Underground sewage pipeline photocuring repair method

Abstract

The invention discloses a photocuring repair method for an underground sewage pipeline, and relates to the technical field of pipeline repair, the photocuring repair method for the underground sewage pipeline comprises the following steps: plugging the upstream and the downstream; the to-be-repaired section is cleaned; the inner wall is polished; the bottom film and the resin hose are dragged into the to-be-repaired section in sequence; one end of the resin hose is connected with a first binding head, and the other end of the resin hose is plugged; a second binding head is connected to one end of the to-be-repaired section of the original pipeline, and the other end of the original pipeline is blocked; the resin hose is inflated through the first binding head, and meanwhile, air is sucked into an annular space between the resin hose and the original pipeline through the second binding head until the resin hose is tightly attached to the inner wall of the original pipeline; a photocuring lamp holder is pulled into the resin hose, and photocuring treatment is conducted on the resin hose through an ultraviolet lamp on the photocuring lamp holder; cutting off the two ends of the resin hose, and removing the second binding head. And the resin hose is tightly attached to the to-be-repaired pipeline, and the repairing effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline repair, and in particular to a light-curing repair method for an underground sewage pipeline. Background Art

[0002] As an important part of urban infrastructure, underground sewage pipes undertake the important task of urban drainage. Due to long-term use and natural aging, many underground sewage pipes have problems such as damage and leakage, and are in urgent need of repair. Although the traditional excavation repair method is simple to construct, due to the development of the city, excavation repair is subject to more and more restrictions, and it also affects the environment, transportation and residents' lives. Therefore, trenchless repair technology is being widely used due to its technical convenience and other characteristics.

[0003] Photocuring repair is a trenchless repair technology that uses mechanical traction to drag a hose that is pre-soaked in photosensitive resin into the pipe that needs to be repaired, uses compressed air to tightly fit the resin hose to the inner wall of the pipe, and then uses ultraviolet light to cure the resin material, thereby forming a strong and durable new resin-lined pipe inside the pipe. However, since the surface of old underground sewage pipes is usually rusty and not smooth enough, the resin hose does not fit the inner wall of the pipe well, and the light-cured resin hose is easy to fall off the original pipe, resulting in poor repair results and poor durability of the repaired pipe. Summary of the invention

[0004] The main purpose of the present invention is to propose a photocuring repair method for underground sewage pipes, aiming to solve the technical problem in the prior art that when photocuring repairs underground sewage pipes, the resin hose is not sufficiently fitted to the original pipe, resulting in poor repair effect.

[0005] To achieve the above-mentioned purpose, the light-curing repair method for underground sewage pipes proposed in the present invention comprises the following steps: blocking the upstream and downstream of the section to be repaired in the underground sewage pipe; cleaning the section to be repaired; polishing the inner wall of the section to be repaired; dragging the base film and the resin hose into the section to be repaired in turn, so that the base film is placed under the resin hose; the two ends of the resin hose are respectively extended to two inspection wells located at the inlet and outlet of the section to be repaired; connecting a first tying head at one end of the resin hose and blocking the other end of the resin hose; connecting a second tying head at one end of the original pipe of the section to be repaired and blocking the other end of the original pipe; inflating the resin hose through the first tying head, and at the same time sucking air into the annular space between the resin hose and the original pipe through the second tying head until the resin hose is tightly attached to the inner wall of the original pipe; pulling a light-curing lamp holder into the resin hose, and light-curing the resin hose through the ultraviolet lamp on the light-curing lamp holder; cutting off the parts of the two ends of the resin hose extending out of the original pipe, and removing the second tying head.

[0006] In one embodiment, the step of dragging the bottom film and the resin hose into the section to be repaired in sequence so that the bottom film is placed under the resin hose includes: pulling a steel wire rope between the two inspection wells located at the entrance and exit of the section to be repaired; providing two pulleys at both ends of the steel wire rope; connecting one end of the bottom film to the steel wire rope, and using a winch to drive the steel wire rope to move around the two pulleys to drag the bottom film into the section to be repaired; loosening the connection between the bottom film and the steel wire rope, so that the bottom film is laid under the section to be repaired; connecting one end of the resin hose to the steel wire rope, and using a winch to drive the steel wire rope to move around the two pulleys to drag the resin hose into the section to be repaired.

[0007] In one embodiment, before the step of connecting one end of the base film to the steel wire rope and using a winch to drive the steel wire rope to move around the two pulleys to drag the base film into the section to be repaired, the underground sewage pipe light-curing repair method also includes the step of laying an anti-scratch cushion layer in the section to be repaired.

[0008] In one embodiment, the step of cleaning the section to be repaired includes: sucking and discharging the sewage in the section to be repaired; injecting clean water into the section to be repaired and stirring to dilute the sludge in the section to be repaired into mud; sucking and discharging the mud at the inspection well at the outlet of the section to be repaired; high-pressure flushing of the section to be repaired; and cleaning the solid residue in the section to be repaired.

[0009] In one embodiment, the step of high-pressure flushing of the section to be repaired includes: setting a high-pressure dredging vehicle at the inspection well located at the entrance of the section to be repaired; setting a sewage suction truck at the inspection well located at the exit of the section to be repaired; high-pressure flushing of the section to be repaired by the high-pressure dredging vehicle, and suctioning the inside of the section to be repaired by the sewage suction truck.

[0010] In one embodiment, the step of cleaning the solid residues in the section to be repaired includes: grinding the hardened cement slurry in the section to be repaired by a grinding robot; cutting the tree roots in the section to be repaired by a chain cutter; and lifting the solid residues in the section to be repaired to the outside of the inspection well through the inspection well.

[0011] In one embodiment, the step of grinding the inner wall of the section to be repaired includes: using a grinding wheel to grind the uneven positions of the inner wall of the section to be repaired; performing sandblasting to remove rust on the inner wall of the section to be repaired; and manually grinding the local attachment positions on the inner wall of the section to be repaired using sandpaper.

[0012] In one embodiment, the step of blocking the upstream and downstream of the section to be repaired in the underground sewage pipe includes: blocking the outlet of the pipe located upstream of the section to be repaired; and blocking the inlet of the pipe located downstream of the section to be repaired.

[0013] In one embodiment, the step of blocking the outlet of the pipe located upstream of the section to be repaired includes: setting a baffle at the outlet of the pipe located upstream of the section to be repaired; using the baffle to set a rubber airbag at the outlet of the pipe located upstream of the section to be repaired; and inflating the rubber airbag until the outlet of the pipe located upstream of the section to be repaired is blocked by the baffle and the rubber airbag together.

[0014] In one embodiment, after the step of cutting off the portions of the two ends of the resin hose extending out of the original pipe and removing the second tying head, the underground sewage pipe light-curing repair method further includes the steps of: performing a quality inspection on the inner wall of the section to be repaired; after the quality inspection of the inner wall of the section to be repaired is qualified, removing the blockages upstream and downstream of the section to be repaired.

[0015] The light-curing repair method for underground sewage pipes proposed by the present invention cleans the inside of the section to be repaired and polishes the inner wall of the section to be repaired, so that the inner wall of the section to be repaired has a good and stable repair environment, ensuring that the resin hose can fit tightly with the inner wall of the section to be repaired; then the resin hose is dragged into the section to be repaired, a first tack is set at one end of the resin hose and the other end is sealed, a second tack is set at one end of the section to be repaired and the other end is sealed, air is inflated into the resin hose through the first tack, and at the same time, air is sucked into the annular space between the resin hose and the section to be repaired through the second tack, so that the resin hose fits tightly with the inner wall of the section to be repaired under the combined action of internal positive pressure and external negative pressure, thereby improving the bonding force between the resin hose and the section to be repaired, and after the resin hose undergoes a light-curing reaction, it is ensured that the resin hose fits tightly with the section to be repaired, the repair effect is good, and the durability of the repaired pipeline is effectively enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 A schematic flow chart of an embodiment of a light-curing repair method for underground sewage pipes provided by the present invention.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] Photocuring repair is a trenchless repair technology that uses mechanical traction to drag a hose that is pre-soaked in photosensitive resin into the pipe that needs to be repaired, uses compressed air to tightly fit the resin hose to the inner wall of the pipe, and then uses ultraviolet light to cure the resin material, thereby forming a strong and durable new resin-lined pipe inside the pipe. However, since the surface of old underground sewage pipes is usually rusty and not smooth enough, the resin hose does not fit the inner wall of the pipe well, and the light-cured resin hose is easy to fall off the original pipe, resulting in poor repair results and poor durability of the repaired pipe.

[0023] The present invention provides a light-curing repair method for underground sewage pipes, comprising the following steps:

[0024] S10: blocking the upstream and downstream of the section to be repaired in the underground sewage pipe;

[0025] S20: Cleaning the section to be repaired;

[0026] S30: grinding the inner wall of the section to be repaired;

[0027] S40: dragging the bottom film and the resin hose into the section to be repaired in sequence, so that the bottom film is placed under the resin hose; both ends of the resin hose are respectively extended to two inspection wells located at the inlet and outlet of the section to be repaired;

[0028] S50: connecting a first tying head at one end of the resin hose and sealing the other end of the resin hose;

[0029] S60: Connecting a second tying head to one end of the original pipeline of the section to be repaired, and sealing the other end of the original pipeline;

[0030] S70: inflating the resin hose through the first piercing head, and simultaneously sucking air into the annular space between the resin hose and the original pipe through the second piercing head until the resin hose is tightly attached to the inner wall of the original pipe;

[0031] S80: pulling a light-curing lamp rack into the resin hose, and performing light-curing treatment on the resin hose by using an ultraviolet lamp on the light-curing lamp rack;

[0032] S90: Cut off the parts of both ends of the resin hose extending out of the original pipe, and remove the second tying head.

[0033] See also Figure 1 When repairing a section of pipeline to be repaired, the pipes located upstream and downstream of the section to be repaired in the underground sewage pipe are blocked respectively to cut off the section to be repaired from the underground sewage pipe, so as to create a closed environment for the section to be repaired. After blocking, it is necessary to clean the sewage and pollutants inside the section to be repaired to ensure that the inner wall of the pipe is clean, and then polish the inner wall of the section to be repaired to remove the coating and rust attached to the inner wall. By first dragging the bottom film into the section to be repaired, and then dragging the resin hose, during the dragging process of the resin hose, the bottom film is placed at the bottom of the resin hose, thereby providing protection for the resin hose to prevent the resin hose from rubbing against the inner wall of the section to be repaired during the dragging process. When the resin hose is dragged into place, that is, the two ends of the resin hose extend to the outside of the two ends of the section to be repaired, one end of the resin hose is blocked, and a first tying head for easy control of opening and closing is installed at the other end, and a second tying head is installed at one end of the section to be repaired, and the other end of the section to be repaired is blocked, and the second tying head is used to control the opening and closing of the annular space between the resin hose and the inner wall of the section to be repaired. By using the first tying head to inflate the resin hose, and using the second tying head to suck air into the annular space between the resin hose and the section to be repaired, a positive pressure is formed in the resin hose, and a negative pressure is formed between the resin hose and the section to be repaired, so that the resin hose fits tightly with the inner wall of the pipe section to be repaired under the combined action of the internal positive pressure and the external negative pressure. Then, a light-curing lamp holder is pulled into the inflated resin hose, and the inner wall of the resin hose is irradiated by the ultraviolet lamp on the light-curing lamp holder. During the irradiation, the process of inflating the resin hose and sucking air into the annular space between the resin hose and the section to be repaired is maintained, so that the resin hose remains in a state of fitting with the inner wall of the pipe section to be repaired to complete the curing. Finally, the parts of the resin hose extending outside the section to be repaired are cut off on both sides, so that the first tying head is separated from the resin hose, and the second tying head is removed to complete the repair construction of the pipe section to be repaired.

[0034] The light-curing repair method for underground sewage pipes proposed by the present invention cleans the inside of the section to be repaired and polishes the inner wall of the section to be repaired, so that the inner wall of the section to be repaired has a good and stable repair environment, ensuring that the resin hose can fit tightly with the inner wall of the section to be repaired; then the resin hose is dragged into the section to be repaired, a first tack is set at one end of the resin hose and the other end is sealed, a second tack is set at one end of the section to be repaired and the other end is sealed, air is inflated into the resin hose through the first tack, and at the same time, air is sucked into the annular space between the resin hose and the section to be repaired through the second tack, so that the resin hose fits tightly with the inner wall of the section to be repaired under the combined action of internal positive pressure and external negative pressure, thereby improving the bonding force between the resin hose and the section to be repaired, and after the resin hose undergoes a light-curing reaction, it is ensured that the resin hose fits tightly with the section to be repaired, the repair effect is good, and the durability of the repaired pipeline is effectively enhanced.

[0035] In one embodiment, step S40 includes:

[0036] S41: Tie a steel wire rope between the two inspection wells located at the inlet and outlet of the section to be repaired;

[0037] S42: two pulleys are respectively arranged at both ends of the steel wire rope;

[0038] S43: connecting one end of the bottom film to the steel wire rope, and using a winch to drive the steel wire rope to move around the two pulleys to drag the bottom film into the section to be repaired;

[0039] S44: loosening the connection between the bottom membrane and the steel wire rope, so that the bottom membrane is laid below the section to be repaired;

[0040] S45: Connect one end of the resin hose to the steel wire rope, and use a winch to drive the steel wire rope to move around the two pulleys to drag the resin hose into the section to be repaired.

[0041] It can be explained that the section to be repaired is divided according to the position of the inspection well, and the inlet and outlet of the section to be repaired are respectively located in two inspection wells. The two inspection wells can realize the material transfer from the section to be repaired to the ground. By pulling a steel wire rope between the two inspection wells, the steel wire rope is passed through the section to be repaired, and two pulleys are respectively set at both ends of the steel wire rope so that the steel wire rope can move in the section to be repaired. By connecting the bottom film with one end of the steel wire rope, the winch drives the steel wire rope to move in the section to be repaired, so as to drive the bottom film to move in the section to be repaired through the steel wire rope, thereby dragging the bottom film from the inspection well at one end of the section to be repaired to the inspection well at the other end, so that the bottom film is laid in the section to be repaired. Similarly, after the bottom film is laid at the bottom of the section to be repaired, by connecting one end of the resin hose to the steel wire rope, the winch drives the steel wire rope to drive the resin hose to move in the section to be repaired, so that the resin hose is dragged from the inspection well at one end of the section to be repaired to the inspection well at the other end, and the mechanized dragging of the bottom film and the resin hose is realized. During the dragging process of the resin hose, the bottom film is placed at the bottom of the resin hose so that the bottom film provides protection for the resin hose, reduces the friction between the resin hose and the inner wall of the pipe during the dragging process, and reduces the risk of damage to the resin hose.

[0042] In one embodiment, before step S43, the underground sewage pipe light-curing repair method provided by the present invention further includes the following steps:

[0043] S429: Laying an anti-scratch cushion layer in the section to be repaired.

[0044] Furthermore, the anti-scratch cushion layer is laid between the base membrane and the pipe of the section to be repaired, providing additional protection for the base membrane and the resin hose, effectively preventing the base membrane and the resin hose from being scratched by sharp objects in the section to be repaired, and further protecting the base membrane and the resin hose.

[0045] In one embodiment, step S20 includes:

[0046] S21: sucking and discharging the sewage in the section to be repaired;

[0047] S22: injecting clean water into the section to be repaired and stirring to dilute the sludge in the section to be repaired into slurry;

[0048] S23: sucking and discharging the mud at the inspection well at the outlet of the section to be repaired;

[0049] S24: performing high pressure washing on the section to be repaired;

[0050] S25: Cleaning the solid residues in the section to be repaired.

[0051] It should be noted that due to the high sludge content in the sewage, a large amount of sludge is deposited at the bottom of the section to be repaired after the sewage in the section to be repaired is pumped out. The sludge is diluted into slurry by injecting clean water, so that the precipitated sludge is sucked out of the underground sewage pipe together with the slurry. The section to be repaired is then flushed with high pressure, and the mud and dirt remaining on the inner wall of the section to be repaired are washed away by the high-pressure flushing force, and discharged out of the section to be repaired with the water flow to clean the pollutants with smaller weight or volume in the section to be repaired. For solid pollutants with larger weight or volume, construction personnel or machinery are required to enter the section to be repaired for cleaning, and multiple cleaning methods are used to clean them one by one, so that the cleaning is more thorough, ensuring that the inner wall of the section to be repaired remains clean for subsequent repair operations.

[0052] In one embodiment, step S24 includes:

[0053] S241: installing a high-pressure dredging vehicle at the inspection well located at the entrance of the section to be repaired;

[0054] S242: installing a sewage suction truck at the inspection well located at the exit of the section to be repaired;

[0055] S243: The section to be repaired is subjected to high-pressure flushing by the high-pressure dredging vehicle, and the section to be repaired is subjected to suction by the sewage suction vehicle.

[0056] Furthermore, by installing a high-pressure dredging vehicle at the upstream inspection well of the section to be repaired and a sewage suction truck at the downstream inspection well, the high-pressure water flow generated by the high-pressure dredging vehicle is used to flush the section to be repaired to remove stubborn dirt and sediment on the inner wall of the pipeline. The high-pressure dredging vehicle can provide a strong water flow to effectively peel off and flush away the blockages in the pipeline; the sewage and debris generated after high-pressure flushing are sucked out of the section to be repaired by the sewage suction truck to keep the pipeline unobstructed. The sewage suction truck has a strong suction force and can quickly remove liquid and solid waste in the pipeline. The combined operation of high-pressure flushing and sewage suction can quickly remove stubborn dirt in the pipeline, effectively improve the clearing effect, ensure the cleanliness of the pipeline, and the mechanized operation reduces the time personnel are exposed to harmful environments and dangerous conditions, improves the safety of the operation, and improves the efficiency of the clearing operation.

[0057] In one embodiment, step S25 includes:

[0058] S251: grinding the hardened cement slurry in the section to be repaired by a grinding robot;

[0059] S252: cutting the tree roots in the section to be repaired by a chain cutter;

[0060] S253: The solid residue in the section to be repaired is lifted from the inspection well to the outside of the inspection well.

[0061] It should be noted that high-pressure flushing of the section to be repaired is suitable for pollutants with smaller weight or volume, while for solid residues of cement slurry with larger weight or volume, which are tightly adhered to the inner wall of the section to be repaired and have been hardened, a grinding robot is used to grind the hardened cement slurry in the section to be repaired, and a chain cutter is used to cut the tree roots in the section to be repaired, so as to reduce the volume of the hardened cement slurry and tree roots, so as to facilitate the lifting of the solid residues to the outside of the section to be repaired through the inspection well, and more thoroughly remove the solid residues in the pipeline to improve the quality of clearing. Using automated equipment for grinding and cutting can greatly increase the speed of clearing operations and reduce the time and labor intensity of manual operations.

[0062] In one embodiment, step S30 includes:

[0063] S31: grinding the uneven position of the inner wall of the section to be repaired using a grinding wheel;

[0064] S32: performing sandblasting and rust removal treatment on the inner wall of the section to be repaired;

[0065] S33: manually grinding the local attachment position of the inner wall of the section to be repaired using sandpaper.

[0066] It can be explained that the uneven positions of the inner wall of the pipe section to be repaired are polished by a grinding wheel to make the inner wall of the pipe form a smoother surface, the rust and other attachments on the inner wall of the pipe section to be repaired are removed by sandblasting, and the inner wall of the pipe section to be repaired has a fine and uniform roughness, and finally the local attachments on the inner wall of the pipe section to be repaired are manually polished with sandpaper to make the roughness distribution of the entire inner wall of the pipe more uniform, so that the inner wall of the pipe section to be repaired forms an environment suitable for fitting with the resin hose, thereby improving the adhesion between the repair material and the inner wall of the section to be repaired and enhancing the repair effect.

[0067] In one embodiment, step S10 includes:

[0068] S11: blocking the outlet of the pipeline located upstream of the section to be repaired;

[0069] S12: blocking the inlet of the pipeline downstream of the section to be repaired.

[0070] It should be noted that the section to be repaired is divided according to the location of the inspection wells in the underground sewage pipe. The inlet and outlet of the section to be repaired are located in two inspection wells respectively. The pipeline located upstream of the section to be repaired shares the same inspection well with the section to be repaired, and the outlet of the pipeline located upstream of the section to be repaired and the inlet of the section to be repaired are located in the same inspection well, and the inlet of the pipeline located downstream of the section to be repaired and the outlet of the section to be repaired are located in the same inspection well. By blocking the outlet of the pipeline located upstream of the section to be repaired and the inlet of the pipeline located downstream of the section to be repaired, the section to be repaired and the two inspection wells are isolated from the underground sewage pipe, thereby facilitating subsequent repair construction.

[0071] In one embodiment, step S11 includes:

[0072] S111: installing a baffle at the outlet of the pipeline upstream of the section to be repaired;

[0073] S112: using the baffle, setting a rubber airbag at the outlet of the pipeline located upstream of the section to be repaired;

[0074] S113: Inflate the rubber airbag until the baffle and the rubber airbag together block the outlet of the pipeline upstream of the section to be repaired.

[0075] Furthermore, when blocking the outlet of the pipeline located upstream of the section to be repaired, a baffle is installed at the outlet, the baffle is circumferentially arranged at the outlet, and the baffle is used as a supporting structure. A rubber airbag is arranged inside the baffle, and the rubber airbag is inflated to make the rubber airbag press against the baffle, so that the outlet is blocked by the baffle and the rubber airbag. Similarly, the same structure is used to block the inlet of the pipeline located downstream of the section to be repaired. The rubber airbag is used in combination with the baffle as the blocking structure. The rubber airbag is simple to operate and quick to construct, and can adapt to pipelines of different shapes and sizes, effectively improving the tightness of the blocking.

[0076] In one embodiment, after step S90, the light-curing repair method for underground sewage pipes provided by the present invention further comprises the following steps:

[0077] S100: Performing quality inspection on the inner wall of the section to be repaired;

[0078] S110: After the inner wall quality inspection of the section to be repaired is qualified, the blockages upstream and downstream of the section to be repaired are removed.

[0079] It can be explained that the quality inspection of the inner wall of the repaired section can be carried out by using a crawling robot equipped with a high-resolution camera to conduct visual inspection of the inner wall of the pipe section to be repaired, and by using sonar to conduct acoustic wave detection in the repaired section. The image of the inner wall of the section to be repaired is obtained by a high-resolution camera, which is convenient for construction personnel to intuitively understand the clearing condition of the inner wall of the section to be repaired, including dirt, cracks, corrosion, sediment, etc., which is convenient for judging the clearing quality and providing data support for subsequent maintenance and management. The sonar is also used to review the pollutants in the section to be repaired. By emitting sound waves and analyzing the echoes, the type, location and quantity of pollutants in the pipeline can be accurately judged, and the condition in the pipeline can be more comprehensively and accurately evaluated to ensure a good clearing effect. After the inspection is qualified, it means that the repair work of the section to be repaired is completed, and the plugging structures upstream and downstream of the section to be repaired can be removed to restore the connection of the section to be repaired to the underground sewage pipeline.

[0080] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A light-curing repair method for underground sewage pipes, characterized in that: Includes steps: Blocking the upstream and downstream of the section to be repaired in the underground sewage pipe; Cleaning the section to be repaired; Grinding the inner wall of the section to be repaired; Drag the bottom film and the resin hose into the section to be repaired in sequence, so that the bottom film is placed under the resin hose; both ends of the resin hose are respectively extended to two inspection wells located at the inlet and outlet of the section to be repaired; Connect a first tying head to one end of the resin hose and seal the other end of the resin hose; Connect a second tying head to one end of the original pipeline of the section to be repaired, and seal the other end of the original pipeline; Inflate the resin hose through the first piercing head, and simultaneously suck air into the annular space between the resin hose and the original pipe through the second piercing head until the resin hose fits tightly against the inner wall of the original pipe; Pulling a light-curing lamp holder into the resin hose, and performing light-curing treatment on the resin hose by using an ultraviolet lamp on the light-curing lamp holder; The portions of both ends of the resin hose extending out of the original pipe are cut off, and the second tying head is removed.

2. The light-curing repair method for underground sewage pipes according to claim 1, characterized in that: The step of dragging the base film and the resin hose into the section to be repaired in sequence so that the base film is placed under the resin hose comprises: Tie a steel wire rope between the two inspection wells located at the entrance and exit of the section to be repaired; Two pulleys are respectively arranged at both ends of the steel wire rope; Connecting one end of the bottom film to the steel wire rope, and using a winch to drive the steel wire rope to move around the two pulleys to drag the bottom film into the section to be repaired; Loosening the connection between the bottom membrane and the steel wire rope, so that the bottom membrane is laid below the section to be repaired; One end of the resin hose is connected to the steel wire rope, and a winch is used to drive the steel wire rope to move around the two pulleys, so as to drag the resin hose into the section to be repaired.

3. The light-curing repair method for underground sewage pipes according to claim 2, characterized in that: Before the step of connecting one end of the bottom membrane to the steel wire rope and using a winch to drive the steel wire rope to move around the two pulleys to drag the bottom membrane into the section to be repaired, the underground sewage pipe light-curing repair method further includes the following steps: A scratch-resistant cushion layer is laid in the section to be repaired.

4. The light-curing repair method for underground sewage pipes according to claim 1, characterized in that: The step of cleaning the section to be repaired comprises: Suctioning and discharging sewage in the section to be repaired; Injecting clean water into the section to be repaired and stirring to dilute the sludge in the section to be repaired into slurry; Sucking and discharging the mud at the inspection well at the outlet of the section to be repaired; Performing high-pressure flushing on the section to be repaired; Clean the solid residues in the section to be repaired.

5. The light-curing repair method for underground sewage pipes according to claim 4, characterized in that: The step of high-pressure flushing the section to be repaired comprises: A high-pressure dredging vehicle is provided at the inspection well located at the entrance of the section to be repaired; A sewage suction truck is provided at the inspection well located at the exit of the section to be repaired; The section to be repaired is flushed with high pressure by the high-pressure dredging vehicle, and the section to be repaired is sucked by the sewage suction vehicle.

6. The light-curing repair method for underground sewage pipes according to claim 4, characterized in that: The step of cleaning the solid residue in the section to be repaired comprises: Grinding the hardened cement slurry in the section to be repaired by a grinding robot; Cutting the tree roots in the section to be repaired by a chain cutter; The solid residue in the section to be repaired is lifted and transported to the outside of the inspection well through the inspection well.

7. The light-curing repair method for underground sewage pipes according to any one of claims 1 to 6, characterized in that: The step of grinding the inner wall of the section to be repaired comprises: Grinding the uneven position of the inner wall of the section to be repaired using a grinding wheel; Performing sandblasting and rust removal treatment on the inner wall of the section to be repaired; The local attachment position of the inner wall of the section to be repaired is manually polished using sandpaper.

8. The light-curing repair method for underground sewage pipes according to any one of claims 1 to 6, characterized in that: The step of blocking the upstream and downstream of the section to be repaired in the underground sewage pipe comprises: Blocking the outlet of the pipeline located upstream of the section to be repaired; The inlet of the pipeline downstream of the section to be repaired is blocked.

9. The light-curing repair method for underground sewage pipes according to claim 8, characterized in that: The step of blocking the outlet of the pipeline upstream of the section to be repaired comprises: A baffle is provided at the outlet of the pipeline located upstream of the section to be repaired; Using the baffle, a rubber air bag is arranged at the outlet of the pipeline located upstream of the section to be repaired; Inflate the rubber airbag until the baffle and the rubber airbag together block the outlet of the pipeline located upstream of the section to be repaired.

10. The light-curing repair method for underground sewage pipes according to any one of claims 1 to 6, characterized in that: After the steps of cutting off the portions of the two ends of the resin hose extending out of the original pipe and removing the second tying head, the underground sewage pipe light-curing repair method further comprises the steps of: Performing quality inspection on the inner wall of the section to be repaired; After the inner wall quality inspection of the section to be repaired is qualified, the blockages upstream and downstream of the section to be repaired are removed.

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