CN111456196B - Grouting structure for repairing sewage pipeline and pipeline grouting repairing method - Google Patents
Grouting structure for repairing sewage pipeline and pipeline grouting repairing method Download PDFInfo
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- CN111456196B CN111456196B CN202010311794.9A CN202010311794A CN111456196B CN 111456196 B CN111456196 B CN 111456196B CN 202010311794 A CN202010311794 A CN 202010311794A CN 111456196 B CN111456196 B CN 111456196B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
- E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining
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Abstract
The invention relates to a grouting structure for repairing a sewage pipeline and a pipeline grouting repairing method, which comprise a pipeline lining for repairing the sewage pipeline, wherein the pipeline lining comprises an outer lining pipe and an inner lining pipe, the outer lining pipe is attached to the inner side of the sewage pipeline, the inner lining pipe is arranged inside the outer lining pipe, a grouting opening for grouting to a to-be-repaired position of the sewage pipeline is formed in the outer lining pipe, a grouting spray pipe is arranged in the grouting opening, one end of the grouting spray pipe is connected with a grouting pipe, the grouting pipe is positioned between the inner lining pipe and the outer lining pipe, and a plurality of fixing components for protecting and fixing the grouting pipe are arranged between the inner lining pipe and the outer lining pipe. The invention has the advantages that: the method combines grouting with a lining pipe repairing method, and improves the repairing effect of the sewage pipeline.
Description
Technical Field
The invention relates to the technical field of sewage pipeline repair, in particular to a grouting structure for sewage pipeline repair and a pipeline grouting repair method.
Background
The sewage pipeline has more corrosive gas and improper operation and maintenance, so that the concrete pipe channel has the defects of serious corrosion, leakage and the like, the normal drainage function of the pipe channel is influenced, and accidents such as ground collapse and the like are easily caused. There are two general categories of current repairs to damaged pipes: one is a pipeline repairing technology based on excavation, which is suitable for places with serious staggered joint or serious sinking of pipelines, low population density, wide construction site and relatively small influence on traffic; the other type is a pipeline repairing technology based on non-excavation, and the pipeline repairing technology is suitable for places where pipeline dislocation or sinking is not serious, pipeline line leakage occurs, joints crack occurs, urban center sections and excavation seriously influences traffic. The trenchless repairing technology has the advantages of small negative influence on repairing, small occupied area, weak influence on the ground, traffic, environment, surrounding underground pipelines and the like, and is more and more emphasized by the management department of the underground pipeline industry.
The trenchless repairing technology of the pipeline generally adopts the repairing methods of spraying, grouting, partial or integral lining and the like for treatment. However, during spray repair, since the spray repair is performed on a normal pressure or an open working surface, it is difficult to achieve full space filling of the repair material for the defective position of the pipeline and to ensure the full compactness; especially, before repairing a local or whole lining of a small-diameter pipeline, the pipe diameter is too small, grouting filling or water stop pretreatment cannot be carried out on defects, and then in the process of repairing the local or whole lining and the like, the problem that repair materials are easily washed by water (such as leakage water) in the pipeline is solved, and in addition, a larger gap still exists in the defect position wrapped by the repair materials after the repair is finished. In addition, when conventional grouting water stopping repair is carried out, grouting holes need to be arranged on the pipe wall, the grouting holes need to damage the pipeline structure, and solution is needed.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the invention is to provide a grouting structure for repairing a sewage pipeline and a pipeline grouting repairing method, and the grouting structure has the advantages that: the method combines grouting with a lining pipe repairing method, and improves the repairing effect of the sewage pipeline.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a slip casting structure for sewer line restoration, includes the pipeline inside lining that is used for restoreing the sewer line, and the pipeline inside lining includes and is used for pasting the bushing pipe and the interior bushing pipe of setting inside the bushing pipe that leans on at the sewer line inboard, be provided with on the bushing pipe and be used for waiting to restore the slip casting mouth that the department carries out the slip casting to the sewer line, be provided with the slip casting spray tube in the slip casting mouth, the one end of slip casting spray tube is connected with the slip casting pipe, the slip casting pipe is located between bushing pipe and the bushing pipe, and is provided with a plurality of fixed subassemblies that are used for protecting fixed slip casting pipe between bushing pipe and the bushing pipe.
By adopting the technical scheme, when a worker repairs and grouts the sewage pipeline, the outer liner pipe can be placed in the pipeline to be repaired, the grouting spray pipe in the grouting opening of the outer liner pipe is placed at the damaged part of the pipeline to be repaired, and then fixed grout is introduced into the grouting pipe, so that the fixed grout enters the damaged part of the pipeline to be repaired and the soil layer to be solidified and filled, the soil body and the pipeline outside the damaged pipeline are reinforced, and the pipeline structure is prevented from being damaged; meanwhile, the inner lining pipe and the outer lining pipe form an inner pipe for supporting the pipeline, so that the combination of grouting and the inner lining pipe repairing method is realized, and the repairing effect of the sewage pipeline is improved.
The present invention in a preferred example may be further configured to: the fixed subassembly establishes the solid fixed ring on the slip casting pipe including the cover, be provided with a plurality of landing legs that are used for supporting solid fixed ring on solid fixed ring's the circumference lateral wall, the one end and the solid fixed ring fixed connection of landing leg, the other end of landing leg and the lateral wall interconnect of bushing pipe or interior bushing pipe.
Through adopting above-mentioned technical scheme, the setting of fixed subassembly can strengthen the fixed stability of slip casting pipe between bushing pipe and interior bushing pipe, reduces the possibility that slip casting pipe rocked in the slip casting process to promote the stability of slip casting.
The present invention in a preferred example may be further configured to: the landing leg deviates from the one end of solid fixed ring and is provided with the elastic plate, the cross-section of elastic plate is the arc setting, and one side of elastic plate bonds each other with the lateral wall of landing leg, and the other end of elastic plate bonds with the lateral wall of bushing pipe or interior bushing pipe.
Through adopting above-mentioned technical scheme, the setting up of elastic plate has increased its area of contact with bushing pipe or interior lining pipe to make landing leg and bushing pipe's connection more stable in bushing pipe or interior lining pipe, thereby promote the landing leg to solid fixed ring's fixed stability.
The present invention in a preferred example may be further configured to: the reinforced plastic lining pipe is characterized in that reinforcing cotton is arranged between the outer lining pipe and the inner lining pipe, the reinforcing cotton is glass fiber cotton, and a thermosetting resin layer is arranged between the reinforcing cotton and the outer lining pipe.
By adopting the technical scheme, the reinforced cotton is glass fiber cotton, the mechanical strength is high, and the compression resistance of the lining can be enhanced; meanwhile, after the thermosetting resin layer is thermally cured, the pressure resistance of the lining can be further improved.
The present invention in a preferred example may be further configured to: the thermosetting resin layer may be a polyester resin, an epoxy resin, or a vinyl resin.
By adopting the technical scheme, the polyester resin, the epoxy resin or the vinyl resin can be very conveniently and rapidly cured, and the cured resin has high hardness, good toughness, very strong impact resistance and bending resistance and very strong corrosion resistance.
The present invention in a preferred example may be further configured to: and a glass fiber fabric layer is arranged between the thermosetting resin layer and the reinforcing cotton.
Through adopting above-mentioned technical scheme, the glass fiber fabric layer has the even permeability of good resin, and the resin layer of being convenient for is at the adhesion on glass fiber fabric layer, can make thermosetting resin layer and glass fiber fabric layer have even thickness and inner structure, has further improved the intensity of inside lining.
The present invention in a preferred example may be further configured to: slip connection is between slip spray tube and the slip casting pipe, the tip of slip spray tube is provided with the slip ring between penetrating the slip casting pipe deeply, set up the groove that slides that supplies the slip ring to slide on the inside wall of slip casting pipe.
Through adopting above-mentioned technical scheme, let in the thick liquid to the slip casting intraductal, the slip casting spray tube removes towards the damaged department of pipeline under the promotion of thick liquid, and the ring that slides this moment slides along the length direction in groove that slides to with the better hole department of letting in the basis in the damaged pipeline outside of thick liquid, carry out the slip casting and pack
The present invention in a preferred example may be further configured to: the grouting spray pipe is characterized in that a slurry mixer is arranged inside the grouting spray pipe, the slurry mixer is composed of two spiral blades with opposite spiral directions, and the two spiral blades are coaxially arranged.
Through adopting above-mentioned technical scheme, thick liquid blender is two helical blade that spiral opposite direction, and thick liquid can produce mixed flow and cross mixing when here to make the more even that the thick liquid mixes, also make the thick liquid can produce great impact force to the slip casting spray tube simultaneously, thereby the slip casting spray tube of being convenient for removes towards the damaged department of pipeline.
The present invention in a preferred example may be further configured to: a pipeline grouting repairing method of a grouting structure for repairing a sewage pipeline is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
s1, surveying the known sewage water pipe on a surveying site, confirming the specific construction length and diameter, and determining the construction length and diameter as a construction section;
s2, pipeline water shutoff and water regulation: adopting special water plugging equipment or a high-power sewage pump to plug and transfer water to the upstream and downstream of the pipeline;
s3, dredging and cleaning the pipeline: pumping water and dredging the pipeline to be repaired by using a mud suction truck for pumping water, and dredging the pipeline to be repaired;
s4, television image pickup detection: placing television camera equipment into a pipeline to be repaired, detecting the interior of the pipeline, and acquiring the damaged position, quantity and damaged degree in the repaired pipeline;
s5, prefabricating a grouting structure, and selecting prefabricated outer liner pipes, inner liner pipes, grouting pipes and grouting spray pipes according to the size, damage position, number and damage degree of a pipeline to be grouted;
s6, dragging the pipeline lining into the pipeline: dragging the grouting structure into a pipeline to be repaired, enabling the length of the outer liner pipe to be larger than that of the pipeline, arranging a sealing water stop gasket between the pipeline and the end part of the outer liner pipe, and arranging a pressure discharge pipe on the sealing water stop gasket;
s7, pipe lining forming: the method comprises the following steps that two ends of a lining pipe are respectively plugged upstream and downstream by adopting a special pipe plug, a channel through which gas can pass is formed in the middle of the special pipe plug, water vapor is blown into the lining pipe at the upstream of a pipeline through an air compressor, and a valve and a temperature and pressure instrument are arranged in the special pipe plug at the downstream of the pipeline; controlling the temperature of the downstream not to exceed 95 ℃, and controlling the pressure to be less than 0.15 MPa, so that the water vapor in the lining pipe blows up the lining pipe, the lining pipe firstly recovers to be round before deformation during production, and then the extruded outer lining pipe of the lining pipe is tightly attached to the inner wall of the pipeline to be repaired;
s8, grouting and curing: the grouting pipe is filled with the grout through the grouting machine, and the grouting spray pipe moves towards the damaged position of the pipeline under the pushing of the grout, so that the grout is better filled into the cavity of the foundation on the outer side of the damaged pipeline to be grouted and filled;
s9, cooling and port treatment after molding: after the pipe is tightly attached to the inner wall of the pipeline to be repaired, under the condition of keeping the same pressure, cold air is input into the pipe through a channel of the special pipe plug to cool the pipe, the pressure can be released when a downstream temperature meter shows that the temperature of the through-flow gas is reduced to be below 30 ℃, and redundant pipes are cut off and the port is sealed;
s10, CCTV detection and acceptance: the detection content is the overall condition, the mellow condition and the smooth condition of the repaired pipeline, and measures should be taken in time to ensure the high quality of the repair project if a problem is found after the inspection of the project is finished, and the video data is recorded to provide a detection report;
s11, water return: and after the acceptance is qualified, removing the upstream and downstream plugs and recovering the water supply of the pipeline.
By adopting the technical scheme, the grouting and lining pipe repairing method is combined, gaps, holes and the like generated at the foundation of the pipeline are filled with the grouting, and meanwhile, the rock soil around the pipeline is compacted to a certain degree, so that the rock soil is cemented into a whole, the porosity is reduced, the strength of the rock mass is improved, the compressibility and water permeability are reduced, and uneven settlement is prevented. But also can repair the cracks generated by local fracture of the pipeline, leakage points of leakage, gaps generated by joint disjunction and the like, treats both the symptoms and root causes, is convenient and quick, can be well suitable for repairing the sewage pipeline, does not cause the damage of operations such as drilling and the like to the sewage pipeline, and reduces the operation cost and the period.
In summary, the invention has the following beneficial technical effects:
1. when a lining pipe is added in the pipeline to be repaired, soil bodies at the damaged part and the outer side of the pipeline are filled by grouting through the grouting pipe, and the grouting and the lining pipe repairing method are combined, so that the repairing effect of the sewage pipeline is improved;
2. the setting of fixed subassembly can strengthen the fixed stability of slip casting pipe between bushing pipe and interior bushing pipe, reduces the possibility that slip casting pipe rocked in the slip casting process to promote the stability of slip casting.
Drawings
Fig. 1 is a schematic view of the construction structure of the present invention.
Figure 2 is a cross-sectional view embodying a pipe lining structure.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 4 is a partially enlarged schematic view of a portion B in fig. 2.
FIG. 5 is a process flow diagram embodying the repair method of the present invention.
In the figure, 1, a pipeline lining; 11. an outer liner tube; 111. a grouting port; 12. a liner tube; 13. a thermosetting resin layer; 14. a glass fiber fabric layer; 15. reinforcing cotton; 2. grouting spray pipes; 21. a slurry mixer; 22. a slip ring; 3. a grouting pipe; 31. a sliding groove; 4. a fixing assembly; 41. a fixing ring; 42. a support leg; 43. an elastic plate; 5. a water plugging air bag; 6. a pipe plug; 61. a channel; 7. an air compressor; 8. and (4) grouting machine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a grouting structure for repairing a sewage pipe disclosed by the present invention comprises a pipe liner 1 for repairing a sewage pipe, wherein the pipe liner 1 comprises an outer liner pipe 11 for abutting against the inner side of the sewage pipe and an inner liner pipe 12 arranged inside the outer liner pipe 11; the outer liner tube 11 is made of high-density polyvinyl chloride with high elasticity, and the high-density polyvinyl chloride has better waterproof performance and corrosion resistance, so that the outer liner tube 11 is more suitable for the use environment of a sewage pipeline; the lining pipe 12 is a mixture of glycol polyester and novolac epoxy resin, and the mixture of glycol polyester and novolac epoxy resin has strong wear resistance and corrosion resistance, and improves the chemical corrosion resistance, wear resistance and water passing capacity of the lining pipe 12; a thermosetting resin layer 13, a glass fiber fabric layer 14 and reinforcing cotton 15 are sequentially arranged between the outer liner tube 11 and the inner liner tube 12 from outside to inside; the thermosetting resin layer 13 can be polyester resin, epoxy resin or vinyl resin, can be conveniently and rapidly cured, has high hardness and good toughness of a cured product, has strong impact resistance and bending resistance, and also has strong corrosion resistance; the glass fiber fabric layer 14 has good resin uniform permeability, so that the resin layer is conveniently attached to the glass fiber fabric layer 14, the thermosetting resin layer 13 and the glass fiber fabric layer 14 can have uniform thickness and internal structure, and the strength of the lining is further improved; the reinforced cotton 15 is glass fiber cotton which has high mechanical strength and can enhance the compression resistance of the lining; meanwhile, after the thermosetting resin layer 13 is thermally cured, the pressure resistance of the liner can be further improved.
Referring to fig. 4, a grouting opening 111 for grouting a to-be-repaired position of a sewage pipeline is formed in an outer liner pipe 11, grouting spray pipes 2 are arranged in the grouting opening 111, the grouting spray pipes 2 are arranged along the radial direction of the outer liner pipe 11, and workers can prefabricate the number and the positions of the grouting openings 111 according to the number of damaged sewage pipelines to be repaired; one end of the grouting spray pipe 2, which faces the lining pipe 12, is connected with a grouting pipe 3, a slurry mixer 21 is fixedly connected inside the grouting spray pipe 2, the slurry mixer 21 is provided with two helical blades with opposite helical directions, the two helical blades are coaxially arranged, and slurry can generate mixed flow and cross mixing when passing through the mixer, so that the slurry is mixed more uniformly; the grouting pipe 3 is positioned between the inner lining pipe 12 and the outer lining pipe 11, and the grouting pipe 3 is embedded between the reinforcing cotton and glass fiber fabric layer 14 and the resin layer; the conveying part of the grouting pipe 3 is arranged in parallel with the central axis of the outer liner pipe 11, the connecting part of the grouting pipe 3 and the grouting spray pipe 2 is arranged coaxially with the grouting spray pipe 2, the end part of the grouting spray pipe 2 extends into the end part of the grouting pipe 3 and horizontally extends outwards to form a slip ring 22, and the inner side wall of the grouting pipe 3 is provided with a slip groove 31 for the slip ring 22 to slip up and down; the grouting nozzle 2 moves towards the damaged position of the pipeline under the pushing of the grout, and the slip ring 22 slips along the length direction of the slip groove 31 at the moment, so that the grout is better introduced into the cavity of the foundation outside the damaged pipeline. When a worker repairs and grouts a sewage pipeline, the outer liner pipe 11 can be placed in the pipeline to be repaired, the grouting spray pipe 2 in the grouting opening 111 of the outer liner pipe 11 is placed at the damaged position of the pipeline to be repaired, then fixed grout is introduced into the grouting pipe 3, so that the fixed grout enters the damaged position of the pipeline to be repaired and the soil layer to be solidified and filled, soil bodies and pipelines outside the damaged position of the pipeline are reinforced, and the pipeline structure is prevented from being damaged; meanwhile, the inner lining pipe 12 and the outer lining pipe 11 form an inner pipe for supporting a pipeline, so that the grouting and the inner lining pipe 12 repairing method are combined, and the repairing effect of the sewage pipeline is improved.
Referring to fig. 2 and 3, in the present embodiment, five fixing assemblies 4 for protecting and fixing the grouting pipe 3 are further embedded between the inner liner pipe 12 and the outer liner pipe 11, and the five fixing assemblies 4 are all arranged along the length direction of the grouting pipe 3. The fixing component 4 comprises a fixing ring 41 sleeved on the grouting pipe 3, three support legs 42 for supporting the fixing ring 41 are arranged on the circumferential side wall of the fixing ring 41, the support legs 42 have certain elasticity and can generate certain deformation according to the distance between the outer liner pipe 11 and the inner liner pipe 12, one ends of the support legs 42 are fixedly connected with the fixing ring 41, and the other ends of the support legs 42 are mutually connected with the side wall of the outer liner pipe 11 or the inner liner pipe 12 through elastic plates 43; the cross-section of elastic plate 43 is the arc setting, and the arcwall face of elastic plate 43 and the lateral wall radian looks adaptation of interior bushing pipe 12 of outer liner pipe 11, one side of elastic plate 43 bonds each other with the lateral wall of landing leg 42, the other end of elastic plate 43 bonds with the lateral wall of interior bushing pipe 12 of outer liner pipe 11, elastic plate 43 has increased its area of contact with interior bushing pipe 12 of outer liner pipe 11, so that landing leg 42 and outer liner pipe 11 or the connection of interior bushing pipe 12 are more stable, thereby promote landing leg 42 to the fixed stability of solid fixed ring 41.
Referring to fig. 1 and 5, a method for repairing a sewer pipe by grouting a grouting structure for repairing a sewer pipe includes the following steps:
s1, surveying the known sewage water pipe on a surveying site, confirming the specific construction length and diameter, and determining the construction length and diameter as a construction section;
s2, pipeline water shutoff and water regulation: adopting special water plugging equipment such as a water plugging air bag 5 or a high-power sewage pump to plug and transfer water to the upstream and downstream of the pipeline;
s3, dredging and cleaning the pipeline: pumping water and dredging the pipeline to be repaired by using a suction dredge to pump water and desilt the pipeline to be repaired;
s4, television image pickup detection: placing the television camera equipment into a pipeline to be repaired, detecting the interior of the pipeline, and acquiring the position, the quantity and the damage degree of the damage in the repaired pipeline;
s5, prefabricating a grouting structure, and selecting prefabricated outer liner pipes 11, inner liner pipes 12, grouting pipes 3 and grouting spray pipes 2 according to the size, damage position, number and damage degree of the pipeline 3 to be grouted;
s6, pulling the pipe liner 1 into the pipe: dragging the grouting structure into a pipeline to be repaired, enabling the length of the outer liner tube 11 to be larger than that of the pipeline, arranging a sealing water stop gasket between the pipeline and the end part gap of the outer liner tube 11, and arranging a pressure discharge tube on the sealing water stop gasket to release grouting pressure between the pipeline to be repaired and the pipeline liner 1;
s7, forming the pipe lining 1: the two ends of the lining pipe 12 are respectively plugged upstream and downstream by adopting a special pipe plug 6, a channel 61 through which gas can pass is arranged in the middle of the special pipe plug 6, water vapor is blown into the lining pipe 12 through an air compressor 7 at the upstream of a pipeline, and a valve, a temperature instrument and a pressure instrument are arranged in the special pipe plug 6 at the downstream of the pipeline; controlling the temperature at the downstream not to exceed 95 ℃ and the pressure to be less than 0.15 MPa, so that the water vapor in the inner lining pipe 12 blows up the inner lining pipe 12, the inner lining pipe 12 firstly recovers to the round shape before deformation in production, and then the outer lining pipe 11 is tightly attached to the inner wall of the pipeline to be repaired under the extrusion of the inner lining pipe 12;
s8, grouting and curing: the grouting pipe 3 is filled with the grout through the grouting machine 8, and the grouting spray pipe 2 moves towards the damaged position of the pipeline under the pushing of the grout, so that the grout is better filled into the cavity of the foundation on the outer side of the damaged pipeline to be grouted and filled;
s9, cooling and port treatment after molding: after the pipe is tightly attached to the inner wall of the pipeline to be repaired, under the condition of keeping the same pressure, cold air is input into the pipe through a channel 61 of the special pipe plug 6 to cool the pipe, the pressure can be released when the downstream temperature meter shows that the temperature of the through-flow gas is reduced to be below 30 ℃, and the redundant pipe is cut off and the port is sealed;
s10, CCTV detection and acceptance: the detection content is the overall condition, the mellow condition and the smooth condition of the repaired pipeline, and measures should be taken in time to ensure the high quality of the repair project if a problem is found after the inspection of the project is finished, and the video data is recorded to provide a detection report;
s11, water return: and after the acceptance is qualified, removing the upstream and downstream plugs and recovering the water supply of the pipeline.
The implementation principle of the embodiment is as follows: when a worker repairs and grouts a sewage pipeline, the outer liner pipe 11 can be placed in the pipeline to be repaired, the grouting spray pipe 2 in the grouting opening 111 of the outer liner pipe 11 is placed at the damaged position of the pipeline to be repaired, then fixed grout is introduced into the grouting pipe 3, so that the fixed grout enters the damaged position of the pipeline to be repaired and the soil layer to be solidified and filled, soil bodies and pipelines outside the damaged position of the pipeline are reinforced, and the pipeline structure is prevented from being damaged; simultaneously, the inner lining pipe 12 and the outer lining pipe 11 form an inner pipe for supporting the pipeline, grouting and the inner lining pipe 12 repairing method are combined, gaps, holes and the like generated at the pipeline foundation are filled with grouting, and meanwhile, certain compaction effect is also exerted on rock soil around the pipeline, so that the rock soil is cemented into a whole, thereby reducing the porosity, improving the strength of the rock mass, reducing the compressibility and water permeability and preventing uneven settlement. But also can repair the cracks generated by local fracture of the pipeline, leakage points of leakage, gaps generated by joint disjunction and the like, treats both the symptoms and root causes, is convenient and quick, can be well suitable for repairing the sewage pipeline, does not cause the damage of operations such as drilling and the like to the sewage pipeline, and reduces the operation cost and the period.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. A sewer pipe rehabilitation grouting structure, includes pipeline inside lining (1) that is used for restoreing the sewer pipe, and pipeline inside lining (1) includes and is used for clinging to outside lining pipe (11) of sewer pipe inboard and sets up inside interior lining pipe (12) at outside lining pipe (11), its characterized in that: the device comprises an outer liner pipe (11) and an inner liner pipe (12), wherein a grouting opening (111) used for grouting a to-be-repaired position of a sewage pipeline is formed in the outer liner pipe (11), a grouting spray pipe (2) is arranged in the grouting opening (111), one end of the grouting spray pipe (2) is connected with a grouting pipe (3), the grouting pipe (3) is positioned between the inner liner pipe (12) and the outer liner pipe (11), and a plurality of fixing assemblies (4) used for protecting and fixing the grouting pipe (3) are arranged between the inner liner pipe (12) and the outer liner pipe (11); the grouting spray pipe (2) is connected with the grouting pipe (3) in a sliding manner, a sliding ring (22) is arranged between the end part of the grouting spray pipe (2) extending into the grouting pipe (3), and a sliding groove (31) for the sliding ring (22) to slide is formed in the inner side wall of the grouting pipe (3); a slurry mixer (21) is arranged in the grouting spray pipe (2), the slurry mixer (21) is composed of two helical blades with opposite helical directions, and the two helical blades are coaxially arranged; the fixing assembly (4) comprises a fixing ring (41) sleeved on the grouting pipe (3), a plurality of supporting legs (42) used for supporting the fixing ring (41) are arranged on the circumferential side wall of the fixing ring (41), one ends of the supporting legs (42) are fixedly connected with the fixing ring (41), and the other ends of the supporting legs (42) are mutually connected with the side wall of the outer liner pipe (11) or the inner liner pipe (12); the supporting leg (42) deviates from one end of the fixing ring (41) and is provided with an elastic plate (43), the section of the elastic plate (43) is arranged in an arc shape, one side of the elastic plate (43) is bonded with the side wall of the supporting leg (42), and the other end of the elastic plate (43) is bonded with the side wall of the outer liner tube (11) or the inner liner tube (12).
2. The grouting structure for sewer restoration of claim 1, wherein: reinforcing cotton (15) is arranged between the outer liner pipe (11) and the inner liner pipe (12), the reinforcing cotton (15) is glass fiber cotton, and a thermosetting resin layer (13) is arranged between the reinforcing cotton (15) and the outer liner pipe (11).
3. The grouting structure for sewer restoration of claim 2, wherein: the thermosetting resin layer (13) is polyester resin, epoxy resin or vinyl resin.
4. The grouting structure for sewer restoration of claim 2, wherein: and a glass fiber fabric layer (14) is arranged between the thermosetting resin layer (13) and the reinforcing cotton.
5. The pipeline grouting repairing method using the grouting structure for repairing the sewage pipeline as claimed in any one of claims 1 to 4, characterized in that: comprises the following steps of (a) carrying out,
s1, surveying the known sewage water pipe on a surveying site, confirming the specific construction length and diameter, and determining the construction length and diameter as a construction section;
s2, pipeline water shutoff and water regulation: adopting special water plugging equipment or a high-power sewage pump to plug and transfer water to the upstream and downstream of the pipeline;
s3, dredging and cleaning the pipeline: pumping water and dredging the pipeline to be repaired by using a suction dredge to pump water and desilt the pipeline to be repaired;
s4, television image pickup detection: placing the television camera equipment into a pipeline to be repaired, detecting the interior of the pipeline to be repaired, and acquiring the damaged position, quantity and damaged degree in the pipeline to be repaired;
s5, prefabricating a grouting structure, and selecting prefabricated outer liner pipes (11), inner liner pipes (12), grouting pipes (3) and grouting spray pipes (2) according to the size, damaged positions, quantity and damaged degree of the pipeline to be repaired;
s6, dragging the pipeline lining (1) into a pipeline: dragging the grouting structure into a pipeline to be repaired, enabling the length of the outer liner pipe (11) to be larger than that of the pipeline, arranging a sealing water stop pad between the pipeline and the end part gap of the outer liner pipe (11), and arranging a pressure discharge pipe on the sealing water stop pad;
s7, forming the pipe lining (1): the two ends of the lining pipe (12) are respectively plugged upstream and downstream by adopting a special pipe plug (6), a channel (61) through which gas can pass is formed in the middle of the special pipe plug (6), water vapor is blown into the lining pipe (12) through an air compressor (7) at the upstream of the pipeline, and a valve, a temperature instrument and a pressure instrument are arranged in the special pipe plug (6) at the downstream of the pipeline; controlling the temperature of the downstream not to exceed 95 ℃, and controlling the pressure to be less than 0.15 MPa, so that the water vapor in the inner lining pipe (12) blows up the inner lining pipe (12), the inner lining pipe (12) firstly recovers to be round before deformation in production, and then the outer lining pipe (11) is tightly attached to the inner wall of the pipeline to be repaired under the extrusion of the inner lining pipe (12);
s8, grouting and curing: grout is introduced into the grouting pipe (3) through the grouting machine (8), and the grouting spray pipe (2) moves towards the damaged position of the pipeline under the pushing of the grout, so that the grout is better introduced into the cavity of the foundation on the outer side of the damaged pipeline to be grouted and filled;
s9, cooling and port treatment after molding: after the pipe is tightly attached to the inner wall of the pipeline to be repaired, under the condition of keeping the same pressure, cold air is input into the pipe through a channel (61) of a special pipe plug (6) to cool the pipe, the pressure can be released when the downstream temperature meter shows that the temperature of the through-flow gas is reduced to be lower than 30 ℃, and the redundant pipe is cut off and the port is sealed;
s10, CCTV detection and acceptance: the detection content is the overall condition, the mellow condition and the smooth condition of the repaired pipeline, and measures should be taken in time to ensure the high quality of the repair project if a problem is found after the inspection of the project is finished, and the video data is recorded to provide a detection report;
s11, water return: and after the acceptance is qualified, removing the upstream and downstream plugs and recovering the water supply of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010311794.9A CN111456196B (en) | 2020-04-20 | 2020-04-20 | Grouting structure for repairing sewage pipeline and pipeline grouting repairing method |
Applications Claiming Priority (1)
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| CN112196057B (en) * | 2020-09-18 | 2021-10-12 | 长江生态环保集团有限公司 | In-pipe grouting device and grouting method |
| CN112377716B (en) * | 2020-09-24 | 2022-05-20 | 宁波市鄞州世纪耀达市政建设有限公司 | Pipeline non-excavation repairing method and device |
| CN112746661B (en) * | 2020-12-30 | 2022-07-15 | 北京城市排水集团有限责任公司 | Small-sized drainage square ditch steel wire framework composite reinforcement and repair system and construction method thereof |
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| CN113819335A (en) * | 2021-08-26 | 2021-12-21 | 中山大学 | Pipeline repairing device and pipeline repairing method |
| CN114382153B (en) * | 2022-01-25 | 2023-12-08 | 中建鹭港建设有限公司 | Drainage pipe steel lining local repair structure |
| CN114738599A (en) * | 2022-04-21 | 2022-07-12 | 浙江远望土地勘测规划设计有限公司 | Method and equipment for detecting and immediately repairing underground pipeline |
| CN114855983A (en) * | 2022-04-22 | 2022-08-05 | 长江生态环保集团有限公司 | Auxiliary tool for repairing gushing water at bottom of inspection well and implementation method |
| CN114992422B (en) * | 2022-07-07 | 2024-05-10 | 苏祥管道科技江苏有限公司 | Ultraviolet curing lining repairing device and construction method thereof |
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