CN116428446A - Non-excavation reinforcement anti-seepage repair method for underground pipeline - Google Patents
Non-excavation reinforcement anti-seepage repair method for underground pipeline Download PDFInfo
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- CN116428446A CN116428446A CN202310445201.1A CN202310445201A CN116428446A CN 116428446 A CN116428446 A CN 116428446A CN 202310445201 A CN202310445201 A CN 202310445201A CN 116428446 A CN116428446 A CN 116428446A
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- seepage
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- 230000008439 repair process Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000002787 reinforcement Effects 0.000 title claims abstract description 19
- 238000009412 basement excavation Methods 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 21
- 201000010099 disease Diseases 0.000 claims abstract description 20
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims abstract description 20
- 238000007596 consolidation process Methods 0.000 claims abstract description 9
- 230000007547 defect Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 5
- 239000012466 permeate Substances 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011398 Portland cement Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 5
- 230000000994 depressogenic effect Effects 0.000 claims 1
- 239000011440 grout Substances 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a non-excavation reinforcement anti-seepage repair method for an underground pipeline, which comprises the following steps of: a. determining a pipeline disease position, correspondingly placing an air bag and inflating and plugging the pipeline disease position; b. forming a repairing grouting hole which enters a road bed and is positioned right above a pipeline disease part on a road; c. a plurality of reinforcing grouting holes are formed in two sides of the pipeline, and extend into a foundation below the pipeline; d. repairing grouting holes for grouting, repairing the hollow sinking diseases of the reinforced road subgrade and the damaged parts of the pipeline, and forming an anti-seepage consolidation body at the periphery of the pipeline; e. grouting through the reinforced grouting holes, and reinforcing the roadbed and the bottom area of the pipeline; f. and (5) detecting. Through the mode, the underground pipeline non-excavation reinforcement seepage-proofing repairing method disclosed by the invention has the advantages that the pipeline bearing foundation and the diseases on the road are subjected to pipeline damage repairing at the same time, the influence of the road diseases on the service condition of the pipeline is avoided, and the service life of the pipeline is effectively prolonged.
Description
Technical Field
The invention relates to the field of pipeline repair, in particular to a non-excavation reinforcement anti-seepage repair method for an underground pipeline.
Background
Urban drainage pipe networks are important infrastructure for urban water pollution control and urban drainage and flood control. The service life of the drainage pipeline is usually 30 to 50 years, and after the service life of the drainage pipeline reaches the service life, a new pipeline is often required to be repaired or newly laid, and the construction period of re-excavating a tunnel and laying a pipe network is long and high in cost. Because of the road use reasons, defects can be formed in the road, and meanwhile, the defects can cause the conditions of dislocation, breakage, cracks, leakage and the like of the pipeline.
The existing pipeline repairing method generally adopts non-excavation type repairing. The conventional method of non-excavation repair is to fill an air bag in the pipeline, and fill and repair the defect part of the pipeline by a conventional grouting mode. The repairing method can only repair the pipeline, is not helpful to road defects, and the pipeline can still be damaged due to the road defects at the later stage.
Disclosure of Invention
The invention mainly solves the technical problem of providing the non-excavation reinforcement seepage-proofing repair method for the underground pipeline, which is used for repairing the damaged part of the pipeline and simultaneously carrying the damage on the foundation and the road, avoiding the influence of the road damage on the service condition of the pipeline and effectively prolonging the service life of the pipeline.
In order to solve the technical problems, the invention adopts a technical scheme that: the non-excavation reinforcement anti-seepage repair method for the underground pipeline comprises the following steps of: a. determining a disease part of the pipeline, placing a blocking air bag on the inner side of the disease part, pressing and expanding the air bag to cling to the interior of the pipeline, and blocking the disease part from the inner side of the pipeline; b. a repairing grouting hole is formed in a road, and a grouting pipe enters a road bed and is positioned right above a pipeline disease part; c. in the direction of the pipeline on the road, a plurality of reinforcing grouting holes are formed in two sides of the pipeline, and the reinforcing grouting holes extend into a road bed below the pipeline; d. filling grouting liquid after the grouting pipe is inserted into the repairing grouting hole, and penetrating the grouting liquid into the roadbed, the pipeline defect part and the peripheral area of the roadbed, reinforcing the hollow sinking defect of the roadbed and repairing the pipeline defect part, and simultaneously forming an anti-seepage consolidation body at the periphery of the pipeline, wherein the anti-seepage consolidation body prevents water in the pipeline from leaking outwards, and roadbed soil and water outside the pipeline from leaking into the pipeline to cause road collapse and other defects; e. filling grouting liquid after the grouting pipe is inserted into the reinforced grouting holes while grouting in the step d, wherein the grouting liquid permeates the lower parts of the roadbed and the pipeline, and the roadbed and the bottom area of the pipeline are reinforced; f. after grouting is finished for a period of time, detecting and accepting through a pipeline robot, and performing repair spraying on the unqualified grouting part, thereby completing pipeline repair.
In a preferred embodiment of the present invention, the repair grouting holes and the reinforcement grouting holes are both formed perpendicular to the road surface.
In a preferred embodiment of the present invention, the repair grouting holes pass through the sinking defect site of the road bed and have a space from the pipe defect site.
In a preferred embodiment of the invention, a pipeline cushion layer is arranged between the lower part of the pipeline and the roadbed, the reinforced grouting holes enter the roadbed, and the roadbed is repaired by grouting so as to carry out reinforced support on the pipeline cushion layer.
In a preferred embodiment of the invention, the transverse distance between the reinforcing grouting holes is 900-1100mm, the longitudinal distance between the reinforcing grouting holes and the outer wall of the pipeline is 400-600mm, and the lowest end of the reinforcing grouting holes is 20cm below the pipeline.
In a preferred embodiment of the invention, the grouting liquid is cement-water glass slurry, the cement adopts 42.5-grade ordinary Portland cement, the water glass has a modulus of 3.0 and a concentration of 36 DEG Be', the cement slurry is prepared according to design requirements and controlled to have a water cement ratio of 0.40-0.5:1, the ratio of the cement to the water glass is adjusted according to the field condition, and the mixing ratio is generally 1:0.8-1, and the coagulation time is controlled to be 30-45 s.
In a preferred embodiment of the present invention, the grouting pressure in the range of 0.3-0.5m above and below the pipeline is about 0.2MPa in the steps d and e by adopting a bottom-up upward grouting method.
The beneficial effects of the invention are as follows: according to the non-excavation reinforcing anti-seepage repairing method for the underground pipeline, the air bag is arranged in the pipeline to seal the disease position, grouting liquid is placed to extend into the pipeline during grouting, grouting holes are repaired and used for grouting, the disease position of the pipeline is repaired and reinforced by the grouting liquid, meanwhile, anti-seepage concretes are formed on the periphery of the pipeline by the grouting liquid, the pipeline and surrounding soil concretes are stressed together, the compactness is good, the bonding strength is high, the integrity and the water stability are good, the use function and the safety performance of the road and the underground pipeline are ensured, and the design requirement of comprehensive road repairing is met. Repairing the void sinking diseases of the road subgrade, and playing a role in repairing and reinforcing the road.
The non-excavation reinforcement anti-seepage repair method for the underground pipeline, disclosed by the invention, has the advantages that the roadbed below the reinforcement grouting Kong Duiguan road is synchronously repaired, the roadbed and the soil body below the roadbed can be stressed cooperatively, and the integrity and stability of the road structure and the roadbed are ensured
The non-excavation reinforcing seepage-proofing repairing method for the underground pipeline adopts the materials with high fluidity, good pourability and strong stability to be injected into the soil around the pipeline and below the roadbed in a pressure mode in a penetrating, filling and compaction mode, so that moisture and air are removed, gaps are filled, the porosity of the soil is reduced, the compactness of the soil is improved, and the bearing capacity and the deformation resistance of the soil are improved.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a longitudinal cross-sectional view of the method for trenchless reinforced barrier repair of an underground pipeline of the present invention;
FIG. 2 is a transverse cross-sectional view of the method for trenchless reinforced barrier repair of an underground pipeline of the present invention;
FIG. 3 is a schematic plan layout view of the method for non-excavation reinforcement, seepage prevention and repair of an underground pipeline according to the present invention;
the components in the drawings are marked as follows: 1. the air bags are plugged, 2, the pipelines, 3, repair grouting holes, 4, reinforcement grouting holes, 5, road foundations, 6, road beds, 7 and pipeline cushion layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective. Also, the terms "upper", "lower", "left", "right", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for modification or adjustment of the relative relationships thereof, as they are also considered within the scope of the invention without substantial modification to the technical context.
Referring to fig. 1 to 3, a non-excavation reinforcement anti-seepage repair method for an underground pipeline comprises the following steps:
a. determining a disease part of a pipeline, placing a blocking air bag 1 on the inner side of the disease part, pressing and expanding the air bag to cling to the inside of the pipeline 2, blocking the disease part from the inner side of the pipeline 2, pressing the inside of the blocking air bag 1 to reset the pipeline 2, and simultaneously, taking the blocking air bag 1 as a reinforcing inner layer extruded by external grouting to prevent grouting liquid from entering the inside of the pipeline 2 during grouting;
b. a repairing grouting hole 3 is formed in a road according to a conventional drilling process, the repairing grouting hole 3 is formed perpendicular to the road surface, a grouting pipe enters the road bed 5 and is positioned right above a pipeline damage position, the grouting hole is formed according to the pipeline damage position, and the repairing grouting hole 3 passes through a sinking damage position of the road bed 5 and is spaced from the pipeline damage position;
c. in the direction of a pipeline 2 on a road, a plurality of reinforcing grouting holes 4 are formed on two sides of the pipeline 2 according to a conventional drilling process, the reinforcing grouting holes 4 are formed perpendicular to the road surface, a pipeline cushion layer 7 is arranged between the lower part of the pipeline 2 and a road bed 6, the reinforcing grouting holes 4 extend into the road bed 6 positioned below the pipeline 2, the bottommost end of each grouting hole is 20cm below the pipeline 2, the distance between the reinforcing grouting holes 4 is preferably 0.8-1.7 times of the slurry diffusion radius, the slurry diffusion radius is usually 0.5-1.0 m according to practical engineering experience, and preferably, the transverse distance between the reinforcing grouting holes 4 is 1000mm, and the longitudinal distance between the reinforcing grouting holes 4 and the outer wall of the pipeline 2 is 500mm;
d. the grouting pipe is inserted into the repairing grouting hole 3, grouting liquid is filled in the grouting hole, the grouting liquid permeates into the road subgrade 5, the pipeline defect part and the peripheral area thereof, the road subgrade is reinforced to remove hollow sinking defects and repair the pipeline defect part, meanwhile, an anti-seepage consolidation body is formed on the periphery of the pipeline, and the anti-seepage consolidation body prevents water in the pipeline from leaking outwards, and road foundation soil and water outside the pipeline permeate into the pipeline to cause road collapse and other defects;
e. filling grouting liquid after the grouting pipe is inserted into the reinforced grouting holes 4 while grouting in the step d, wherein the grouting liquid permeates the roadbed 6 and the lower part of the pipeline 2, and reinforces the roadbed 6 and the bottom area of the pipeline 2;
the grouting liquid in the steps d and e is cement-water glass slurry, the cement adopts 42.5-grade ordinary silicate cement, the water glass has a modulus of 3.0 and a concentration of 36 DEG Be', the cement slurry is prepared according to the design requirement, the cement-water glass ratio is controlled to Be 0.40-0.5:1, the cement-water glass ratio is adjusted according to the field condition, and the mixing ratio is generally 1:0.8-1, and the coagulation time is controlled to be 30-45 s. The grouting pressure of the pipeline is about 0.2MPa in the range of 0.3-0.5m from bottom to top.
The cement-water glass slurry with high fluidity, good filling property and strong stability is injected into the soil body around the pipeline and below the roadbed 6 in a pressure mode of infiltration, filling and compaction, moisture and air are removed, gaps are filled, the porosity of the soil body is reduced, the compactness of the soil body is improved, the bearing capacity and deformation resistance of the soil body are improved, the pipeline and the surrounding soil body bear load and deformation jointly, and meanwhile, the roadbed 6 and the soil body below the pipeline can bear stress cooperatively, so that the integrity and stability of a road structure and a roadbed are ensured. Simultaneously, grouting is carried out on the periphery of the damaged underground pipeline to form a novel waterproof curtain seepage-proofing consolidation body with high compactness and good seepage-proofing property, thereby solving the problem of water leakage of the pipeline. Through the reinforcement grouting and the anti-seepage grouting of the pipeline and the surrounding soil, the pipeline and the surrounding soil consolidation body are stressed together, so that the compactness is good, the bonding strength is high, the integrity and the water stability are good, the use functions and the safety performance of the road and the underground pipeline are ensured, and the design requirement of comprehensive road remediation is met.
f. After grouting is finished for a period of time, the plugging air bag 1 is taken out, detection and acceptance are carried out through a pipeline robot, and repair spraying is carried out on the unqualified grouting part, so that pipeline repair is completed.
Compared with the prior art, the non-excavation reinforcement anti-seepage repair method for the underground pipeline is characterized in that the damage to the pipeline bearing foundation and the damage to the road are avoided while the damage part of the pipeline is repaired, the influence of the road damage to the service condition of the pipeline is avoided, and the service life of the pipeline is effectively prolonged.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (7)
1. The non-excavation reinforcement anti-seepage repair method for the underground pipeline is characterized by comprising the following steps of:
a. determining a disease part of the pipeline, placing a blocking air bag on the inner side of the disease part, pressing and expanding the air bag to cling to the interior of the pipeline, and blocking the disease part from the inner side of the pipeline;
b. a repairing grouting hole is formed in a road, and a grouting pipe enters a road bed and is positioned right above a pipeline disease part;
c. in the direction of a pipeline on a road, a plurality of reinforcing grouting holes are formed in two sides of the pipeline, and the reinforcing grouting holes extend into a foundation below the pipeline;
d. filling grouting liquid after the grouting pipe is inserted into the repairing grouting hole, and penetrating the grouting liquid into the roadbed, the pipeline defect part and the peripheral area of the roadbed, reinforcing the hollow sinking defect of the roadbed and repairing the pipeline defect part, and simultaneously forming an anti-seepage consolidation body at the periphery of the pipeline, wherein the anti-seepage consolidation body prevents water in the pipeline from leaking outwards, and roadbed soil and water outside the pipeline from leaking into the pipeline to cause road collapse and other defects;
e. filling grouting liquid after the grouting pipe is inserted into the reinforced grouting holes while grouting in the step d, wherein the grouting liquid permeates the lower parts of the roadbed and the pipeline, and the roadbed and the bottom area of the pipeline are reinforced;
f. and after grouting is finished for a period of time, taking out the blocking air bag, detecting and accepting through a pipeline robot, and performing repair spraying on the unqualified grouting part, thereby completing pipeline repair.
2. The underground pipeline trenchless reinforced anti-seepage repair compound of claim 1, wherein the repair grouting holes and the reinforcement grouting holes are all formed perpendicular to the road surface.
3. The underground pipeline trenchless reinforced barrier repair of claim 2, wherein the repair grout holes pass through the depressed defect site of the road bed with a space from the pipeline defect site.
4. The underground pipeline trenchless reinforced anti-seepage repair compound of claim 2, wherein a pipeline cushion layer is arranged between the lower part of the pipeline and the roadbed, the reinforced grouting holes enter the roadbed, and the roadbed is repaired by grouting so as to carry out reinforced support on the pipeline cushion layer.
5. The underground pipeline trenchless reinforced anti-seepage repair compound of claim 3, wherein the transverse distance between the reinforced grouting holes is 900-1100mm, the longitudinal distance between the reinforced grouting holes and the outer wall of the pipeline is 400-600mm, and the lowest end of the reinforced grouting holes is 100cm below the pipeline.
6. The non-excavation reinforcement and seepage prevention repair compound of an underground pipeline according to any one of claims 1 to 5, wherein the grouting liquid is cement-water glass slurry, 42.5-grade ordinary Portland cement is adopted as the cement, the water glass has a modulus of 3.0 and a concentration of 36 DEG Be', the cement slurry is prepared according to design requirements and controlled to Be water cement ratio of 0.40-0.5:1, the cement and water glass ratio is adjusted according to the field condition, and the mixing ratio is generally 1:0.8-1, and the coagulation time is controlled to be 30-45 s.
7. The non-excavation reinforcement and anti-seepage repair compound for the underground pipeline according to claim 6, wherein in the steps d and e, a bottom-up upward grouting method is adopted, and grouting pressures in the range of 0.3-0.5m above and below the pipeline are about 0.2MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310445201.1A CN116428446A (en) | 2023-04-24 | 2023-04-24 | Non-excavation reinforcement anti-seepage repair method for underground pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310445201.1A CN116428446A (en) | 2023-04-24 | 2023-04-24 | Non-excavation reinforcement anti-seepage repair method for underground pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN116428446A true CN116428446A (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310445201.1A Pending CN116428446A (en) | 2023-04-24 | 2023-04-24 | Non-excavation reinforcement anti-seepage repair method for underground pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116428446A (en) |
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2023
- 2023-04-24 CN CN202310445201.1A patent/CN116428446A/en active Pending
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