used, and as the plastic film coated on the outer surface thereof, polyurethane, polyethylene, vinylon,
A composite film containing EVA or EVOH is used.
As the thermosetting resin impregnated in the tubular resin adsorbent, an unsaturated polyester resin, an epoxy resin, a vinyl ester resin or the like is used.

Thus, one end of the pipe lining material 3 is bent outward and attached to the outer periphery of the upper end of a closed nozzle 4 installed on the ground. A sealing cap 5 is attached to the upper part of the sealing nozzle 4 by a plurality of G clamps 6, and a sealing space S is formed inside the sealing cap 5 and the pipe lining material 3.

FIG. 1 is a view showing a hardening operation of the pipe lining material 3 which has been reversely inserted into the pipe line 1. When the pipe lining material 3 is reversely inserted into the pipe line 1, the pipe lining material 3 is hardened. The hot water hose 7 is drawn into the inside of the inside. The hot water hose 7 extends airtightly through the closed cap 5 to the outside of the closed space S. The pipe lining material 3 is inserted into the pipe 1 by the pressure of the compressed air supplied from the compressor 8 into the closed space S via the air hose 9.

A drainage pump 10 driven by compressed air is installed at the bottom of the pipe lining material 3. Two air hoses 11 connected to the drainage pump 10 are provided.
Numeral 12 extends airtightly through the sealing cap 5 and extends out of the sealed space S. One air hose 11 is connected to a compressor 13 installed on the ground, and the other air hose 12
Is open to the atmosphere. A drain hose 14 derived from the drain pump 10 also extends through the hermetic cap 5 to the outside of the closed space S in an airtight manner, and is opened above the hot water tank 15 installed on the ground.

Hot water is stored in the hot water tank 15, and a suction side of a hot water pump 17 is connected to a hot water pipe 16 extending from a side wall of the hot water tank 15.
The hot water hose 7 is connected to the discharge side of the hot water pump 17, and a boiler 18 is provided in the middle of the hot water hose 7.

On the other hand, a TV
A camera insertion pipe 19 is provided upright. An insertion port 19a having a circular inner surface is formed inside the TV camera insertion pipe 19, and a TV is inserted into the tube lining material 3 through the insertion port 19a. Camera 20 is inserted.

The TV camera 20 is housed in a cylindrical case 21 having a bottom as shown in FIG. 2, and a plurality of lights 22 for illumination are arranged around the case 21. Note that a lens 23 is attached to the front surface of the case 21.

The cables 24 and 25 connected to the TV camera 20 and the light 22, respectively, are gathered and airtightly penetrate the case 21 as a single cable 26 and extend out of the case 21. Is covered with a flexible cable covering material 27 having an outer diameter D (≧ d) equal to or larger than the outer diameter d of the TV camera 20 (more precisely, the case 21). The cable covering material 27 is made of natural rubber, metal, or plastic having strength against pressure. Also, in FIG.
Is a connector.

As shown in FIG. 1, the insertion port 1 of the TV camera insertion pipe 19 erected on the sealing cap 5
Above and below 9a, an O-ring 29 forming a seal portion and a ball valve 30 forming a closing portion are provided. With the ball valve 30 opened, the TV camera 20 and a cable coating material 27 connected to the TV camera 20 are inserted. These are pushed into the inside of the pipe lining material 3 and inserted through the pipe 19a. At this time, the O-ring 29 provided in the insertion port 19a comes into airtight contact with the outer peripheral surface of the cable covering material 27 to exhibit a high sealing property, and prevents leakage of compressed air from the sealed space S to prevent the sealed space. Prevent the internal pressure of S from dropping.

When the TV camera 20 reaches a predetermined position in the tube lining material 3 (a position suitable for monitoring the condition in the tube lining material 3 during curing) as shown in FIG. The closed space S is completely closed to prevent the compressed air from leaking from the sealed space S and prevent the internal pressure of the sealed space S from decreasing.

The hardening of the pipe lining material 3 is performed in the following manner.

That is, when the hot water pump 17 and the boiler 18 are driven and the hot water in the hot water tank 15 is heated to a predetermined temperature by the boiler 18 and sent to the hot water hose 7, the hot water is removed from the hot water hose 7. As shown in the drawing, the injection port is showered into the inside of the pipe lining material 3 and is used for heating the pipe lining material 3.
Collect at the bottom inside. Then, the hot water collected at the bottom in the pipe lining material 3 is sucked by the drain pump 10 driven by the compressed air supplied from the compressor 13 and sent out to the drain hose 14.
From the hot water tank 15. Thereafter, similarly, hot water is circulated, the pipe lining material 3 is heated by the hot water, the thermosetting resin impregnated in the pipe lining material 3 is hardened, and the hardened pipe lining material 3 lines the pipe 1. To be repaired.

The situation inside the hardened pipe lining material 3 is imaged by the TV camera 20 inserted into the inside of the hardened pipe lining material 3, and the status is monitored on the ground outside the closed space S by the monitor device 31. Monitored by

Therefore, according to the present embodiment, the condition of the inner surface of the pipe lining material 3 can be confirmed before the pipe lining material 3 hardens, and wrinkles in the pipe lining material 3 can be reliably suppressed, and Various troubles in the pipe lining material 3 during construction can be found in advance. In addition, as troubles in the pipe lining material 3 during construction, twisting or entanglement or looseness of the hot water hose 7, the drain hose 14, and the like, poor hot water showering, and the like can be given.

By the way, as shown in FIG. 3, a TV camera insertion pipe 32 is inserted obliquely from the manhole 2 into the end of the tube lining material 3 which is being cured, or as shown in FIG. A tubular TV camera insertion pipe 33 is inserted substantially vertically into a part of the pipe lining material 3, and the TV camera 20 and a cable coating connected thereto are inserted into insertion ports 32 a, 33 a formed inside the TV camera insertion pipes 32, 33. TV camera 20 as shown in FIG.
Is placed at a predetermined position in the pipe lining material 3, and each insertion port 3
An O-ring 29 and a ball valve 30 may be used to hermetically seal the space between the cable covering members 27 and 2a, 33a.

Thus, according to the above-described method, the condition inside the hardened pipe lining material 3 can be monitored on the ground by the TV camera 20, and the same effect as described above can be obtained.

It is to be noted that a plurality of TV cameras may be inserted inside the pipe lining material, and the status inside the pipe lining material may be monitored by the plurality of TV cameras.
The camera and the light may be separated and inserted separately into the tube lining material.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG.

FIG. 5 is a sectional view showing a lining method for the branch pipe 34. As shown, a branch pipe lining material 35 is inserted into the branch pipe 34 from the pipe line 1 side to the ground, and The pipe lining material 35 expands in the branch pipe 34 and is pressed against the inner wall of the branch pipe 34.

The branch pipe lining material 35 is constructed in the same manner as the pipe lining material 3 in the first embodiment. One end of the branch pipe lining material 35 is formed with a flange 35a that conforms to the inner shape of the pipeline 1. Is in close contact with the peripheral edge of the branch pipe opening (the part where the branch pipe 34 opens into the pipe 1) of the pipe 1 by a collar pressing collar 37 provided on the working robot 36 introduced into the pipe 34.

A pressure bag mounting nozzle 38 is inserted and fixed to the collar pressing collar 37. One end of a pressure bag 39 is mounted on the outer periphery of the pressure bag mounting nozzle 38. The other end of the pressure bag 39 is closed, and an air hose 40 and a tow rope 41 are attached to this portion. The work robot 36 is driven by hydraulic pressure, and a monitor TV camera 42 and a fixed arm 43 are provided on the upper part of the work robot 36.
2 and a hydraulic hose 45 and a towing rope 46 connected to the work robot 36 are extended to the ground and connected to a monitor device, a hydraulic pump, and a winch (not shown). The working robot 36 and the pressure bag 39 are connected to each other by a rope 47.

The branch pipe lining material 35 before inversion is housed in the pressure bag 39. When compressed air is supplied from the compressor (not shown) into the pressure bag 39 via the air hose 40, the branch pipe lining material 35 is branched. The pipe lining material 35 is reversely inserted in the branch pipe 34 from the pipe line 1 side to the ground under the pressure of the compressed air.

As shown in FIG. 5, when the branch pipe lining material 35 is inserted upside down into the branch pipe 34 over its entire length, the upper end opening of the branch pipe lining material 35 is closed by the sealing nozzle 48. Thus, a closed space S is formed inside the closed nozzle 48 and the branch pipe lining material 35. The closed nozzle 48 has an air hose 9 derived from the compressor 8 and a hot water hose 7 derived from a hot water tank (not shown).
Is connected, and a pressure gauge 49 for detecting the internal pressure of the closed space S is attached. A hot water pump 17 and a valve 50 are provided in the middle of the hot water hose 7.

A camera insertion pipe 51 is provided upright on the upper surface of the sealed nozzle 48. Inside the camera insertion pipe 51, an insertion port 5 having a circular inner cross section is provided.
1a is formed, and the TV is inserted through the insertion port 51a.
The camera 20 is inserted inside the branch pipe lining material 35.

That is, as in the first embodiment, the TV camera 20 and the cable covering material 27 connected to the TV camera 20 are passed through the insertion port 51a with the ball valve 30 opened, as shown by broken lines in FIG. It is pushed into the inside of the branch pipe lining material 35 and inserted. At this time, the O-ring 29 provided in the insertion port 51a is in airtight contact with the outer peripheral surface of the cable covering material 27 to exhibit a high sealing property, and prevents leakage of compressed air from the closed space S to prevent the sealed space S from being closed. To prevent the internal pressure from dropping.

When the TV camera 20 reaches a predetermined position in the branch pipe lining material 35 (a position suitable for monitoring the situation in the branch pipe lining material 35 during curing) as shown in FIG. Close 30 and insert 51
a is completely closed to prevent leakage of the compressed air in the closed space S, thereby preventing a decrease in the internal pressure of the closed space S.

Thereafter, when the hot water pump 17 is driven and hot water is supplied from the hot water hose 7 into the closed space S, the branch pipe lining material 35 pressed against the inner wall of the branch pipe 34 is heated by the hot water. The thermosetting resin impregnated in the branch pipe is cured, and the cured branch pipe lining material 35 is used to cure the branch pipe 3.
4 is lined and repaired.

The inside of the hardened branch pipe lining material 35 is imaged by the TV camera 20 inserted into the inside of the branched pipe lining material 35. It is monitored by the illustrated monitor device.

Therefore, also in the present embodiment, the condition of the inner surface of the branch pipe lining material 35 can be checked before the hardening of the branch pipe lining material 35 as in the first embodiment, and the generation of wrinkles in the branch pipe lining material 35 is possible. Can be reliably suppressed, and various troubles in the branch pipe lining material 35 during construction can be found in advance.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIG.

FIG. 6 is a sectional view showing a lining method for the manhole 2, in which a manhole lining material 52 is inserted into the manhole 2 as shown, and a closed nozzle 4 is attached to the upper end thereof.

The manhole lining material 52 is configured in the same manner as the pipe lining material 3 in the first embodiment. The manhole lining material 52 is formed by the pressure of compressed air supplied from the compressor 8 through the air hose 9 into the closed space S. It expands and is pressed against the inner wall of the manhole 2 as shown.

Then, the manhole lining material 52 is heated by hot water being showered from the hot water hose 7 drawn into the inside thereof, and the thermosetting resin impregnated therein is hardened. The monitoring operation of the inside state of the manhole lining material 52 during the operation and the hardening by the TV camera 20 is performed in the same manner as in the first embodiment. Therefore, in FIG. 6, the same elements as those shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted below.

Thus, also in the present embodiment, as in the first embodiment, the inside state of the manhole lining material 52 is imaged by the TV camera 20, and the inside state is monitored by the monitor device 31 on the ground outside the closed space S. Monitored by

Therefore, according to the present embodiment, the condition of the inner surface of the manhole lining material 52 can be confirmed before the manhole lining material 52 is hardened, and wrinkles in the manhole lining material 52 can be reliably suppressed.
Various troubles in the manhole lining material 52 during construction can be found in advance.

In the above embodiment, hot water showering is used as a method of heating various lining materials, but a method of circulating a heat medium such as hot water, steam, or hot air may be employed.

[0054]

As is apparent from the above description, according to the present invention, the situation inside the lining material being cured is imaged by a TV camera inserted inside the lining material, and the inside situation is sealed. Because we monitor on the ground outside the space, we can check the condition of the inner surface before the lining material hardens, and it is possible to reliably suppress the occurrence of wrinkles in the lining material,
An effect is obtained that various troubles in the lining material during construction can be found in advance.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a lining method for a pipeline.

FIG. 2 is a sectional view of a TV camera part.

FIG. 3 is a partial sectional view showing another embodiment of the present invention.

FIG. 4 is a partial sectional view showing another embodiment of the present invention.

FIG. 5 is a sectional view showing a lining method for a branch pipe.

FIG. 6 is a sectional view showing a lining method for a manhole.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Pipe (flow path facility) 2 Manhole (flow path facility) 3 Pipe lining material (lining material) 19 TV camera insertion pipe 19a Insertion port 20 TV camera 26 Cable 27 Cable coating material 29 O-ring (seal part) 30 Ball valve (Closed part) 31 Monitor device 32, 33 TV camera insertion pipe 32a, 33a Insertion port 34 Branch pipe (flow path facility) 35 Branch pipe lining material (lining material) 51 TV camera insertion pipe 51a insertion port 52 Manhole lining material (lining) Material) S Closed 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. In-house (72) Inventor Yasuhiro Yokoshima 175-3 Shinoyama, Ishishita-cho, Yuki-gun, Ibaraki Pref.Yokoshimanai Co., Ltd. (72) Inventor Shigeru Endo 2-12-4 Hanahata, Tsukuba, Ibaraki Pref. Inventor Hiroyuki Aoki 1-194, Hayashi, Tokorozawa-shi, Saitama F-term in all four companies (reference) 3H024 EA01 EB08 EC07 ED02 ED05 ED06 EE05 4F211 AD05 AD12 AD16 AD20 AG03 AG08 AH43 SA13 SA14 SC03 SD04 SD11 SN03 SP12 SP15 SP47

Claims (7)

[Claims] After inserting a lining material obtained by impregnating a resin adsorbent with an uncured curable resin into a flow path facility,
The curable resin impregnated in the lining material is cured while the lining material is expanded by the fluid pressure supplied into the closed space including the inside of the lining material and pressed against the inner wall of the flow path facility. In the above-mentioned flow path facility lining method, a TV camera is inserted into the closed space, and the situation in the closed space is monitored from outside the closed space by the TV camera. . 2. The channel facility lining according to claim 1, wherein the cable connected to the TV camera is covered with a cable coating material having an outer diameter equal to or larger than the outer diameter of the TV camera. Construction method. 3. The lining method according to claim 2, wherein the cable covering material is made of natural rubber, metal or plastic having a resistance to pressing. 4. The TV camera according to claim 1, wherein an inner surface of the insertion port of the TV camera into the closed space is circular, and the insertion port is provided with a seal portion that comes into air-tight contact with the outer peripheral surface of the cable covering material. Item 4. The flow path facility lining method according to item 2 or 3. 5. The lining method according to claim 4, wherein said insertion opening is formed by a TV camera insertion pipe inserted into a part of said lining material. 6. The lining method according to claim 4, wherein a closing portion for closing a fluid pressure is provided at the insertion port. 7. The lining method according to claim 6, wherein the closing portion is constituted by a ball valve.