Leakage and seepage prevention construction process for flocculation and precipitation clean water pool

Abstract

The application provides a kind of flocculation and precipitation clean water pool leak-proof and anti-seepage construction process, comprising the following steps: S1, mix proportion optimization and raw material control: optimize the mix proportion of concrete, control water-binder ratio and impermeable grade, and use after all incoming raw materials are rechecked and qualified.The application provides a kind of flocculation and precipitation clean water pool leak-proof and anti-seepage construction process, through S1 mix proportion optimization and raw material control, S2 bottom plate construction, S3 construction joint treatment, S4 junction construction, S5 expansion joint construction, S6 pipeline wall penetration construction, S7 maintenance each process step cooperation, from raw material impermeable control, bottom plate bottom anti-seepage, new and old joint combination, pool bottom corner, expansion joint water stop, wall penetration sleeve sealing, long-term moisturizing maintenance multi-channel anti-seepage node standardization control, each leakage-prone location construction is dense without through seepage channel, comprehensively improves the overall impermeability of pool body concrete.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank. Background Technology

[0002] Flocculation sedimentation clear water tanks are the core water storage structures in water treatment plants, and their leak-proof and seepage-proof performance directly determines the structure's service life, the stability of the water treatment process, and the safety of the water supply. With the continuous improvement of drinking water hygiene standards (GB5749-2022), more stringent requirements have been placed on the seepage resistance of clear water tanks. Currently, large clear water tanks mostly use reinforced concrete structures, and the construction process involves multiple procedures such as bottom slab pouring, tank wall construction, construction joint treatment, expansion joint installation, and pipe penetration through walls. Defects in any of these stages can lead to tank leakage.

[0003] In existing clear water tank construction, leakage problems mainly focus on the following areas: First, the bonding between old and new concrete at construction joints is not tight. Due to insufficient roughening depth and incomplete cleaning, a through-seepage channel forms at the joint surface. Second, honeycomb-like pitting occurs at the junction of the tank wall and the bottom slab due to inadequate vibration and insufficient concrete density. Third, the waterstop at expansion joints is not installed properly, and the sealant filling is incomplete, resulting in substandard waterproofing. Fourth, improper waterproofing at pipe penetration points creates potential leakage hazards. In addition, unreasonable concrete mix design and inadequate curing can also exacerbate concrete cracking, further weakening the overall impermeability of the tank.

[0004] Therefore, it is necessary to provide a construction process for preventing leakage and seepage in flocculation sedimentation clear water tanks to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides a construction process for preventing leakage and seepage in flocculation sedimentation clear water tanks, which solves the problems of lack of construction control standards for key seepage prevention nodes in existing clear water tanks, difficulty in ensuring the construction quality of concrete density, joint waterproofing, and water-stop structure, and easy occurrence of through-seepage in the tank body.

[0006] To solve the above-mentioned technical problems, the present invention provides a construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank, comprising the following steps:

[0007] S1. Mix proportion optimization and raw material control: Optimize concrete mix proportion, control water-cement ratio and impermeability grade, and use all incoming raw materials only after they have passed the re-inspection.

[0008] S2. Base slab construction: Tie the base slab reinforcement, lay an anti-seepage layer at the bottom of the base slab and seal the lap joints, and pour the base slab concrete in layers and vibrate it to compact it.

[0009] S3. Construction joint treatment: Roughen and clean the concrete surface at the construction joint, apply interface treatment agent, and assist in vibration at the construction joint when pouring new concrete.

[0010] S4. Construction at the junction: A rounded chamfer is set at the junction of the pool wall and the bottom slab, and layered pouring and intensive vibration are adopted;

[0011] S5. Expansion joint construction: Install and fix the waterstop, heat-connect the waterstop joints, and fill the sealant in layers after the concrete is poured and then cure it.

[0012] S6. Construction at pipe penetration points: Pre-embed a pipe sleeve with a water-stop ring, assist in vibration when pouring concrete around the sleeve, and fill the gap between the pipe and the sleeve after pipe installation.

[0013] S7. Curing: After the concrete is poured, cover it in time to keep it moist and cure it until the designed curing time is reached, and adjust the curing method according to the weather.

[0014] Preferably, in step S1, the water-cement ratio of the concrete mix proportion is ≤0.55, the impermeability grade is not lower than P8, and the theoretical mix proportion parameters are cement:sand:crushed stone:water = 244:741:1044:164; the mixing time is not less than 90s, and the measurement error of each raw material does not exceed the following limits: cement, water, admixture ±1%, sand and gravel ±2%; after mixing, a workability test is performed, and the slump deviation does not exceed ±30mm of the design value.

[0015] Preferably, in step S2, the seepage-proof layer is a plastic film with a thickness of 0.18~0.2mm, and three layers are laid with an overlap width of not less than 100mm. The overlap is sealed with waterproof tape or heat-welded. When the bottom slab concrete is poured in layers, the thickness of each layer does not exceed 50cm, and an immersion vibrator is used in conjunction with a plate vibrator for compaction.

[0016] Preferably, in step S3, the roughening treatment is carried out manually, with a roughening depth ≥ 5 mm. There are no fewer than 8 roughening depth detection points at each construction joint, which are evenly distributed. The average roughening depth is ≥ 5 mm, and the minimum is not less than 4 mm. After roughening, a high-pressure water gun or compressed air is used to thoroughly clean the surface laitance, dust, and debris. After cleaning, the interface treatment agent can be applied only after the surface has been measured and inspected and approved. The interface treatment agent is a cement slurry with a water-binder ratio of 0.4 to 0.5.

[0017] Preferably, in step S5, the waterstop is a steel-edged rubber waterstop with a horizontal section length of 30-40mm and a deviation of the center line of the waterstop from the center line of the construction joint of no more than 5mm; the waterstop joint is connected by hot vulcanization welding; when the sealant is filled in layers, the thickness of each layer does not exceed 10mm, and the layers are filled and compacted until full and dense without air bubbles or gaps, and the sealant curing time is not less than 7 days.

[0018] Preferably, in step S4, the thickness of each layer of the layered pouring does not exceed 50cm. In steps S4 and S6, φ30mm insert vibrators are used as small vibrators for key vibration and auxiliary vibration, and the number of vibrators configured is not less than 4 per construction area. During vibration, the spacing between vibration points does not exceed 1.5 times the effective radius of the vibrator, and the depth of the vibrator inserted into the lower layer of concrete is not less than 5cm.

[0019] Preferably, in step S7, the timely covering and moisturizing curing involves covering the concrete with a moisturizing cloth and continuously sprinkling water within 4-6 hours after the concrete is poured; the designed curing time is no less than 28 days for the impermeable concrete; the curing adopts a dedicated person in charge system, with a clear person in charge of curing and a person in charge of technology for each construction section, and collisions with the pool structure are strictly prohibited during the curing period.

[0020] Preferably, a spraying device is used for moisturizing and maintenance. The spraying device includes multiple connecting components, each of which has a spraying component on its outer side, and a positioning component at the bottom of the spraying component.

[0021] Preferably, the connecting assembly includes a pipe, with a male connector and a female connector fixedly installed at both ends of the pipe, and a through hole opened at the top of the pipe. The spraying assembly includes a fixing ring, which is fixedly installed on the outer side of the pipe. A housing is fixedly installed on the top of the fixing ring. A rotating tube is rotatably connected to the inside of the top of the housing. A connecting rod is fixedly installed at the bottom of the inner side of the rotating tube. A worm gear is fixedly installed at the bottom of the connecting rod. The worm gear is disposed on the inner side of the housing. A fan-shaped plate is fixedly installed at both ends of the top of the rotating tube, and a nozzle is fixedly installed on the side of the fan-shaped plate.

[0022] Preferably, the positioning component includes a counterweight plate, the positioning plate is fixedly installed at the bottom of the fixing ring, and a rubber sleeve is fixedly installed on the outer side of the counterweight plate.

[0023] Compared with related technologies, the flocculation sedimentation clear water tank leak-proof and seepage-proof construction process provided by the present invention has the following beneficial effects:

[0024] This invention provides a construction process for preventing leakage and seepage in flocculation sedimentation clear water tanks. Through the coordinated steps of S1 mix proportion optimization and raw material control, S2 base slab construction, S3 construction joint treatment, S4 junction construction, S5 expansion joint construction, S6 pipe penetration construction, and S7 curing, this process achieves standardized control of multiple seepage prevention nodes, including raw material anti-seepage control, bottom slab anti-seepage, new and old joint integration, tank bottom corners, expansion joint sealing, wall penetration sleeve sealing, and long-term moisture retention curing. The process ensures dense construction at all leakage-prone locations, eliminating through-seepage channels and comprehensively improving the overall anti-seepage performance of the tank concrete. This addresses the lack of construction control standards for key anti-seepage nodes in existing clear water tanks, which makes it difficult to guarantee the density of concrete, waterproofing of joints, and the quality of water-stopping structures, leading to the problem of through-seepage in the tank. Attached Figure Description

[0025] Figure 1 A schematic diagram of the construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank provided by the present invention;

[0026] Figure 2 A schematic diagram of the first embodiment of a spraying device for a flocculation sedimentation clear water tank leak-proof and seepage-proof construction process provided by the present invention;

[0027] Figure 3 for Figure 2 The diagram shows the structure of the connecting components, spraying components, and positioning components.

[0028] Figure 4 for Figure 3 The diagram shows a partial cross-sectional view of the spraying assembly.

[0029] Figure 5 This is a schematic diagram of the second embodiment of a spraying device for a flocculation sedimentation clear water tank leak-proof and seepage-proof construction process provided by the present invention.

[0030] The following are the labels in the diagram: 1. Connecting component, 11. Pipe, 12. Male connector, 13. Female connector, 14. Through hole, 2. Spraying component, 21. Fixing ring, 22. Housing, 23. Rotating tube, 24. Connecting rod, 25. Worm gear, 26. Sector plate, 27. Nozzle, 3. Positioning component, 31. Counterweight plate, 32. Rubber sleeve. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] First Embodiment

[0033] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1A schematic diagram of the construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank provided by the present invention; Figure 2 A schematic diagram of the first embodiment of a spraying device for a flocculation sedimentation clear water tank leak-proof and seepage-proof construction process provided by the present invention; Figure 3 for Figure 2 The diagram shows the structure of the connecting components, spraying components, and positioning components. Figure 4 for Figure 3 The diagram shows a partial cross-sectional view of the spraying assembly.

[0034] A construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank includes the following steps:

[0035] S1. Mix proportion optimization and raw material control: Optimize concrete mix proportion, control water-cement ratio and impermeability grade, and use all incoming raw materials only after they have passed the re-inspection.

[0036] S2. Base slab construction: Tie the base slab reinforcement, lay an anti-seepage layer at the bottom of the base slab and seal the lap joints, and pour the base slab concrete in layers and vibrate it to compact it.

[0037] S3. Construction joint treatment: Roughen and clean the concrete surface at the construction joint, apply interface treatment agent, and assist in vibration at the construction joint when pouring new concrete.

[0038] S4. Construction at the junction: A rounded chamfer is set at the junction of the pool wall and the bottom slab, and layered pouring and intensive vibration are adopted;

[0039] S5. Expansion joint construction: Install and fix the waterstop, heat-connect the waterstop joints, and fill the sealant in layers after the concrete is poured and then cure it.

[0040] S6. Construction at pipe penetration points: Pre-embed a pipe sleeve with a water-stop ring, assist in vibration when pouring concrete around the sleeve, and fill the gap between the pipe and the sleeve after pipe installation.

[0041] S7. Curing: After the concrete is poured, cover it in time to keep it moist and cure it until the designed curing time is reached, and adjust the curing method according to the weather.

[0042] In step S1, the water-cement ratio of the concrete mix proportion is ≤0.55, the impermeability grade is not lower than P8, and the theoretical mix proportion parameters are cement:sand:crushed stone:water = 244:741:1044:164; the mixing time is not less than 90s, and the measurement error of each raw material does not exceed the following limits: cement, water, admixture ±1%, sand and gravel ±2%; after mixing, a workability test is performed, and the slump deviation does not exceed ±30mm of the design value.

[0043] During the concrete mix design phase, trial mixes were conducted with a water-cement ratio ≤0.55 and a permeability grade ≥P8. The theoretical mix ratio was cement:sand:crushed stone:water = 244:741:1044:164. The mix could only be used after passing a 28-day permeability test on test blocks. Each batch of cement, sand, gravel, and admixtures arriving on site required re-inspection. The mud content, mud lump content, and gradation of the sand and gravel had to meet the requirements of GB / T14684 and GB / T14685. During mixing and feeding, the metering error of cement, water, and admixtures was controlled within ±1%, and the metering error of sand and gravel did not exceed ±2%. The mixing time was set to be no less than 90 seconds to ensure uniformity of the mixture. After each batch was discharged, the slump was tested, and the deviation between the measured value and the design value was controlled within ±30mm. If this deviation exceeded this range, the water content or admixture dosage was immediately adjusted until the workability met the requirements for pumping and pouring.

[0044] In step S2, the seepage-proof layer is made of a plastic film with a thickness of 0.18~0.2mm, and three layers are laid with an overlap width of not less than 100mm. The overlap is sealed with waterproof tape or heat-sealed. When the bottom slab concrete is poured in layers, the thickness of each layer does not exceed 50cm, and an immersion vibrator is used in conjunction with a plate vibrator for compaction.

[0045] After the bottom slab reinforcement is tied, three layers of 0.18~0.2mm thick plastic film are laid on the foundation as a seepage prevention layer. The layers are laid in a staggered manner, with an overlap width of ≥100mm between adjacent layers. The overlap joints are sealed with special waterproof tape or welded with a heat-sealing welding machine. The welding temperature is controlled at 120~150℃. After the weld cools, the sealing is checked, and there should be no incomplete welds or false welds. The bottom slab concrete is poured in layers, with each layer thickness controlled within 50cm. First, each layer is vibrated with an immersion vibrator, with the vibration point spacing ≤1.5 times the effective radius of the vibrator. The vibration time at each point is 20~30s, until the surface is covered with slurry and no longer settles. Then, a plate vibrator is used to vibrate the surface a second time to eliminate surface air bubbles and improve flatness. After pouring, the surface is promptly finished and smoothed to prevent surface cracking.

[0046] In step S3, the roughening treatment is carried out manually, with a roughening depth ≥5mm. There are no fewer than 8 roughening depth detection points at each construction joint, which are evenly distributed. The average roughening depth is ≥5mm, and the minimum is not less than 4mm. After roughening, a high-pressure water gun or compressed air is used to thoroughly clean the surface laitance, dust, and debris. After cleaning, the interface treatment agent can be applied only after the surface has been measured and inspected and approved. The interface treatment agent is a cement slurry with a water-binder ratio of 0.4~0.5.

[0047] The surface roughening process can only begin when the concrete at the construction joint reaches 75% or more of its design strength. The surface laitance layer should be removed manually with a steel chisel or pneumatic hammer to a depth ≥5mm. At least 8 measuring points should be evenly distributed at each construction joint, and a depth gauge should be used for testing. The average depth should be ≥5mm, and the minimum depth at a single point ≥4mm. If these requirements are not met, additional roughening should be performed. After roughening, a high-pressure water gun (pressure ≥0.5MPa) or compressed air (0.6~0.8MPa) should be used to thoroughly remove laitance, dust, and loose particles, exposing fresh coarse aggregate. After on-site measurement and verification, a cement slurry with a water-cement ratio of 0.4~0.5 should be applied as an interface treatment agent. The slurry should be applied evenly and without omissions, with a thickness of approximately 1~2mm. The upper layer of new concrete should be poured immediately before the cement slurry initially sets, and a vibrator should be used to assist in compaction to ensure a tight bond between the old and new concrete.

[0048] In step S5, the waterstop is a steel-edged rubber waterstop with a horizontal section length of 30-40mm and a deviation of the center line of the waterstop from the center line of the construction joint of no more than 5mm. The waterstop joint is connected by hot vulcanization welding. When the sealant is filled in layers, the thickness of each layer does not exceed 10mm. The sealant is filled and compacted layer by layer until it is full, dense, and free of air bubbles and voids. The curing time of the sealant is not less than 7 days.

[0049] At expansion joints, install steel-edged rubber waterstops at the designed locations. The horizontal section length of the waterstop should be controlled at 30-40mm, with its centerline aligned with the construction joint centerline. The installation deviation should not exceed 5mm. Securely fix the waterstops using specialized steel clamps to prevent displacement during pouring. The waterstop joints should be welded using a hot vulcanizing welding machine. The welding temperature should be controlled at 140-160℃, the pressure at 0.3-0.5MPa, and the welding time should follow the product instructions. After welding, inspect the weld for fullness and absence of cracks. After concrete pouring, wait for the joint to dry and clean before filling it with specialized sealant in layers, each layer not exceeding 10mm in thickness. Compact each layer with a specialized roller to ensure complete filling without air bubbles. The top of the sealant should be slightly lower than the concrete surface by about 2-3mm. Curing should be carried out for at least 7 days after filling, during which time contact with water or debris should be avoided.

[0050] In step S4, the thickness of each layer of the layered pouring does not exceed 50cm. In steps S4 and S6, φ30mm immersion vibrators are used as small vibrators for key vibration and auxiliary vibration, and the number of vibrators configured is not less than 4 per construction area. During vibration, the spacing between vibration points does not exceed 1.5 times the effective radius of the vibrator, and the depth of the vibrator inserted into the lower layer of concrete is not less than 5cm.

[0051] When installing the formwork at the junction of the pool wall and the bottom slab, a rounded chamfer (radius ≥ 20mm) should be set according to the design to eliminate stress concentration. The concrete in this area should be poured in layers along with the pool wall, with each layer not exceeding 50cm in thickness. A φ30mm immersion vibrator should be used for focused compaction. Each construction area should be equipped with no fewer than 4 vibrators, with 2 on standby. During vibration, the spacing between vibration points should not exceed 1.5 times the effective radius of the vibrator (approximately 30~40cm). The vibrator should be inserted ≥ 5cm into the lower layer of concrete, inserted quickly and withdrawn slowly, with the vibration time at each point extended to 30~40s, until the surface shows a slurry layer and no air bubbles escape, ensuring the concrete at the junction is highly compacted and preventing honeycomb or pitted surfaces.

[0052] In step S7, the timely covering and moisturizing curing means covering the concrete with a moisturizing cloth and continuously sprinkling water within 4-6 hours after the concrete is poured; the designed curing time is no less than 28 days for the impermeable concrete; the curing adopts a dedicated person in charge system, with a clear person in charge of curing and a person in charge of technology for each construction section, and collisions with the pool structure are strictly prohibited during the curing period.

[0053] Within 4-6 hours of concrete pouring (before final setting), immediately cover the concrete with a moisture-retaining cloth (such as geotextile or cotton felt) and continuously sprinkle water to keep the cloth surface moist, avoiding alternating wet and dry conditions. During the curing period, assign dedicated personnel to be responsible, with a designated curing supervisor and technical supervisor for each construction section, recording curing temperature, humidity, and watering frequency daily. The total curing time for impermeable concrete should not be less than 28 days. Increase watering frequency during hot summer months and use insulation blankets or steam curing measures during cold winter months to ensure the concrete surface temperature does not fall below 5°C. During the curing period, large machinery or personnel are strictly prohibited from colliding with the pool walls and bottom slab to prevent cracking. The next stage of construction or water testing can only proceed after the curing period is complete.

[0054] The moisturizing and maintenance process requires the use of a spraying device, which includes multiple connecting components 1. Each of the multiple connecting components 1 has a spraying component 2 on its outer side, and a positioning component 3 is provided at the bottom of the spraying component 2.

[0055] The connecting assembly 1 includes a pipe 11, with a male connector 12 and a female connector 13 fixedly installed at both ends of the pipe 11. A through hole 14 is provided at the top of the pipe 11. The spraying assembly 2 includes a fixing ring 21, which is fixedly installed on the outer side of the pipe 11. A housing 22 is fixedly installed on the top of the fixing ring 21. A rotating tube 23 is rotatably connected to the inside of the top of the housing 22. A connecting rod 24 is fixedly installed at the bottom of the inner side of the rotating tube 23. A worm gear 25 is fixedly installed at the bottom of the connecting rod 24. The worm gear 25 is located on the inner side of the housing 22. A fan-shaped plate 26 is fixedly installed at both ends of the top of the rotating tube 23. A nozzle 27 is fixedly installed on the side of the fan-shaped plate 26.

[0056] Working principle of the spraying device: During concrete curing operations, the layout of the spraying device is first determined according to the structural dimensions of the pool. Multiple connecting components 1 are connected end-to-end through male connectors 12 and female connectors 13 to form a spraying network covering the entire curing area. The pipes 11 of each connecting component 1 are quickly connected through male and female connectors. The spacing between adjacent pipes 11 is determined according to the spraying radius of the nozzles 27 to ensure that the spraying coverage is complete.

[0057] The connected spraying network is laid on the concrete surface that has been covered with a moisture-retaining cloth, and the positioning component 3 is located at the bottom of each spraying component 2.

[0058] An external water source supplies pressurized maintenance water into pipe 11. The water flows along pipe 11, and when it passes through the through hole 14 at the top of pipe 11, some of the water enters the housing 22 through the through hole 14. The water entering the housing 22 impacts the blades of the worm gear 25, driving the worm gear 25 to rotate continuously. The worm gear 25 drives the rotating pipe 23 to rotate at the top of the housing 22 via the connecting rod 24. The rotating pipe 23 drives the fan-shaped plates 26 fixed at both ends of its top and the nozzles 27 on the sides of the fan-shaped plates 26 to rotate synchronously.

[0059] After passing through the worm gear 25, the water flows upward through the internal channel of the rotating tube 23 and finally exits from the nozzle 27 via the fan-shaped plate 26. As the nozzle 27 rotates continuously with the rotating tube 23, the water is evenly sprayed onto the surface of the moisturizing cloth within a 360° range under the combined action of centrifugal force and rotational driving force, achieving large-area, uniform automatic watering and maintenance.

[0060] When the water source is turned off, the water flow stops, the worm gear 25 loses its driving force, the nozzle 27 stops rotating, and the watering operation is paused. When watering is needed again, simply turning the water back on will automatically resume the rotation and spraying.

[0061] Compared with related technologies, the flocculation sedimentation clear water tank leak-proof and seepage-proof construction process provided by the present invention has the following beneficial effects:

[0062] Through the coordinated efforts of each step—S1 mix ratio optimization and raw material control, S2 base slab construction, S3 construction joint treatment, S4 junction construction, S5 expansion joint construction, S6 pipe penetration construction, and S7 curing—standardized control of multiple seepage prevention nodes is achieved. This includes raw material anti-seepage control, bottom layer anti-seepage of the base slab, combination of new and old joints, pool bottom corners, expansion joint water sealing, wall penetration sleeve sealing, and long-term moisture retention curing. The construction at each leakage-prone location is dense and free of through-seepage channels, comprehensively improving the overall anti-seepage performance of the pool concrete. This addresses the lack of construction control standards for key anti-seepage nodes in existing clear water pools, the difficulty in guaranteeing concrete density, joint waterproofing, and the quality of water-stopping construction, and the problem of through-seepage in the pool body.

[0063] Second Embodiment

[0064] Please refer to the following: Figure 5 Based on the first embodiment of this application, which provides a construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank, the second embodiment of this application proposes another construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0065] Specifically, the difference in the construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank provided in the second embodiment of this application is that the positioning component 3 includes a counterweight plate 31, the positioning plate 31 is fixedly installed at the bottom of the fixing ring 21, and a rubber sleeve 32 is fixedly installed on the outer side of the counterweight plate 31.

[0066] The working principle of the anti-leakage and seepage prevention construction process for a flocculation sedimentation clear water tank provided by this invention is as follows:

[0067] When the spraying device is laid in the concrete curing area, the counterweight plate 31 of the positioning component 3 is located at the bottom of the fixing ring 21. The weight of the counterweight plate 31 itself will stably press the spraying component 2 onto the surface of the moisturizing cloth or the concrete surface, preventing the spraying component 2 from shifting, overturning or tipping over under the impact of water flow or external disturbance.

[0068] The rubber sleeve 32, fixedly installed on the outside of the counterweight plate 31, directly contacts the moisturizing cloth or concrete surface. The elastic material of the rubber sleeve 32 increases the coefficient of friction between the sleeve and the contact surface, further improving the anti-slip ability of the spraying assembly 2. This ensures that even if the water flow impact causes slight vibration in the pipe 11 during water spraying, the spraying assembly 2 remains stable and does not slip or deflect. At the same time, the flexible material of the rubber sleeve 32 prevents wear or indentation damage caused by direct contact between the rigid counterweight plate 31 and the moisturizing cloth or the formed concrete surface, thus protecting the moisturizing cloth and the concrete surface.

[0069] Compared with related technologies, the flocculation sedimentation clear water tank leak-proof and seepage-proof construction process provided by the present invention has the following beneficial effects:

[0070] The positioning component 3, consisting of counterweight plate 31 and rubber sleeve 32, works in conjunction with the fixing ring 21 and pipe 11. The counterweight plate 31 presses down and fixes the spraying component 2 by its own weight. The rubber sleeve 32 increases the friction between the counterweight plate 31 and the curing base surface, suppressing the component slippage and tilting caused by water vibration. At the same time, the flexible contact surface of the rubber sleeve 32 prevents the hard counterweight plate 31 from scratching and damaging the moisturizing cloth and the formed concrete.

[0071] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank, characterized in that, Includes the following steps: S1. Mix proportion optimization and raw material control: Optimize concrete mix proportion, control water-cement ratio and impermeability grade, and use all incoming raw materials only after they have passed the re-inspection. S2. Base slab construction: Tie the base slab reinforcement, lay an anti-seepage layer at the bottom of the base slab and seal the lap joints, and pour the base slab concrete in layers and vibrate it to compact it. S3. Construction joint treatment: Roughen and clean the concrete surface at the construction joint, apply interface treatment agent, and assist in vibration at the construction joint when pouring new concrete. S4. Construction at the junction: A rounded chamfer is set at the junction of the pool wall and the bottom slab, and layered pouring and intensive vibration are adopted; S5. Expansion joint construction: Install and fix the waterstop, heat-connect the waterstop joints, and fill the sealant in layers after the concrete is poured and then cure it. S6. Construction at pipe penetration points: Pre-embed a pipe sleeve with a water-stop ring, assist in vibration when pouring concrete around the sleeve, and fill the gap between the pipe and the sleeve after pipe installation. S7. Curing: After the concrete is poured, cover it in time to keep it moist and cure it until the designed curing time is reached, and adjust the curing method according to the weather.

2. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 1, characterized in that, In step S1, the water-cement ratio of the concrete mix proportion is ≤0.55, the impermeability grade is not lower than P8, and the theoretical mix proportion parameters are cement:sand:crushed stone:water = 244:741:1044:164; the mixing time is not less than 90s, and the measurement error of each raw material does not exceed the following limits: cement, water, admixture ±1%, sand and gravel ±2%; after mixing, a workability test is performed, and the slump deviation does not exceed ±30mm of the design value.

3. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 1, characterized in that, In step S2, the seepage-proof layer is made of a plastic film with a thickness of 0.18~0.2mm, and three layers are laid with an overlap width of not less than 100mm. The overlap is sealed with waterproof tape or heat-sealed. When the bottom slab concrete is poured in layers, the thickness of each layer does not exceed 50cm, and an immersion vibrator is used in conjunction with a plate vibrator for compaction.

4. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 1, characterized in that, In step S3, the roughening treatment is carried out manually, with a roughening depth ≥5mm. There are no fewer than 8 roughening depth detection points at each construction joint, which are evenly distributed. The average roughening depth is ≥5mm, and the minimum is not less than 4mm. After roughening, a high-pressure water gun or compressed air is used to thoroughly clean the surface laitance, dust, and debris. After cleaning, the interface treatment agent can be applied only after the surface has been measured and inspected and approved. The interface treatment agent is a cement slurry with a water-binder ratio of 0.4~0.

5.

5. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 1, characterized in that, In step S5, the waterstop is a steel-edged rubber waterstop with a horizontal section length of 30-40mm and a deviation of the center line of the waterstop from the center line of the construction joint of no more than 5mm. The waterstop joint is connected by hot vulcanization welding. When the sealant is filled in layers, the thickness of each layer does not exceed 10mm. The sealant is filled and compacted layer by layer until it is full, dense, and free of air bubbles and voids. The curing time of the sealant is not less than 7 days.

6. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 1, characterized in that, In step S4, the thickness of each layer of the layered pouring does not exceed 50cm. In steps S4 and S6, φ30mm immersion vibrators are used as small vibrators for key vibration and auxiliary vibration, and the number of vibrators configured is not less than 4 per construction area. During vibration, the spacing between vibration points does not exceed 1.5 times the effective radius of the vibrator, and the depth of the vibrator inserted into the lower layer of concrete is not less than 5cm.

7. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 1, characterized in that, In step S7, timely covering and moisturizing curing means covering the concrete with a moisturizing cloth and continuously sprinkling water within 4-6 hours after the concrete is poured; the designed curing time is no less than 28 days for the impermeable concrete; the curing adopts a system of dedicated personnel, with clear curing and technical personnel in charge for each construction section, and collisions with the pool structure are strictly prohibited during the curing period.

8. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 7, characterized in that, The moisturizing and maintenance process requires the use of a spraying device, which includes multiple connecting components. Spraying components are provided on the outer surfaces of the multiple connecting components, and positioning components are provided at the bottom of the spraying components.

9. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 8, characterized in that, The connecting assembly includes a pipe, with a male connector and a female connector fixedly installed at both ends of the pipe, and a through hole at the top of the pipe. The spraying assembly includes a fixing ring, which is fixedly installed on the outer side of the pipe. A housing is fixedly installed on the top of the fixing ring. A rotating tube is rotatably connected to the inside of the top of the housing. A connecting rod is fixedly installed at the bottom of the inner side of the rotating tube. A worm gear is fixedly installed at the bottom of the connecting rod. The worm gear is located on the inner side of the housing. Sector plates are fixedly installed at both ends of the top of the rotating tube, and nozzles are fixedly installed on the sides of the sector plates.

10. The construction process for preventing leakage and seepage in a flocculation sedimentation clear water tank according to claim 9, characterized in that, The positioning component includes a counterweight plate, which is fixedly installed at the bottom of the fixing ring, and a rubber sleeve is fixedly installed on the outer side of the counterweight plate.

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