JP3626720B2 - Repair method of the mounting pipe including the connection part with the sewer main - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for repairing a mounting pipe including a connection site with a sewer main.
[0002]
[Prior art]
In many cases, the attachment pipe drawn from each house through the sewage basin in order to allow the sewage to flow down to the sewer main has various damages on the side of the junction with the sewer main. In addition, such damage tends to cause inflow of water, earth and sand, etc. into the sewer main, and if the inflow is actually invited, the pipe function will be greatly impaired.
[0003]
In addition, the joint part between the sewer main pipe and the attachment pipe is damaged, resulting in poor joints, resulting in gaps and breakage. Depending on the extent, serious road collapse accidents may occur. Will cause.
[0004]
For this reason, when various damages have occurred on the attachment pipe side including the joint portion with the sewer main, the peripheral edge of the opening located at the joint portion between the sewer main and the attachment pipe is conventionally set to the sewer main. A lining construction method is adopted in which the lining material that is integrated with the dredging material is sent from the sewer main side into the mounting pipe, and the joint and the mounting pipe are covered and repaired. ing.
[0005]
[Problems to be solved by the invention]
However, in the case of the above-described conventional lining method, when cavitation beyond prediction is progressing in the soil of the joint portion between the sewer main pipe and the mounting pipe, depending on the dredging, it is surely and sufficiently. There was an inconvenience that it could not be blocked and could not effectively block the inflow of water or earth and sand into the sewer main.
[0006]
In addition, when covering the joint from the sewer main side with the dredging material, there is also a problem that an undesirable step is generated in the sewer main to inhibit the flow of sewage or the pipe diameter is reduced. .
[0007]
In view of the above-mentioned problems seen in the conventional method, the present invention can reliably block even if the hollowing beyond prediction progresses in the soil of the joint portion between the sewer main pipe and the mounting pipe, It is an object of the present invention to provide a method for repairing a mounting pipe including a connecting portion with a sewer main that does not cause an undesirable step in the sewer main even after the repair.
[0008]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, and the first invention is to provide a lining material whose tip is closed in a bag shape with respect to a mounting pipe connected to a sewer main. A lining process that reversely inserts toward the sewer main by fluid pressure from the sewage reservoir side of the house, and the tip of the lining material protrudes from the opening of the mounting pipe that is inserted reversely and located on the sewer main side And then cutting off the protruding portion to form a tip opening, and closing to temporarily close the tip opening by supplying gas to the bag inserted from the tip opening and inflating it. A process, a mold installation process in which a transparent mold is placed around the inner peripheral surface of the sewer main located near the opening of the mounting pipe, and a repair resin material is sewered through a through hole provided in the mold Resin material injection process for injecting into the inner peripheral surface side of the main pipe, A polishing step for polishing and finishing a required portion of the inner peripheral surface of the sewer main pipe including the opening of the mounting pipe after the repairing resin material is injected and the mold and the bag body after gas release are removed. There is a structural feature in including at least.
[0009]
Further, the second invention is a cutting step for cutting the protruding pipe end into the sewer main pipe in the mounting pipe, and a bag body inserted from the opening of the mounting pipe formed after cutting the protruding pipe end. A closing process for temporarily closing the opening by supplying gas to bulge, and a mold installation for circularly arranging a transparent mold on the inner peripheral surface of the sewer main pipe located in the vicinity of the opening of the mounting pipe A process, a resin material injecting step of injecting a repair resin material into the inner peripheral surface of the sewer main through a through hole provided in the mold, and the mold and the gas release after finishing the injection of the repair resin material There is a structural feature in that it includes at least a polishing step for polishing and finishing a required portion of the inner peripheral surface of the sewer main pipe including the opening of the attachment pipe after removing the bag.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
First, if one example of the first invention is described based on the process explanatory diagrams of FIGS. 1 to 3, in addition to a thorough on-site investigation, necessary preparatory work and preliminary work based on this will be performed, and then attachment A lining process for the pipe 21, a cutting process for a part of the lining material 31, a mold installation process for the inner peripheral surface 13 of the sewer main pipe 11, a closing process for the opening 22 of the mounting pipe 21 after the lining, and a mold This is performed through at least a resin material injection process from the frame 39 side and a polishing process after the resin material injection.
[0011]
Among these, as shown in FIG. 1, the lining process is carried out by using the lining material 31 whose tip 32 is closed in a bag shape with respect to the attachment pipe 21 connected to the sewer main pipe 11. This is done by reversing and inserting in the direction of the sewer main 11 under fluid pressure obtained by sending compressed air from the sewage reservoir side of (household).
[0012]
In this case, the lining material 31 is formed by impregnating a resin adsorbent formed in a cylindrical shape like a seamless hose with an appropriate thermosetting resin such as an epoxy resin, and is guided by the reverse induction rope 37. Under control, the tip 32 is inverted and inserted until it projects from the opening 22 of the attachment pipe 21 located on the sewer main pipe 11 side.
[0013]
In addition, the lining material 31 after being reversely inserted in this way is cured with thermosetting resin by the hot water supplied from the hot water circulation hose 38 disposed through the internal space 33, and The lining layer 34 adhered to the inner peripheral surface 23 along the length direction is formed.
[0014]
In the cutting process for a part of the lining material 31, the tip 32 of the lining material 31 that has been inverted and inserted and protruded from the opening 22 of the mounting pipe 21 located on the connection port 12 side of the sewer main pipe 11 is cut off. This is done to form the opening 35.
[0015]
The cutting of the tip 32 of the lining material 31 performed in this case is performed under the illuminating lamp 2 provided in the cutting robot 1 arranged in the sewer main pipe 11 in advance as shown in FIG. It is carried out by bringing the cutting blade 3 attached thereto into contact with the distal end portion 32 while controlling the rotation of the cutting blade 3 attached thereto by remotely operating the site situation obtained from an on-board television camera (not shown) while being monitored externally. . After the distal end portion 32 of the lining material 31 is cut off by the cutting blade 3, the distal end opening portion 35 of the lining material 31 is formed at substantially the same position as the opening portion 22 of the attachment tube 21.
[0016]
The closing step performed for the tip opening 35 formed in this way is a bag made of a member having high elasticity such as rubber in the tip opening 35 integrated with the opening 22 of the attachment tube 21. By inserting the body 36 and press-fitting a gas such as air into the bag body 36 and causing the bag 36 to swell along the path length direction, the opening 22 of the mounting tube 21 is temporarily closed together with the tip opening 35. Will be.
[0017]
In this case, the insertion of the bag 36 into the tip opening 35 and the air press-fitting operation are performed by the illumination lamp 6 provided in the resin injection robot 5 disposed in the sewer main pipe 11 as shown in FIG. The operation is automatically performed by remotely operating the resin injection robot 5 while an operator monitors the situation on the site obtained by an on-board television camera (not shown).
[0018]
The mold installation process for the inner peripheral surface 13 of the sewer main 11 is shown in FIG. 2 on the inner peripheral surface 13 located in the vicinity of the connection port 12 of the sewer main 11 connected to the opening 22 of the attachment pipe 21. In this way, the mold 39 is arranged around the circuit.
[0019]
The installation of the mold 39 in this case is automatically performed via the resin injection robot 5. The mold 39 used at this time is a band material 40 provided in the mold 39 and the resin injection robot. 5 is formed of a transparent resin material having a cylindrical shape whose diameter can be freely expanded by automatic operation, and through holes 41 for injecting the resin material and bulging bags at appropriate positions thereof An inlet 42 for guiding a part of the body 36 into the mold 39 is formed. In addition, it is desirable that the closing process and the above-described mold installation process performed on the front end opening 35 are first performed after the mold 39 is installed and then the front end opening 35 is closed. Depending on the case, the reverse process may be performed.
[0020]
As shown in FIG. 2, the resin material injection process from the mold 39 side is performed by injecting resin from the through hole 41 provided in the mold 39 that is arranged around the inner peripheral surface 13 of the sewer main pipe 11 and fixed in position. This is performed by injecting a repairing resin material 45 made of resin mortar as an appropriate component from a resin tank 7 provided in the robot 5 through the nozzle 8 toward the inner peripheral surface 13 of the sewer main pipe 11.
[0021]
In this case, the operation of injecting the repair resin material 45 is obtained as an image from the resin injection robot 5 through the transparent mold 39, and the operator can always grasp the injection state accurately by monitoring the injection state.
[0022]
After the necessary injection of the repairing resin material 45 through the mold 39 to the inner peripheral surface 13 located in the vicinity of the connection port 12 of the sewer main pipe 11 connected to the opening 22 of the attachment pipe 21, Shifts to the polishing process after a necessary curing time.
[0023]
In the polishing process, first, the mold 39 and the bag 39 after gas release are removed via the resin injection robot 5, and then the inner peripheral surface 13 of the sewer main pipe 11 including the opening 22 of the attachment pipe 21. This is done by polishing the required part.
[0024]
As shown in FIG. 3, the polishing finish performed at this time is remotely operated while an operator monitors the on-site situation obtained from an on-board TV camera (not shown) under the illumination lamp 2 provided in the cutting robot 1. By doing this, while removing the cutting blade 3 attached thereto, the excess repairing resin material 45 attached to the inner peripheral surface 13 of the sewer main pipe 11 and cured is removed, or unnecessary uneven parts are formed. Is performed by flattening.
[0025]
For this reason, according to the first invention, as shown in FIG. 1, even if there is a defect portion 24 such as a crack in the attachment pipe 21 extending from the sewage basin to the sewer main pipe 11, all of the inner peripheral surface 23 is removed. By covering with the lining layer 34, it is possible to reliably perform the repair without taking the trouble of performing the repair after the excavation work of digging up the soil.
[0026]
Further, the opening 22 of the attachment pipe 21 is not securely connected to the connection port 12 of the sewer main 11, and there is a gap 14 as shown in FIG. 1, or in the vicinity of the connection port 12 of the sewer main 11. Even if there is a defect 15 such as a crack, the repair resin material 45 is injected through the mold 39 arranged in a circle to close the gap 14 or fill the defect 15 with certainty. Can do.
[0027]
Furthermore, the hollowing beyond the prediction progresses in the soil 17 at the joint portion of the sewer main pipe 11 and the mounting pipe 21 to form a large cavity 18, which is a shielding employed by the conventional lining method. Even in a situation that cannot be dealt with by the buttocks as a material, it can be reliably blocked, so that the inflow of water or earth and sand into the sewer main pipe 11 can be effectively prevented after the repair.
[0028]
Next, if one example of the second invention is described based on the process explanatory diagrams of FIGS. 4 to 7, in addition to a thorough field survey, necessary preparatory work and preliminary work based on this will be performed. Mounting pipe protrusion cutting process, mold installation process on the inner peripheral surface 13 of the sewer main pipe 11, closing process on the opening 22 of the mounting pipe 21 after cutting, and resin material injection process from the mold 39 side It is performed by at least going through a polishing step after the injection of the resin material.
[0029]
Among these, the mounting tube protruding portion cutting step is performed on the protruding tube end 25 of the mounting tube 21 protruding into the sewer main pipe 1125 as shown in FIG. This is done by cutting off the end 25.
[0030]
In this case, as shown in FIG. 4, the field situation obtained from an on-board TV camera (not shown) under the illumination lamp 2 provided in the cutting robot 1 previously arranged in the sewer main 11 is worked outside. When a person performs a remote operation while monitoring, the cutting blade 3 attached thereto is brought into contact with the protruding tube end 25 while controlling the rotation. For this reason, the opening part 22 in which the surface height is adjusted including the damaged part 16 on the sewer main pipe 11 side is formed at the pipe end of the attachment pipe 21 after the protruding pipe end part 25 is cut off. It will be.
[0031]
In the process of closing the opening 22 of the mounting tube 21 after excision, a bag body 36 made of a member having high elasticity such as rubber is inserted into the opening 22 of the mounting tube 21 after the projecting tube end 25 is excised. This is performed by press-fitting a gas such as air into the bag body 36 and inflating it along the path length direction to temporarily close the opening 22 of the attachment tube 21.
[0032]
In this case, the insertion of the bag body 36 into the opening 22 and the air press-fitting operation are performed by the illumination lamp 6 provided in the resin injection robot 5 arranged in the sewer main pipe 11 as shown in FIG. Thus, the operation is automatically performed by remotely operating the resin injection robot 5 while an operator monitors the on-site situation obtained by an on-board television camera (not shown).
[0033]
In the mold arrangement process for the inner peripheral surface 13 of the sewer main 11, the mold 39 is arranged around the inner peripheral surface 13 near the connection port 12 of the sewer main 11 connected to the opening 22 of the attachment pipe 21. As shown in FIG. 5, a plurality of molds 39 are continuously arranged around the inner peripheral surface 13 located up to an appropriate length in the flow channel direction as necessary. Is called.
[0034]
The installation of one or more molds 39 performed in this case is automatically performed via the resin injection robot 5. The mold 39 used at this time is an operation provided in the mold 39. The band material 40 is formed of a transparent resin material having a cylindrical shape whose diameter can be freely expanded by automatically operating the resin injection robot 5, and a through hole for injecting the resin material at an appropriate position thereof 41 and an introduction port 42 for guiding a part of the bulging bag body 36 into the mold 39 is formed. As for the closing step performed on the opening 22 and the above-described mold installation step, it is desirable to first perform the step of closing the opening 22 after installing the mold 39, but the reverse is necessary if necessary. It may be performed through the process.
[0035]
The resin material injecting step from the mold 39 side is performed through the nozzle 41 from the resin tank 7 provided in the resin injection robot 5 through the through hole 41 provided in the mold 39 around the inner peripheral surface 13 of the sewer main pipe 11 and fixed in position. 8 is performed by injecting a repairing resin material 45 made of resin mortar as a component through 8 toward the inner peripheral surface 13 side of the sewer main pipe 11.
[0036]
In this case, the operation of injecting the repairing resin material 45 can always be accurately grasped by the operator monitoring the injection status obtained from the resin injection robot 5 through the transparent mold 39.
[0037]
After the necessary injection of the repairing resin material 45 through the mold 39 to the inner peripheral surface 13 located in the vicinity of the connection port 12 of the sewer main pipe 11 connected to the opening 22 of the attachment pipe 21 is completed. After the necessary curing time, the process proceeds to the polishing process.
[0038]
In the polishing process, first, as shown in FIG. 6, the mold 39 and the bag 39 after the gas release are removed through the resin injection robot 5, and thereafter the opening 22 of the attachment tube 21 is included. This is performed by polishing a required portion of the inner peripheral surface 13 of the sewer main pipe 11.
[0039]
As shown in FIG. 7, the polishing finish performed at this time is performed while an operator monitors an on-site situation obtained as an image from an on-board TV camera (not shown) under an illumination lamp 2 provided in the cutting robot 1. By remotely controlling the cutting blade 3 attached thereto, the excessive repairing resin material 45 attached to the inner peripheral surface 13 of the sewer main pipe 11 and being hardened can be removed or used unnecessary. This is done by flattening the uneven part.
[0040]
In the second invention, the lining process of the first invention is performed in advance prior to the cutting process, and the protruding pipe end 25 of the mounting pipe 21 protruding into the sewer main pipe 11 in the cutting process is also returned. You may cut | disconnect the front-end | tip part 32 of the lining material 31 located in the inside simultaneously.
[0041]
For this reason, according to the second invention, the projecting pipe end 25 is formed by projecting the distal end side of the attachment pipe 21 from the connection port 12 of the sewer main pipe 1125 toward the inside thereof. Even if the portion 14 and the defect portion 15 are formed, the repair can be quickly and easily performed without taking the trouble of performing repairs after performing the excavation work of digging up the soil as in the prior art.
[0042]
Moreover, even if a large cavity 18 is formed due to progress of cavitation beyond prediction in the soil 17 of the joining portion of the sewer main pipe 11 and the attachment pipe 21, it can be reliably blocked. The inflow of water, earth and sand, etc. into the sewer main 11 after repair can be effectively blocked to prevent a road collapse accident or the like.
[0043]
【The invention's effect】
As described above, according to the first aspect of the present invention, even if there is a defect portion such as a crack in the attachment pipe from the sewage basin to the sewer main, the inner periphery thereof is not subjected to the excavation work. By covering the entire surface with a lining layer, it can be reliably repaired.
[0044]
In addition, even if a gap is formed between the connection port of the sewer main and the opening of the mounting pipe, or there is a cracked part or the like in the vicinity of the connection port of the sewer main, Repair can be reliably repaired by injecting a repair resin material through the frame to close the gap and fill the defect.
[0045]
In addition, even if a hollow part is formed in the soil at the junction between the sewer main pipe and the mounting pipe and a large hollow part is formed, it can be reliably closed using a mold, so after the repair, into the sewer main pipe Inflow of water and earth and sand can be effectively prevented.
[0046]
On the other hand, according to the second invention, the tip end side of the mounting pipe protrudes into the sewer main pipe to form a protruding pipe end portion, so that even if there are voids or chipped portions around it, the excavation work is performed. Can be repaired quickly, easily and reliably.
[0047]
In addition, even if a large cavity is formed in the soil at the junction of the sewer main and the mounting pipe, it can be reliably closed, so that water and earth and sand flow into the sewer main after repair. Can be effectively prevented and road accidents can be prevented.
[0048]
All of the above-described inventions have undergone a polishing process as a final finish, so that an undesirable step is generated in the sewage main pipe after repairing to impede the flow of sewage or reduce the pipe diameter. It is possible to eliminate the problems found in the conventional method.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a state in which a part of a lining material is cut off after undergoing a lining step in an example of the first invention.
FIG. 2 is an explanatory view showing a state in which a resin material is injected from a mold frame disposed on an inner peripheral surface of a sewer main pipe after closing a front end opening portion of a mounting pipe after lining in an example of the first invention.
FIG. 3 is an explanatory view showing a state in which the resin material is injected and the grinding is finished in the example of the first invention.
FIG. 4 is an explanatory view showing a protruding state of a mounting pipe into a sewer main in one example of the second invention.
FIG. 5 shows an example of the second invention, in which a protruding portion of the mounting pipe is cut off and a tip opening of the mounting pipe is closed, and then a resin material is injected from a mold disposed on the inner peripheral surface of the sewer main pipe. Explanatory drawing which shows a state.
FIG. 6 is an explanatory view showing a state where the mold is removed after the injection of the resin material in the example of the second invention.
FIG. 7 is an explanatory view showing a state in which the tip opening portion of the attachment pipe is opened and grinding of the injected resin material is finished in the example of the second invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cutting robot 2 Illumination lamp 3 Cutting blade 5 Resin injection robot 6 Illumination lamp 7 Resin tank 8 Nozzle 11 Sewer main pipe 12 Connection port 13 Inner peripheral surface 14 Air gap part 15 Defect part 16 Damaged part 17 Soil 18 Cavity part 21 Installation pipe 22 Opening 23 Internal Peripheral Surface 24 Defect 25 Ending Pipe End 31 Lining Material 32 Tip 33 Internal Space 34 Lining Layer 35 Tip Opening 36 Bag Body 37 Reverse Induction Rope 38 Hot Water Circulation Hose 39 Form 40 Band Material 41 Hole 42 inlet

Claims (2)

A lining process in which a lining material whose tip is closed in a bag shape with respect to a mounting pipe connected to a sewer main is reversely inserted in the direction of the sewer main by the fluid pressure from the sewage basin side of the house; ,
After projecting the tip of the lining material from the opening of the attachment pipe that is inverted and inserted and located on the sewer main side, a cutting step of cutting the projecting portion to form the tip opening,
A closing step of temporarily closing the tip opening by supplying gas to the bag inserted from the tip opening and causing the bag to bulge;
A formwork installation process in which a transparent formwork is placed around the inner peripheral surface of the sewer main pipe located near the opening of the mounting pipe;
A resin material injection step of injecting a resin material for repair into the inner peripheral surface side of the sewer main through the through hole provided in the mold,
A polishing step for polishing and finishing a required portion of the inner peripheral surface of the sewer main pipe including the opening of the mounting pipe after the repairing resin material is injected and the mold and the bag body after gas release are removed. ,
A method of repairing a mounting pipe including a connection site with a sewer main, characterized by comprising at least Excision step of excising the protruding pipe end into the sewer main in the mounting pipe;
A closing step of temporarily closing the opening by supplying gas to the bag body inserted from the opening of the attachment tube formed after cutting the projecting tube end;
A mold installation step for circularly arranging a transparent mold on the inner peripheral surface of the sewer main pipe located in the vicinity of the opening of the mounting pipe;
A resin material injection step of injecting a resin material for repair into the inner peripheral surface side of the sewer main through the through hole provided in the mold,
A polishing step for polishing and finishing a required portion of the inner peripheral surface of the sewer main pipe including the opening of the mounting pipe after the repairing resin material is injected and the mold and the bag body after gas release are removed. ,
A method of repairing a mounting pipe including a connection site with a sewer main.

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