KR19990064401A - GL-LC Unexcavated Sewage Repair - Google Patents

Abstract

The present invention relates to a GL-LC unexcavated sewer repair method, comprising: preparing a packer and an unmanned camera installed in the packer into a sewer pipe and moving the packer to a damaged part of the sewer pipe; An intimate step of injecting compressed air generated from an air compressor into the packer waiting for the preparation step, inflating the packer, and bringing the packer into close contact with the inner wall of the sewer pipe; And a watertight test step of determining the degree of damage to the sewer pipe by checking the degree of air leakage through the outlet of the packer side in the close contact step. GL-LC non-excavated sewage pipe repair method of the present invention made as described above is equipped with equipment capable of performing various repair methods in one vehicle, camera shooting survey, watertight test, grouting method or lining method in one place At the same time, the report according to each process can be immediately inputted and output on-site, so even in the case of construction requiring multiple methods, it does not interfere with the traffic around the workplace, and it is highly efficient and can carry out work with a small number of people. This takes less. In addition, the unmanned camera is installed in the packer to move the packer, and at the same time, the shooting of the unmanned camera is speeded up.

Description

LL-LC Unexcavated Sewage Repair

The present invention relates to a GL-LC non-excavated sewer repair method that can repair a sewer pipe buried in the ground without digging the ground. GL-LC is the first English letter that means grouting, lining, leakage test, camera investigation, and the grouting process through the repair method according to the present invention. This means that the lining process, the liquidage test process (watertight test process) and the camera irradiation process can be selectively performed simultaneously.

If sewage pipes are old, cracks may be generated or various parts may be damaged, and in the case of sewage pipes, the outflow of waste water may occur and cause serious environmental damage. The method for repairing broken sewer pipes is appropriately selected depending on the nature of the damaged area and the ambient conditions. As a construction method for repairing sewer pipes buried underground, excavation methods for excavating and repairing land or non-excavation construction methods for repairing through a manhole without excavating the ground are performed.

In order to repair the sewage pipe by the non-excavation method, an unmanned camera and a packer, which is capable of checking the state inside the sewer pipe, are essentially used. However, the conventional method, which has been carried out so far, first packs the packer into the sewer pipe, and then secondly sends a drone camera operated by a separate power source supplied from the outside, and checks the contents of the drone camera through an external monitor. As a result, the work speed is slow and cumbersome, and the inside of the sewage pipe becomes complicated due to the need for two operations of finding the damage site of the sewage pipe and selecting the work position of the packer.

In addition, the breakage of sewage pipes has different characteristics, so they have to be treated by different methods in each case. However, since the equipment used to perform each method is different, and only one method can be constructed as one piece of equipment, when two or more methods are performed, a moving vehicle equipped with each device around the workplace There is a problem that the traffic is inconvenient and the workforce increases, and various unnecessary factors increase, resulting in a decrease in work efficiency and an increase in cost.

The present invention has been created to solve the above problems, and is connected to a single mobile vehicle mounted on the equipment, it is configured to perform a variety of repair work at the same time, in particular a 360 degree side-by-side rotation and up and down 180 degrees unmanned camera Is installed in the packer to move the packer and at the same time the shooting of the unmanned camera is faster, the leak detection by the packer is confirmed, the repair is performed on the spot immediately, and the construction and survey report is withdrawn from the site. The purpose is to provide a non-excavated sewage repair process that can be done.

1A and 1B are schematic diagrams schematically illustrating the present invention.

Figure 2 is a schematic diagram for explaining the watertight test process in the unexcavated sewer repair method according to an embodiment of the present invention.

Figure 3 is a schematic diagram for explaining the grouting process in the unexcavated sewer repair method according to an embodiment of the present invention.

Figure 4a, 4b, 4c, 4d is a schematic diagram illustrating a lining process in the non-excavated sewer repair method according to an embodiment of the present invention.

5 is a block diagram showing the watertight test step.

6 is a block diagram showing the grouting process.

7 is a block diagram showing the lining process.

Explanation of symbols for the main parts of the drawings

10: equipped vehicle 12: winch

14: guide roller 16: manhole

18: chemical supply pipe 20: compressed air supply pipe

22: unmanned camera 24: outlet

25: Damage part 26: Packer

28: wheel 30: sewer pipe

31: wire 32: hardened part

34: Vinyl 36: Carbon fiber

38: Index 40: Nonwoven fabric

42: Index 44: Liner

48: parking lot 50: towing road

51: universal joint 52: camera

In order to achieve the above object, the present invention, in the non-excavated sewer repair method, the step of preparing the packer and the unmanned camera installed in the packer in the sewage pipe to move the packer to the damaged area of the sewer pipe; An intimate step of injecting compressed air generated from an air compressor into the packer waiting for the preparation step, inflating the packer, and bringing the packer into close contact with the inner wall of the sewer pipe; A fluid feeding step of feeding fluid to an outlet of a packer waiting for the close contacting step; It is characterized in that it comprises a watertight test step of determining the degree of damage of the sewer pipe by checking the outflow of the air flowing out of the outlet of the packer side through the fluid conveying step.

In addition, as a step following the watertight test step, by supplying the water agent to the packer, the drug supply step so that the water agent passes through the outlet of the packer and the damaged portion of the sewer pipe soaked into the buried soil around the sewer pipe corresponding to the damaged portion; A control step of checking the air pressure of the packer or the degree of curing of the water stopper through an unmanned camera and a controller after the chemical supply step is performed; After the water hardening agent is cured, the packer air is deflected and contracted. After checking the repair status with the unmanned camera, the watertight test report, CCTV survey report, and repair construction report are immediately inputted and output through the computer and peripheral equipment mounted on the vehicle. It further comprises a step.

In addition, as a step following the water-tight test step, after removing the air of the packer to shrink, after removing the unmanned camera installed in the packer and the packer to the outside, the vinyl installation step of surrounding the peeling vinyl on the outer peripheral surface of the packer; Mixing the main material, the curing agent, and the accelerator in a predetermined ratio and coating the carbon fiber and the nonwoven fabric, and then wrapping the carbon fiber and the nonwoven fabric on the peeling vinyl; A second preparation step of repositioning the liner wound packer on the damaged part with an unmanned camera installed therein; A pressurizing step of inflating the packer by injecting compressed air from the outside into the packer in the second preparation step so that the carbon fibers and the nonwoven fabric adhere to the inner circumferential surface of the sewer pipe; A control step of checking the air pressure of the packer and the degree of curing of the carbon fiber and the nonwoven fabric through the unmanned camera and the controller after the pressing step; After the carbon fiber and the non-woven fabric is cured, the air of the packer is pulled out and shrunk, and after checking the maintenance status as an unmanned camera, the method further comprises a completion step of drawing out a survey and construction report on site.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 1a is a schematic diagram illustrating a GL-LC unexcavated sewer repair method according to the present invention. In addition, this figure shows the preparation step in each maintenance process to be described later. In addition, the repair method means a construction method for repair.

As shown, the GL-LC non-excavated sewer repair method according to the present invention is connected to one vehicle equipped with the vehicle 10, the packer 26 and the unmanned cameras introduced into the sewer pipe 30 through the manhole 16 Through (22). The packer 26 is connected to a chemical tank and an air compressor in the equipment-mounted vehicle 10 through the chemical supply pipe 18 and the compressed air supply pipe 20. At one end of the packer 26, an unmanned camera 22 is provided. The unmanned camera is installed in the cylinder is capable of moving forward and backward with respect to the packer (26).

The medicine supply pipe 18 connects the packer 26 with a medicine tank (not shown) mounted on the equipment-mounted vehicle 10 so that the medicine can be pumped into the packer 26. The compressed air supply pipe 20 is connected to an air compressor (not shown) mounted on the equipment-mounted vehicle 10 to supply compressed air to the packer 26. Wheels 28 are provided in front and rear of the packer 26, and outlets 24 are provided on the side surfaces. The outlet 24 is a kind of nozzle, and is a hole through which compressed air or a chemical supplied from the outside, as described later, exits.

The packer 26 comprised as mentioned above is made to move in the sewer pipe 30 by the wire 31. That is, when the worker drags the wire 31 in the direction of the arrow f as the winch 12 installed outside the manhole 16, the packer 26 moves in the direction of the arrow a. The wire 31 is guided by the guide roller 14 pre-installed by the worker before the operation is performed to move smoothly.

On the other hand, the unmanned camera 22 is installed and operated in the packer 26, so when the packer 26 moves, the unmanned camera 22 continuously operates to transmit the state inside the sewer pipe to an external monitor (not shown). When the unmanned camera 22 finds a damaged part while the packer 26 moves, the worker stops the packer 26 at a position corresponding to the damaged part and prepares to perform each step to be described later (FIG. 5). Take 110).

Figure 1b is in the preparation stage of the non-excavated sewer repair method according to the present invention, the installation of wires (31 in Fig. 1a) in the working conditions such as manhole defects, pipeline depression, joint loosening, traffic and structure obstacles in the opposite manhole The preparation step is shown when not possible.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown, there is a case in which the guide roller 14 may not be installed depending on the working conditions of the sewer pipe, in which case a self-propelled vehicle 48 that is a separate towing means is used. The self-propelled vehicle 48 is a kind of towing vehicle that operates by receiving power from the outside, and a camera 52 facing the traveling direction is installed on the vehicle body. The self-propelled vehicle 48 and the packer 26 is connected to the towing rod 50, the packer 26 is towed to move in the sewer pipe 30 as the self-propelled vehicle moves. Operation of the unmanned camera 22 continues during the movement of the packer 26 as described above.

In addition, by installing the universal joint 51 in the middle of the towing rod 50, the relative position between the self-propelled vehicle 48 and the packer 26 during the towing is changed, or the vibration surface of the self-propelled vehicle 48 or the bottom surface of the sewer pipe Even if the forward angle of the self-propelled vehicle 48 is changed due to the bending of the packer 26, the movement of the packer 26 is stably maintained. Of course, the traction is made by using a wire instead of the traction rod 50.

2 and 5 is a view showing a leakage test (leakage test) process of testing the watertight of the damaged portion in the sewer pipe 30 as the packer 26 waiting in the preparation step as described above.

As described above, since the packer 26 is connected to the chemical supply pipe 18 and the compressed air supply pipe 20, without the additional process, the packer waiting for the damaged part in the preparation step (110 of FIG. 5) ( 26) by pressing the compressed air to the close step (112).

As is known in the art, the drug supply pipe 18 connected to the packer 26 is connected to the outlet 24 in communication with a tube (not shown) installed inside the packer 26, as will be described later. In the chemical tank, the medicine flows directly through the inner space of the packer 26 to the outlet 24. In addition, since the compressed air supply pipe 20 is directly connected to the inner space of the packer 26, when the compressed air is pressed into the packer 26, the packer 26 is inflated like a balloon by the supplied air.

Therefore, when pressurized compressed air into the packer 26 to perform the close step 112, the packer 26 is expanded and the outer peripheral surface is in close contact with the inner peripheral surface of the sewer pipe 30, the packer 26 and the sewer pipe 30 The inner circumferential surface is kept confidential (contact step). In this state, the compressed air flows through the chemical supply pipe 18 to the packer 26 and performs the fluid conveying step 113. When the compressed air is pumped to the packer 26 side, the compressed air flows through the chemical supply pipe 18 to the outlet port 24 side. Therefore, if a crack or damage is generated in the sewage pipe which is in close contact with the outlet 24 side, the air which is compressed and waiting to escape to the outside of the sewage pipe through the crack or the damaged part (pressure feeding step). In addition, the watertight test may be performed using water instead of the compressed air supplied to the outlet 24.

As the air flows out through the outlet 24 as described above, the pressure in the packer 26 is lowered. Therefore, it is possible to know the degree of damage of the damaged part by the flow of air flowing out of the packer 26 through the controller (not shown) (watertight test step). Therefore, in order to perform the watertight test in the past, the inconvenience of having to close both sides of the sewer pipe and fill the water directly is eliminated. As described above, by performing a watertight test step 114 to determine the degree of damage of the sewer pipe 30 through the controller to complete the liquidity test process.

3 and 6 are diagrams for explaining the grouting process in the GL-LC non-excavation sewer repair method according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown, the grouting process according to the present embodiment is to infiltrate the chemicals into the soil around the damaged area 25 of the sewage pipe 30, thereby creating a water layer by curing the chemicals with the soil. In addition, the repair process is composed of a chemical supply step 116 and a control step 118 and the completion step 120 that follows the watertight test step (114 in Figure 5).

First, by performing the same steps as the watertight test process, to determine the degree of damage of the damaged part 25 of the sewage pipe 30, and then supplying the drug to the packer 26 through the chemical supply pipe (18) 116 is performed. The drug is a mixture of a liquid main ingredient, a curing agent, and an accelerator, and when cured, becomes a single index layer that blocks the flow of water and has waterproofness. The drug is of course mixed in different ratios depending on the nature of the surrounding soil or the environment of the damaged area.

As described above, the chemicals are pumped from the chemical tank in the equipment-mounted vehicle 10 to the packer 26, and the chemicals supplied into the packer 26 open the outlet 24 of the packer 26 by the continuous injection pressure. Through the damaged part 25 of the sewage pipe 30 through the direction of the arrow a through the absorption and mixing in the soil around the sewage pipe 30, it is cured over time to create a hardened portion 32 having a waterproof. The hardened portion 32 generated by absorbing the chemical acts as a barrier layer that does not pass water. As shown, since the hardened portion 32 is generated around the damaged portion 25 of the sewage pipe 30, the movement of water does not occur through the damaged portion 25 to prevent contamination of the soil.

In generating the hardened portion 32 through the chemical supply step 116, a control step 118 to properly maintain the pressure of the packer 26 so as to sufficiently penetrate the chemical into the soil is performed. The control step 118 is made through the unmanned camera 22 and the controller, applying the pressure continuously to the packer 26 so that the chemicals flowing out through the outlet 24 of the packer 26 is sufficiently unmanned camera ( 22).

After sufficient time has elapsed through the control step 118, the medicine is cured, and the air of the packer 26 is taken out and shrunk to check whether the damaged part 25 is restored as the unmanned camera 22. Completion step 120 is followed, the grouting process in the GL-LC non-excavation sewage pipe repair method is completed through the completion step 120.

4A, 4B, 4C, 4D, and 7 are diagrams for explaining a lining process in the GL-LC unexcavated sewer repair method according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

As shown in Figure 7, the non-excavated sewer repair method according to this embodiment is the vinyl installation step 122 and liner installation step 124 and the secondary preparation step 126 following the watertight test step 114 And, the pressing step 128, the control step 130 and the completion step 132.

Through the preparation step 110, the close contact step 112 and the watertight test step 114, if the damage of the damaged area is so severe that the grouting process cannot be repaired, the liner 44 is attached to the inner peripheral surface of the sewer pipe The method used is used.

That is, when it is confirmed through the watertight test step 114 that the damage degree of the sewer pipe 30 cannot be repaired by the grouting process, the worker removes the packer 26 from the sewer pipe 30 once and peels it to the packer 26. The vinyl installation step 122 covering the vinyl 34 and the liner installation step 124 covering the nonwoven fabric 40 and the carbon fiber 36 are performed.

The vinyl installation step 122 is a step of covering the peeling vinyl 34 on the circumferential surface of the packer 26 taken out from the sewer pipe 30. The peeling vinyl 34 is provided to easily separate the packer 26 from the liner 44 (Fig. 4D).

In order to facilitate separation of the liner and the packer, grease-like cream (oil) is applied to the outer circumferential surface of the vinyl 34, and then the carbon fiber 36 is covered and the main and hardeners are coated on the outer surface of the carbon fiber. And the non-woven fabric 40 is covered after coating the water repellent agent 38 evenly mixed with the accelerator. Subsequently, the liner installation step 124 is performed by applying an index agent 42 which is evenly mixed with a main material, a curing agent, and an accelerator to the outer surface of the nonwoven fabric 40. The subject is a resin, which acts as an adhesive and is easily cured by being mixed with a curing agent and an accelerator at an appropriate ratio. In addition, since the subject is a natural substance, it does not generate pollution in contact with water. It is also possible to cover the packer 26 with the nonwoven fabric and carbon fiber at a time by applying the above-mentioned subject, accelerator and hardener to the nonwoven fabric and carbon fiber cut to the appropriate size.

With the liner 44 installed on the outer circumferential surface of the packer 26 as described above, the secondary preparation step 126 of placing the packer 26 in the sewer pipe 30 again and placing the damaged part 25 at the previously found damaged part 25. Perform The secondary preparation step 126 is also made by positioning from the outside depending on the unmanned camera 22 provided in the packer 26.

4C, the compressed packer 26 is expanded by injecting compressed air from the outside into the packer 26 waiting at the damaged portion 25 of the sewer pipe 30 through the second preparation step 126. In this way, a pressing step 128 is performed to press the liner 44 surrounded by the outside of the packer 26 to be in close contact with the inner circumferential surface of the sewer pipe 30. As described above, since the mixture of the main material, the curing agent, and the accelerator is applied to the outer surface of the liner 44, the adhesion is performed while the liner 44 is in close contact with the inner circumferential surface of the sewer pipe 30 by the main adhesive force.

After sufficient time passes through the pressing step 128, a control step 130 of checking the air pressure of the packer or the degree of curing of the carbon fiber and the nonwoven fabric is performed through the unmanned camera 22 and the controller. As described above, when the packer 26 is inflated and the liner 44 is brought into close contact with the inner circumferential surface of the sewer pipe 30, and a predetermined time elapses, the nonwoven fabric 40 and the carbon fiber 36 are adhered to each other by the main agent and the curing agent. This is done by blocking the damaged part 25 of the sewage pipe 30 so that the water does not leak and the repair is made.

The control step 130 is followed by the completion step 132. Completion step 132 is after the completion of the curing of the carbon fiber 36 and the nonwoven fabric 40, the air supplied to the packer 26 to extract the shrinkage of the packer 26, as well as the liner 44 as an unmanned camera 22 ) Is inspected whether it is firmly attached to the inner peripheral surface of the sewage pipe (30). When the air is removed from the packer 26, the packer 26 and the liner 44 are easily separated by the release vinyl 34.

After confirming that the maintenance state is good through the unmanned camera 22, when the air packer is taken out to the outside, the sewer pipe 30 has a damage portion of the sewer pipe 30 as shown in FIG. 4D. The membrane remains in a state, and the lining process in the GL-LC sewer pipe repair method according to the embodiment of the present invention is completed.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

GL-LC non-excavated sewage pipe repair method of the present invention made as described above is equipped with equipment capable of performing various repair methods in one vehicle, camera shooting survey, watertight test, grouting process or lining process in one place It can be carried out, even in the case of construction requiring multiple construction methods, it does not interfere with the traffic around the workplace due to the number of work vehicles, and in the case of construction requiring multiple construction methods, it does not interfere with the traffic around the workplace. The work can be done with a high and low number of people, so it costs less. In addition, by installing the unmanned camera in the packer to move the packer and at the same time the shooting of the unmanned camera is faster the speed of work, do not need the operation mechanism to move the unmanned camera can work in a simpler working environment. In addition, even if it is not possible to install the guide roller in the sewage pipe due to the working conditions, it is possible to move the packer as a self-propelled autonomous vehicle can be carried out efficiently in the harsh environment.

Claims (3)

In the non-excavated sewer repair method, A packer 26 and a unmanned camera 22 installed in the packer 26 are put into and moved to the sewer pipe to prepare the packer at the damaged portion of the sewer pipe 110; A close contact step 112 of injecting compressed air generated from an air compressor into the packer 26 waiting for the preparation step 110 to expand the packer 26 and to closely contact the inner wall of the sewer pipe; A fluid feeding step (113) for feeding fluid to an outlet (24) of the packer (26) waiting for the contacting step (112); GL-LC ratio characterized in that it comprises a water-tight test step (114) to determine the degree of damage of the sewer pipe by checking the outflow of the air flowing out of the outlet port 24 of the packer side through the fluid pressure step (113) Excavation sewer repair method. According to claim 1, After the watertight test step 114, A drug supplying step (116) for conveying the antistatic agent to the packer 26 so that the antistatic agent passes through the outlet of the packer 26 and the damaged portion of the sewer pipe and permeates the buried soil around the sewer pipe corresponding to the damaged portion; A control step 118 of checking the air pressure of the packer or the degree of hardening of the water stopper through the unmanned camera 22 and the controller after the drug supply step 116 is performed; After the water hardening agent is cured, the packer's air is deflected and shrunk, and after checking the repair status with an unmanned camera, the completion of inputting the watertight test report CCTV investigation report and repair construction report immediately through the computer and peripheral equipment mounted on the vehicle. GL-LC non-excavated sewer repair method characterized in that it further comprises (120). According to claim 1, After the watertight test step 114, After removing the air of the packer to shrink, after removing the packer and the unmanned camera installed in the packer to the outside, the vinyl installation step 122 for enclosing the peeling vinyl on the outer peripheral surface of the packer; A liner installation step (124) of mixing the main material, the curing agent, and the accelerator in a predetermined ratio and coating the carbon fiber and the nonwoven fabric on the peeling vinyl; A second preparation step (126) of placing the packer on which the liner (44) is wound, on the damaged part with the unmanned camera installed therein; Injecting compressed air from the outside to the packer in the secondary preparation step 126 to inflate the packer to press the pressure step 128 so that the carbon fiber and the non-woven fabric is in close contact with the inner peripheral surface of the sewer pipe; A control step 130 of checking the air pressure of the packer and the degree of curing of the carbon fiber and the nonwoven fabric through the unmanned camera and the controller after the pressing step 128; After the carbon fiber and the non-woven fabric is cured, the air of the packer is drawn out and shrunk, and after checking the repair status as an unmanned camera, the GL- further comprising a completion step 132 of drawing out a survey report and a construction report on site. LC unexcavated sewer repair