CN110388531B - Reinforcing structure and reinforcing method for pipeline - Google Patents
Reinforcing structure and reinforcing method for pipeline Download PDFInfo
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- CN110388531B CN110388531B CN201910732656.5A CN201910732656A CN110388531B CN 110388531 B CN110388531 B CN 110388531B CN 201910732656 A CN201910732656 A CN 201910732656A CN 110388531 B CN110388531 B CN 110388531B
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- grouting
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- outer sleeve
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000010865 sewage Substances 0.000 claims abstract description 51
- 238000012423 maintenance Methods 0.000 claims abstract description 27
- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000000741 silica gel Substances 0.000 claims description 32
- 229910002027 silica gel Inorganic materials 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 29
- 239000002002 slurry Substances 0.000 claims description 26
- 210000001503 joint Anatomy 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 21
- 239000010935 stainless steel Substances 0.000 claims description 21
- 238000005498 polishing Methods 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000005056 compaction Methods 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- 230000007797 corrosion Effects 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000013081 microcrystal Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention relates to the technical field of pipeline maintenance, in particular to a reinforcing and reinforcing structure of a pipeline and a reinforcing method thereof. The invention also comprises an inner liner tube reinforcement method and an outer sleeve reinforcement method, and the invention has simple structure, can rapidly perform seepage-proofing reinforcement reconstruction treatment on the sewage pipeline damaged by the sewage valve well, has rapid and comprehensive reconstruction construction method, and is suitable for popularization.
Description
Technical Field
The invention relates to the technical field of pipeline maintenance, in particular to a reinforcing structure and a reinforcing method of a pipeline.
Background
In 2013-2016 city water supply engineering, it is found that water leakage is caused by corrosion and water leakage of the pipe wall of the drain pipe along the box culvert drain valve pipe, and in consideration of the fact that other drain pipes along the line are contemporaneous products and the same problems of corrosion damage and water leakage may exist, in order to ensure the operation safety of the water supply engineering, according to the requirements of the outline scheme of water supply engineering water shut-down maintenance work in the last years and combining the detection condition and past year treatment experience of the box culvert along the water shut-down maintenance period in the last years, the reinforcement and reinforcement treatment of the box culvert drain valve well and the drain pipe are planned to be carried out, wherein the conditions of lining reinforcement treatment, outsourcing reinforcement treatment and internal and external synchronous reinforcement treatment are involved, the overall replacement cost is high, the construction period is long, the efficiency and quality of the construction engineering are improved, the construction cost is reduced, and the maintenance period is shortened.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, the maintenance of a blow-off pipe of a box culvert blow-off well involves inner lining reinforcement treatment, outer wrapping reinforcement treatment and inner and outer synchronous reinforcement treatment, but the whole replacement cost is high and the construction period is long.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a reinforcement reinforced structure of pipeline, includes lining pipe and outer tube, lining pipe and outer tube set up respectively in blow off pipeline's inboard and outside, the pipe wall outside equidistance of lining pipe is equallyd divide fixedly and is equipped with a plurality of stainless steel bars, the head end fixing of lining pipe is equipped with the first fixed steel sheet of two symmetry settings, two through the fixed semi-ring type silica gel elastic seal circle that is equipped with two bilateral symmetry between the first fixed steel sheet through the cementing, two between the relative top of silica gel elastic seal circle and bottom all be equipped with the head grouting hole, the fixed steel sheet that is equipped with of lining pipe afterbody, one side of the fixed steel sheet of second is equipped with two bilateral symmetry's semi-ring type silica gel strips through the cementing, two the equal distance between the relative top and the bottom of silica gel strip all is equipped with afterbody grouting hole, the outer tube is two semi-ring type jigs involution detachable connection formation, equally divide fixedly on the outer tube's the outer wall and be equipped with a plurality of strengthening ribs, the top symmetry of outer tube is equipped with mechanical high pressure grouting hole and manual grouting hole.
Preferably, the lining pipe is of a stainless steel pipe structure with the outer diameter of 380mm, the thickness of 2mm and the length of 2500mm, the width of the stainless steel strips is 100mm, the thickness of the stainless steel strips is 2mm, the distance between every two adjacent stainless steel strips is 550mm, the distance between the ports of the stainless steel strips at two ends of the lining pipe is 100mm, and the stainless steel strips are tightly attached to the outer wall of the lining pipe and are welded and fixed in a seamless mode in the axis direction of the vertical lining pipe.
Preferably, the width of the silica gel elastic sealing ring is 30mm, the minimum compression thickness is 10mm, and the gap width of the head grouting hole is 20mm.
Preferably, the silica gel strip is arranged at a position 100mm away from the tail end face of the lining pipe, the width of the silica gel strip is 30mm, the minimum compression thickness is 10mm, and the gap width of the tail grouting hole is 10mm.
Preferably, the outer sleeve is a semicircular jig structure with the outer diameter of 460mm and the thickness of 1.5mm, the width of the reinforcing ribs is 12mm, the thickness of the reinforcing ribs is 2mm, the diameter of the mechanical high-pressure pouring hole is 14mm, the pouring diameter of the slurry manual pouring hole is 50mm, the sealing diameter of the slurry manual pouring hole is 14mm, two side sides of the outer sleeve are fixedly provided with butt joint edges, two butt joint PVC sealing strips are clamped between the butt joint edges, a plurality of penetrating bolt holes are formed in the butt joint edges and the PVC sealing strips, and the two outer sleeves are detachably connected through the butt joint edges and the locking bolts.
Preferably, the parts of the two ends of the outer sleeve, which are contacted with the concrete wall, are subjected to rigid compaction and reinforcement treatment by using the nano microcrystalline rapid plugging agent, and an inclined angle structure with R=100 is formed at the joint part.
The reinforcing method for the pipeline comprises a lining pipe reinforcing method and an outer sleeve reinforcing method, and specifically comprises the following steps:
1) The reinforcing and reinforcing method of the lining pipe comprises the following steps:
s1, ventilation and illumination of working face and working face
And generating power by using a 30KW diesel engine on site, and carrying out working face illumination and power setting.
S2, setting a water retaining cofferdam and cleaning a working face:
and (3) building water retaining cofferdams on two sides of a box culvert bottom plate near the working surface, wherein the width of the working surface of the cofferdam in the box culvert is 2.5 meters, and performing integral cleaning treatment after removing accumulated water and silt in the cofferdam. And then the manufactured protective sleeve, tools, jigs, materials and the like are carried into the working surface to be put into use.
S3, polishing and cleaning treatment of inner surface of sewage pipeline
Digging out and cleaning the deposited sludge in the damaged sewage pipeline, flushing the inner wall surface by using a high-pressure water gun, carrying out ventilation drying treatment after flushing, carrying out mechanical polishing treatment, polishing away dirt and rust parts on the surface by using an electric arm-extending type hand mill, enabling the surface of the pipeline to expose a clean new surface, flattening and smoothing, cleaning the inner wall of the sewage pipeline again by using the high-pressure water gun, and wiping accumulated water in the pipeline by using a rag towel and the like.
S4, mounting of lining tube
Confirming parallelism and flatness of a box culvert bottom plate and a sewage pipeline, if the parallelism and flatness cannot meet the requirements, leveling and polishing the box culvert bottom plate until the design requirements are met, driving a lining pipe into the sewage pipeline by a mode of hammering the lining pipe in a box culvert interface side sewage pipeline after sealing an end portion silica gel elastic sealing ring, performing secondary sealing treatment on two ends of the lining pipe by using a silica gel strip and the silica gel elastic sealing ring and matching with nano microcrystal quick plugging agents after the lining pipe is inserted in place, drilling a head grouting hole and a tail grouting hole respectively, and simultaneously installing corresponding grouting nozzles.
S5, cavity grouting between the lining pipe and the sewage drain pipe:
the grouting material is prepared on site, the grouting mouth at the bottom of two ends of the lining pipe is respectively filled with the composite polymer super-strong elastic waterproof grouting plugging agent by a high-pressure grouting machine, a continuous injection mode is adopted, the condition changes of the inner side, the outer side and the end of the lining pipe are observed while grouting operation, when the injected slurry reaches the designed dosage, and slurry overflows from a top grouting hole, the grouting mouth is arranged at the top grouting hole, slurry injection is carried out from the top, meanwhile, the rising change of a pressure gauge is observed, grouting is temporarily stopped when the grouting pressure reaches 0.1Mp, the internal slurry pressure change displayed by the pressure gauge is observed, and when the pressure reaches stability, grouting operation construction is finished.
S6, maintenance operation
After the grouting operation is finished, the maintenance operation is carried out for 24 hours.
S7, removing the water retaining cofferdam material and cleaning the garbage.
2) The reinforcing and reinforcing method of the outer sleeve comprises the following steps:
s1, polishing construction of outer surfaces of sewage pipelines
Firstly, mechanically polishing the surface layer of the sewage drain pipe, and polishing off dirt on the surface by an electric hand grinder to expose a new surface of the original resin protective layer on the surface of the sewage drain pipe so as to be flat and smooth.
S2, preparation of the outer sleeve
And carrying out on-site combined processing treatment on the prefabricated outer sleeve, welding reinforcing ribs on the outer wall of the outer sleeve, drilling bolt holes on the butt joint edges, and drilling mechanical high-pressure pouring holes and slurry manual pouring holes on the outer sleeve respectively.
S3, mounting an outer sleeve:
and (3) fastening and installing a water stop needle head at the bottom end part of the manufactured outer sleeve, then adhering the PVC sealing strip to the inner side of the butt joint edge by using a structure nail-free adhesive, punching the position, opposite to the bolt hole, of the PVC sealing strip to enable the PVC sealing strip to reach a through state, and then oppositely jointing the outer sleeve on the outer wall side of the sewage pipeline by using a locking bolt.
S4, outer sleeve sealing reinforcement treatment:
the parts of the two ends of the installed outer sleeve, which are contacted with the concrete wall, are subjected to rigid compaction and reinforcement treatment by using the nano microcrystalline quick plugging agent, and an inclined angle with R=100 is formed at the joint part.
S5, grouting in a cavity between the outer sleeve and the sewage drain pipe:
the method comprises the steps of pouring composite high-molecular elastic waterproof grouting material into a slurry manual grouting hole of an outer sleeve firstly until the slurry is discharged from an exhaust hole, then pouring the composite high-molecular super-strong elastic waterproof grouting material into the reserved bottom mechanical high-pressure grouting hole of the outer sleeve by using a high-pressure grouting machine, placing a grouting nozzle into the slurry manual grouting hole at the top and injecting the slurry when the injected slurry overflows from the slurry manual grouting hole at the top, observing the rising change of a pressure gauge, temporarily stopping grouting when the grouting pressure reaches 0.3Mp, observing the pressure change of the slurry in the pressure gauge, and finishing grouting operation construction when the pressure reaches stability.
S6, maintenance operation
After grouting work is finished, maintenance work is carried out, a special person is responsible for pumping water to control the water level during the maintenance work, and the seepage water level of underground water is guaranteed not to rise to the height of more than 2 meters of the working surface.
S7, brushing and maintenance of anti-corrosion coating film
The working face sewage drain pipeline is moistened and maintained for 12 hours, accumulated water in the working face foundation pit is drained, the surface of the outer sleeve is dried, the inlet raw material is coated with specially-made modified epoxy anticorrosive glue for five times, the film forming thickness reaches more than 1.2mm, and then the drying and the maintenance are carried out for 24 hours.
The reinforcing structure and the reinforcing method for the pipeline provided by the invention have the beneficial effects that: the invention has simple construction process and low maintenance cost, and the structural strength and the service life of the sewage pipeline are improved while the corrosion and water leakage of the sewage pipeline are maintained by respectively arranging the inner liner pipe and the outer sleeve pipe on the inner wall and the outer wall of the sewage pipeline and filling the composite polymer elastic waterproof grouting material.
Drawings
FIG. 1 is a schematic structural view of a reinforcing structure for a pipe according to the present invention;
FIG. 2 is a schematic cross-sectional view of a reinforcing structure for a pipe according to the present invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
fig. 4 is an enlarged schematic view of the portion B in fig. 2.
In the figure: liner tube 1, blow off pipe 2, stainless steel strip 3, silica gel elastic seal ring 4, head slip casting hole 5, first fixed steel sheet 6, outer tube 7, mechanical high pressure pouring hole 8, reinforcing rib 9, manual pouring hole 10 of thick liquid, butt joint limit 11, locking bolt 12, PVC sealing strip 13, silica gel strip 14, afterbody slip casting hole 15, second fixed steel sheet 16.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to figures 1-4, a reinforcing and reinforcing structure of a pipeline comprises a lining pipe 1 and an outer sleeve 7, wherein the lining pipe 1 and the outer sleeve 7 are respectively arranged on the inner side and the outer side of a sewage pipeline 2, a plurality of stainless steel bars 3 are uniformly and fixedly arranged on the outer side of the pipe wall of the lining pipe 1 at equal intervals, two symmetrically arranged first fixed steel sheets 6 are fixedly arranged at the end part of the head part of the lining pipe 1, two bilaterally symmetrical semi-ring-shaped silica gel elastic sealing rings 4 are fixedly arranged between the two first fixed steel sheets 6 through cementing, head grouting holes 5 are respectively arranged at the top and the bottom opposite to each other of the two silica gel elastic sealing rings 4, the width of the silica gel elastic sealing rings 4 is 30mm, the minimum compression thickness is 10mm, the gap width of the head grouting holes 5 is 20mm, a second fixed steel sheet 16 is fixedly arranged at the tail part of the lining pipe 1, two symmetrical semi-annular silica gel strips 14 are fixedly arranged on one side of the second fixing steel sheet 16 through gluing, tail grouting holes 15 are formed between the opposite top and bottom of the two silica gel strips 14, the silica gel strips 14 are arranged at positions 100mm away from the tail end face of the lining tube 1, the width of the silica gel strips 14 is 30mm, the minimum compression thickness is 10mm, the gap width of the tail grouting holes 15 is 10mm, the lining tube 1 is of a stainless steel tube structure with the outer diameter of 380mm, the thickness of 2mm and the length of 2500mm, the width of the stainless steel strips 3 is 100mm, the thickness of 2mm, the distance between adjacent stainless steel strips 3 is 550mm, the distance between the ports of the stainless steel strips 3 at the two ends of the lining tube 1 is 100mm, and the stainless steel strips 3 are tightly attached to the outer wall of the lining tube 1 and are welded and fixed in a seamless mode in the axis direction of the vertical lining tube 1.
The outer sleeve 7 is formed by detachably connecting two semicircular jigs, a plurality of reinforcing ribs 9 are uniformly distributed and fixed on the outer wall of the outer sleeve 7 at equal intervals, mechanical high-pressure pouring holes 8 and slurry manual pouring holes 10 are symmetrically formed in the top of the outer sleeve 7, the outer sleeve 7 is of a semicircular jig structure with the outer diameter of 460mm and the thickness of 1.5mm, the width of each reinforcing rib 9 is 12mm, the thickness of each reinforcing rib is 2mm, the diameter of each mechanical high-pressure pouring hole 8 is 14mm, the pouring diameter of each slurry manual pouring hole 10 is 50mm, the sealing diameter of each slurry manual pouring hole 10 is 14mm, butt joint edges 11 are fixedly arranged on the side sides of the two outer sleeves 7, PVC sealing strips 13 are clamped between the butt joint edges 11 and the PVC sealing strips 13, a plurality of penetrating bolt holes are formed in the butt joint edges 11 and the PVC sealing strips 13, the two outer sleeves 7 are detachably connected through the butt joint edges 11 and the locking bolts 12, and the contact parts of the outer sleeve 7 and the concrete wall are subjected to rigid dense reinforcement treatment by nano microcrystal quick plugging agents, and the joint parts are made into slope angle structures of R=100.
The reinforcing method for the pipeline comprises a reinforcing method for the lining pipe 1 and a reinforcing method for the outer sleeve 7, and specifically comprises the following steps:
1) The reinforcing and reinforcing method of the lining pipe 1 comprises the following steps:
s1, ventilation and illumination of working face and working face
And generating power by using a 30KW diesel engine on site, and carrying out working face illumination and power setting.
S2, setting a water retaining cofferdam and cleaning a working face:
and (3) building water retaining cofferdams on two sides of a box culvert bottom plate near the working surface, wherein the width of the working surface of the cofferdam in the box culvert is 2.5 meters, and performing integral cleaning treatment after removing accumulated water and silt in the cofferdam. And then the manufactured protective sleeve, tools, jigs, materials and the like are carried into the working surface to be put into use.
S3, polishing and cleaning treatment of inner surface of sewage pipeline 2
Digging out and cleaning the deposited sludge in the damaged sewage pipeline 2, flushing the inner wall surface by using a high-pressure water gun, carrying out ventilation drying treatment after flushing, carrying out mechanical polishing treatment, polishing away dirt and rust parts on the surface by using an electric arm-extending type hand mill, enabling the surface of the pipeline to expose a clean new surface, flattening and smoothing, cleaning the inner wall of the sewage pipeline again by using the high-pressure water gun, and wiping accumulated water in the pipeline by using a rag towel and the like.
S4, mounting the lining tube 1
And if the parallelism and flatness of the box culvert bottom plate and the sewage pipeline 2 cannot be confirmed, leveling and polishing the box culvert bottom plate are needed until the design requirement is met, then, the liner tube 1 sealed by the end silica gel elastic sealing ring 4 is driven into the sewage pipeline 2 from one side of the box culvert interface by the sewage pipeline 2 in a re-hammering manner, after the box culvert bottom plate and the sewage pipeline 2 are inserted in place, the silica gel strips 14 and the silica gel elastic sealing ring 4 are matched with nano microcrystalline quick plugging agent to carry out secondary sealing treatment on the two ends of the liner tube, and the head grouting hole 5 and the tail grouting hole 15 are drilled respectively, and meanwhile, corresponding grouting nozzles are installed.
S5, cavity grouting between the lining pipe 1 and the sewage drain pipe 2:
the grouting material is prepared on site, the grouting mouth at the bottom of the two ends of the lining pipe 1 is respectively filled with the composite polymer super-strong elastic waterproof grouting plugging agent by a high-pressure grouting machine, a continuous injection mode is adopted, the condition changes of the inner and outer sides and the end of the lining pipe 1 are observed while grouting operation, when the injected slurry reaches the designed dosage and the slurry overflows from the top grouting hole, the grouting mouth is arranged at the top grouting hole, the slurry injection is carried out from the top, meanwhile, the rising change of the pressure gauge is observed, when the grouting pressure reaches 0.1Mp, the grouting is stopped temporarily, the internal slurry pressure change displayed by the pressure gauge is observed, and when the pressure reaches stability, the grouting operation construction is finished.
S6, maintenance operation
After the grouting operation is finished, the maintenance operation is carried out for 24 hours.
S7, removing the water retaining cofferdam material and cleaning the garbage.
2) The reinforcing and reinforcing method of the outer sleeve 7 comprises the following steps:
s1, polishing construction of outer surfaces of sewage pipelines
Firstly, mechanically polishing the surface layer of the sewage drain pipe 2, and polishing off dirt on the surface by an electric hand grinder to expose a new surface of the original resin protective layer on the surface of the sewage drain pipe 2 so as to be flat and smooth.
S2, preparation of the outer sleeve 7
The prefabricated outer sleeve 7 is subjected to on-site combined processing, the outer wall of the outer sleeve 7 is welded with a reinforcing rib 9, a bolt hole is drilled on a butt joint edge 11, and a mechanical high-pressure pouring hole 8 and a slurry manual pouring hole 10 are drilled on the outer sleeve 7 respectively.
S3, mounting an outer sleeve 7:
the water stop needle head is fastened and installed at the bottom end part of the manufactured outer sleeve 7, then the PVC sealing strip 13 is stuck to the inner side of the butt joint edge 11 by using the structure nail-free glue, the PVC sealing strip 13 is punched at the position opposite to the bolt hole to reach a through state, and then the outer sleeve 7 is oppositely matched on the outer wall side of the sewage pipeline 2 by using the locking bolt 12.
S4, sealing and reinforcing treatment of the outer sleeve 7:
the two ends of the installed outer sleeve 7 are in contact with the concrete wall, the parts are subjected to rigid compaction and reinforcement treatment by using the nano microcrystalline quick plugging agent, and an inclined angle with R=100 is formed at the joint part.
S5, grouting in a cavity between the outer sleeve 7 and the sewage drain pipe 2:
the method comprises the steps of pouring composite high-polymer elastic waterproof grouting material into a manual grouting hole 10 of an outer sleeve 7 until the grouting material is discharged from an exhaust hole, namely a mechanical high-pressure grouting hole 8, then injecting the composite high-polymer super-strong elastic waterproof grouting material into the reserved bottom mechanical high-pressure grouting hole 8 of the outer sleeve 7 by a high-pressure grouting machine, placing a grouting nozzle into the manual grouting hole 10 of the top grouting material when the injected grouting material overflows from the manual grouting hole 10 of the top grouting material, injecting the grouting material, observing the rising change of a pressure gauge, temporarily stopping grouting when the grouting pressure reaches 0.3Mp, observing the pressure change of the internal grouting material displayed by the pressure gauge, and finishing grouting operation construction when the pressure reaches stability.
S6, maintenance operation
After grouting work is finished, maintenance work is carried out, a special person is responsible for pumping water to control the water level during the maintenance work, and the seepage water level of underground water is guaranteed not to rise to the height of more than 2 meters of the working surface.
S7, brushing and maintenance of anti-corrosion coating film
The working face sewage drain pipe 2 is wet-cured for 12 hours, accumulated water in a working face foundation pit is drained, the surface of the outer sleeve 7 is dried, then the special modified epoxy anticorrosive glue for the inlet raw material is painted for five times, the film forming thickness reaches more than 1.2mm, and then the drying and curing are carried out for 24 hours.
The invention has simple construction process and low maintenance cost, and the structural strength and the service life of the sewage pipeline 2 are improved while the corrosion and water leakage of the sewage pipeline 2 are maintained by respectively arranging the inner liner tube 1 and the outer sleeve tube 7 on the inner wall and the outer wall of the sewage pipeline 2 and filling the composite high polymer elastic waterproof grouting material.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The reinforcing and reinforcing method for the pipeline comprises a lining pipe (1) and an outer sleeve (7), wherein the lining pipe (1) is arranged on the inner side of a sewage pipeline (2), the outer sleeve (7) is arranged on the outer side of the sewage pipeline (2), the reinforcing and reinforcing method is characterized in that a plurality of stainless steel bars (3) are uniformly distributed and fixed on the outer side of the pipe wall of the lining pipe (1) at equal intervals, two first fixed steel sheets (6) which are symmetrically arranged are fixedly arranged at the end part of the head of the lining pipe (1), two semi-ring type silica gel elastic sealing rings (4) which are symmetrically arranged at the left and right are fixedly arranged between the two first fixed steel sheets (6) through gluing, head grouting holes (5) are respectively arranged between the opposite top parts and the bottom of the two silica gel elastic sealing rings (4), a second fixed steel sheet (16) is fixedly arranged at the tail part of the lining pipe (1), tail grouting holes (15) are respectively arranged between the opposite top parts and the bottom of the two semi-ring type silica gel bars (14), the outer sleeve (7) is detachably connected with a plurality of semi-ring type silica gel bars (9) at equal intervals, the top of the outer sleeve (7) is symmetrically provided with a mechanical high-pressure pouring hole (8) and a slurry manual pouring hole (10);
the reinforcing method of the lining tube (1) and the reinforcing method of the outer sleeve (7) specifically comprise the following steps:
1) The reinforcing and reinforcing method of the lining pipe (1) comprises the following steps:
s1, ventilation and illumination of a working face:
the 30KW diesel engine is used for generating electricity on site to carry out illumination and power setting of a working face,
s2, setting a water retaining cofferdam and cleaning a working face:
water retaining cofferdams are built on two sides of a box culvert bottom plate near a working face, the width of the working face of the cofferdam in the box culvert is 2.5 meters, the integral cleaning treatment is carried out after accumulated water and silt in the cofferdam are discharged, then the manufactured protective sleeve, tools, grouting materials and the like are carried into the working face for preparation for use,
s3, polishing and cleaning the inner surface of the sewage pipeline (2):
digging out and cleaning the deposited sludge in the sewage drain pipe (2), flushing the inner wall surface by a high-pressure water gun, drying after flushing, mechanically polishing, grinding the dirt and rust parts on the surface by an electric arm-extending type hand mill to expose clean new surfaces on the surface of the pipe, flattening and smoothing, cleaning the inner wall of the sewage drain pipe again by the high-pressure water gun, wiping accumulated water in the pipe by a rag towel and the like,
s4, mounting the lining pipe (1):
confirming the parallelism and flatness of the box culvert bottom plate and the sewage drain pipe (2), if the parallelism and flatness of the box culvert bottom plate cannot meet the requirements, leveling and polishing the box culvert bottom plate until the design requirements are met, inserting the inner liner pipe (1) sealed by the end silica gel elastic sealing ring (4) into the sewage drain pipe (2) from one side of a box culvert interface, driving the inner liner pipe (1) into the sewage drain pipe (2) in a heavy hammering manner, and after the inner liner pipe is inserted in place, performing secondary sealing treatment on two ends of the inner liner pipe by using the silica gel strips (14) and the silica gel elastic sealing ring (4) and matching with nano microcrystalline quick plugging agents, and respectively drilling a head grouting hole (5) and a tail grouting hole (15), and simultaneously installing corresponding grouting nozzles;
s5, grouting a cavity between the lining pipe (1) and the sewage drain pipe (2):
preparing grouting materials on site, respectively injecting composite polymer super-strong elastic waterproof grouting plugging agents from grouting nozzles at the bottoms of two ends of a lining pipe (1) by using a high-pressure grouting machine, adopting a continuous injection mode, observing the condition changes of the inner liner pipe (1) and the outer liner pipe and the end head while grouting operation, installing the grouting nozzles at the top grouting holes and injecting the grouting materials from the top when the injected grouting materials reach the designed dosage and overflow from the top grouting holes, observing the rising change of a pressure gauge at the same time, temporarily stopping grouting when the grouting pressure reaches 0.1Mp, observing the internal grouting pressure change displayed by the pressure gauge, and finishing grouting operation construction when the pressure reaches stability;
s6, maintenance operation:
after the grouting operation is finished, the maintenance operation is carried out for 24 hours,
s7, removing the water retaining cofferdam material, cleaning garbage,
2) The reinforcing and reinforcing method of the outer sleeve (7) comprises the following steps:
s1, polishing construction of the outer surface of a sewage pipeline:
firstly, mechanically polishing the surface layer of the sewage drain pipe (2), polishing off dirt on the surface by an electric hand grinder, enabling the surface of the sewage drain pipe (2) to expose a new surface of the original resin protective layer to be flat and smooth,
s2, preparing an outer sleeve (7):
the prefabricated outer sleeve (7) is processed by on-site combined processing, the outer wall of the outer sleeve (7) is welded with a reinforcing rib (9), a bolt hole is drilled on the butt joint edge (11), a mechanical high-pressure pouring hole (8) and a slurry manual pouring hole (10) are drilled on the outer sleeve (7) respectively,
s3, mounting an outer sleeve (7):
the bottom end part of the manufactured outer sleeve (7) is fastened and provided with a water stop needle head, then a PVC sealing strip (13) is stuck on the inner side of a butt joint edge (11) by using a structure nail-free glue, the PVC sealing strip (13) is punched at the position opposite to the bolt hole to reach a through state, then the outer sleeve (7) is relatively combined on the outer wall side of a sewage pipeline (2) by using a locking bolt (12),
s4, sealing and reinforcing treatment of the outer sleeve (7):
the two ends of the installed outer sleeve (7) are contacted with the concrete wall, the parts are subjected to rigid compaction and reinforcement treatment by using nano microcrystalline quick plugging agent, the junction part is made into a slope angle structure,
s5, grouting in a cavity between the outer sleeve (7) and the sewage drain pipe (2):
pouring composite high polymer elastic waterproof grouting material into a manual grouting hole (10) of an outer sleeve (7) until the grouting material is discharged from a mechanical high-pressure grouting hole (8) of an exhaust hole, then injecting the composite high polymer super-strong elastic waterproof grouting material into the reserved top mechanical high-pressure grouting hole (8) of the outer sleeve (7) by a high-pressure grouting machine, placing a grouting nozzle into the manual grouting hole (10) at the top and injecting the grouting material when the injected grouting material overflows from the manual grouting hole (10) at the top, observing the rising change of a pressure gauge, temporarily stopping grouting when the grouting pressure reaches 0.3Mp, observing the pressure change of the internal grouting material displayed by the pressure gauge, finishing grouting operation construction when the pressure reaches a stable state,
s6, maintenance operation:
after the grouting work is finished, maintenance work is carried out, a special person is responsible for pumping water to control the water level during the maintenance work, so that the seepage water level of the underground water can not rise to the height of more than 2 meters on the working surface,
s7, brushing and maintenance of an anti-corrosion coating:
after the working surface sewage drain pipeline (2) is moistened and cured for 12 hours, the accumulated water in the working surface foundation pit is drained, the surface of the outer sleeve (7) is dried, and then the imported raw material special modified epoxy anticorrosive glue is coated for five times, the film forming thickness reaches more than 1.2mm, and then the drying and curing are carried out for 24 hours.
2. The reinforcing and reinforcing method for a pipeline according to claim 1, wherein the lining pipe (1) is of a stainless steel pipe structure with an outer diameter of 380mm, a thickness of 2mm and a length of 2500mm, the width of the stainless steel strips (3) is 100mm, the thickness of the stainless steel strips is 2mm, the distance between adjacent stainless steel strips (3) is 550mm, the distances between the stainless steel strips (3) at two ends of the lining pipe (1) and the ports are 100mm, and the stainless steel strips (3) are tightly attached to the outer wall of the lining pipe (1) and are welded and fixed in a seamless mode in the axial direction perpendicular to the lining pipe (1).
3. A method for reinforcing a pipe according to claim 1, wherein the width of the silica gel elastic seal ring (4) is 30mm, the minimum compression thickness is 10mm, and the gap width of the head grouting hole (5) is 20mm.
4. The method for reinforcing and reinforcing a pipeline according to claim 1, wherein the silica gel strip (14) is arranged at a position 100mm away from the tail end surface of the lining pipe (1), the width of the silica gel strip (14) is 30mm, the minimum compression thickness is 10mm, and the gap width of the tail grouting hole (15) is 10mm.
5. The reinforcing and reinforcing method for the pipeline according to claim 1, wherein the outer sleeve (7) is of a semicircular jig structure with the outer diameter of 460mm and the thickness of 1.5mm, the width of the reinforcing rib (9) is 12mm, the thickness of the reinforcing rib is 2mm, the diameter of the mechanical high-pressure pouring hole (8) is 14mm, the pouring diameter of the slurry manual pouring hole (10) is 50mm, the sealing diameter of the slurry manual pouring hole (10) is 14mm, butt joint edges (11) are fixedly arranged on the side sides of the two outer sleeves (7), a PVC sealing strip (13) is clamped between the butt joint edges (11) in butt joint, a plurality of penetrating bolt holes are formed in the butt joint edges (11) and the PVC sealing strip (13), and the two outer sleeves (7) are detachably connected through the butt joint edges (11) and the locking bolts (12).
6. The method for reinforcing and reinforcing a pipeline according to claim 1, wherein the contact part between the two ends of the outer sleeve (7) and the concrete wall is subjected to rigid compaction and reinforcement treatment by using a nano microcrystalline rapid plugging agent, and a slope angle structure is formed at the joint part.
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| CN110701384B (en) * | 2019-11-04 | 2021-08-13 | 中建一局集团第一建筑有限公司 | Pipe joint reinforcing method during hanging of socket pipe |
| CN110966481B (en) * | 2019-11-21 | 2021-06-15 | 中电建生态环境集团有限公司 | Pressure pipeline repairing construction method |
| CN110984172B (en) * | 2019-11-26 | 2021-07-02 | 秦皇岛兴龙建设工程有限公司 | Horizontal steel supporting mechanism for foundation pit supporting and use method thereof |
| CN110925517A (en) * | 2019-12-17 | 2020-03-27 | 上海水务建设工程有限公司 | Non-excavation large-caliber water supply pressure pipeline repairing construction method |
| CN112945471B (en) * | 2021-01-29 | 2022-12-23 | 济南鸿泰医疗管理集团有限公司 | Hydraulic heat exchanger detection device capable of rapidly detecting air tightness |
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