Fabricated plain concrete thin-walled pool and construction method thereof

Abstract

An assembled plain concrete thin-walled pool and a construction method thereof belong to the technical field of municipal engineering production and life water supply. The pool is composed of a pool wall, a cable and a hydraulic membrane. The pool wall is enclosed by columns, arch rings and baffle plates arranged on a raft. The arch rings and baffle plates are connected in series through force transmission rods and are arranged at intervals with the columns, and are connected through the baffle plates at the corners. The top and bottom ends of the columns are tensioned through the cables, and struts and scissors are arranged between adjacent columns. The blocks and the backwater surface of the baffle plates are provided with a drag net. The inside of the pool wall and the bottom are paved with a hydraulic membrane that is integrated by splicing, and a protection layer composed of fine sand and a hydraulic cloth is arranged under the membrane. A sun-proof water-proof cloth is covered on the top of the pool above the cable, and the columns are connected with the peripheral anchor bases through cable wind ropes. The pool balances the horizontal thrust through the structure system combining rigidity and flexibility, improves the overall anti-deformation capacity and stability of the pool, all components are standardized prefabricated, and is suitable for agricultural irrigation, municipal water supply and other scenes, and has significant economic and social benefits.

Description

Technical Field

[0001] This invention belongs to the field of municipal engineering production and domestic water supply technology, specifically relating to a prefabricated plain concrete thin-walled water tank and its construction method. Background Technology

[0002] Water tanks, as important water storage facilities, are widely used in agricultural irrigation, municipal water supply, industrial water use, and fire-fighting water storage. With the increasing global water shortage, the demand for efficient and low-cost water tank construction technologies is growing. Traditional water tank construction technologies mainly include brick-built tanks, masonry tanks, and reinforced concrete tanks. While these traditional methods are mature, they have many shortcomings in terms of construction speed, cost control, and environmental performance. With the advancement of modern engineering technology, prefabricated water tanks have gradually become a new construction method. Prefabricated water tanks have advantages such as fast construction speed, mobility, recyclability, and lower cost. However, they still face some technical bottlenecks in practical applications. Firstly, their structure is monotonous. As the diameter of a circular water tank increases, the curvature of the tank wall decreases, reducing the efficiency of bearing horizontal thrust loads perpendicular to the tank wall. The stress state of the tank wall deteriorates sharply with increasing diameter, easily leading to deformation, damage, or even collapse of the tank wall.

[0003] Existing prefabricated water tanks mostly use thin-walled steel plates, which have weak resistance to deformation. Especially in large-diameter water tanks, the horizontal tensile force on the tank wall increases significantly with the increase of diameter. Thin-walled steel plate water tanks have low structural rigidity and poor resistance to external loads such as wind and earthquakes, posing significant safety hazards. The materials also have poor weather resistance and corrosion resistance, requiring high maintenance and increasing the cost of use.

[0004] This limits the application of existing water tank technology to simple projects with small diameters, shallow depths, good environmental conditions, and low safety requirements. It makes it difficult to meet the needs of modern water conservancy projects with large diameters and deep water levels, and restricts its promotion and application in water resource development, utilization, and management in large-scale municipal engineering, industry, agriculture, and ecology. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a prefabricated plain concrete thin-walled water tank and its construction method, which has advantages such as fast construction speed, low cost, and strong adaptability, and has broad application prospects and promotion value.

[0006] A prefabricated plain concrete thin-walled water tank, characterized in that it includes a tank wall, a raft, cables, and a hydraulic membrane. The tank wall is set on the raft and is composed of columns, arches, and baffles. It is arranged in a double-axis symmetrical polygon in plan view. The columns are reinforced concrete variable cross-section T-shaped structures with their web width gradually narrowing upwards. The arches are upright semi-circular columns convex towards the water body, constructed by dry-masonry of masonry blocks.

[0007] The raft slab comprises a column raft slab, an arch raft slab, and a baffle raft slab. Columns stand upright on the column raft slab, arches are stacked on the arch raft slab, and baffles are mounted on the baffle raft slab. The raft slab is a reinforced concrete flat slab. The inner edges of all raft slabs are flush with the corresponding columns, arches, and baffles. The column raft slab is rectangular or isosceles trapezoidal, the arch raft slab is a semicircle with the same diameter as the outer diameter of the arch, and the baffle raft slab is an isosceles trapezoid. Columns and arches are alternately arranged and connected in sequence to form polygonal straight-line segments of the pool wall. Baffles are used to connect two columns at the corners of the pool wall. Slots are reserved on the column raft slab, and reinforced concrete limit blocks are inserted on both sides of the column to restrict the rotation and lateral displacement of the column.

[0008] Adjacent columns are connected by struts, and the tops of corresponding columns on the plane are connected by cables, and the bottoms are connected by cables. Each block and baffle is equipped with at least two hooks on the back side. The hooks on the same level are connected by steel wire ropes and their ends are fixed to the web of the column. The steel wires of each level are connected vertically to form a net between adjacent columns.

[0009] A welded hydraulic membrane is laid along the inner side of the pool wall and the bottom of the pool, with its edges suspended at the top of the pool wall; a protective pad is set under the hydraulic membrane, which includes fine sand laid at the bottom of the pool and hydraulic fabric padding around the openings of the pool wall, corners, water intake pipe and sludge discharge pipe.

[0010] A sun-proof and waterproof cloth is laid on top of the cable-stayed roof of the pool, and water-permeable holes are made at the bottom of the lower part of the sun-proof and waterproof cloth.

[0011] The anchors and columns on the outer perimeter of the pool are connected by guy ropes; the bottom of the pool is equipped with water intake pipes and sludge discharge pipes that connect to the outside of the pool, and the pipe openings at the inner end of the pool are tightly connected to the hydraulic membrane through composite water tank joints or flanges.

[0012] Furthermore, the blocks are connected by force transmission rods in both the horizontal and vertical directions; the columns are also connected to the arch and the baffle by force transmission rods.

[0013] Furthermore, the minimum length of the baffle is determined by calculation according to L≥M+2(R+D)(1-cos(90-α / 2)), where M is the minimum allowable distance between the arches at the corner of the pool, and for ease of construction, it is generally taken as not less than 1.0m; R is the outer radius of the arch; D is the distance between the arch feet on the left and right sides of the column wing plate, and for ease of construction, it is taken as not less than 0.6m; α is the interior angle of the polygon at the corner.

[0014] A method for constructing a prefabricated plain concrete thin-walled water tank, characterized by the following steps:

[0015] S1. Design the water tank according to the usage requirements and construction site conditions, determine the shape, specifications and quantity of columns, baffles and rafts, and prefabricate them.

[0016] S2, clean the construction base surface of the water tank, level and compact it; the bearing capacity and stability of the tank wall and anchorage location meet the requirements, and the settlement and deformation of the foundation in other locations must not endanger the tank wall and anchorage foundation.

[0017] S3, pre-buried water intake pipe and sludge discharge pipe, the pipe opening inside the pool is at the same height as the bottom of the pool, and a vertical pipe to prevent sludge and sand is added to the water intake pipe inlet; guy ropes are installed around the pool to fix the anchor.

[0018] S4. Lay the raft slab, erect supports and scaffolding, erect columns on the column raft slab, insert reinforced concrete limit blocks on both sides of the column base, connect the top of adjacent columns with struts and erect scissor braces; assemble the arch ring on the arch ring raft slab with masonry blocks, and use two different sizes of masonry blocks alternately on adjacent arch ring layers; install baffles on the baffle raft slab; connect the masonry blocks, baffles, and columns with force transmission rods to limit relative displacement; the pool wall is built in a step-by-step symmetrical cycle, maintaining synchronous rise in all directions in a balanced manner;

[0019] S5. Install a mesh net and connect the hanging buckles to prevent the blocks or baffles from slipping off towards the water-facing side.

[0020] S6, connect the guy rope between the top of the column and the anchor; connect the guy rope and guy rope symmetrically in batches, and tighten them in a step-by-step symmetrical cycle after all the guy ropes and guy ropes are connected; after the guy ropes and guy ropes are tightened, disassemble and remove the support and scaffolding.

[0021] S7. Lay fine sand at the bottom of the pool, and thicken the fine sand layer at the corners between the pool wall and the bottom, and around the openings of the water intake pipe and the sludge discharge pipe; add hydraulic fabric pads around the pool wall, corners, and openings of the water intake pipe and the sludge discharge pipe; lay a welded hydraulic membrane, with the edges of the hydraulic membrane suspended and fixed to the top of the pool wall; use composite water tank joints or flanges to seal the water intake pipe and the sludge discharge pipe to the hydraulic membrane; lay a sunshade and waterproof cloth above the pull rope on the top of the pool to seal it, and open water permeable holes at the bottom of the low-hanging part of the sunshade and waterproof cloth.

[0022] The beneficial effects of this invention are as follows: The water tank utilizes a combination of plain concrete arches and columns, along with a force transmission system of cables and baffles, creating a novel water tank structure. This retains the strength and durability of rigid materials while achieving good overall structural elasticity through flexible splicing, maintaining adaptability and enhancing the water tank's resistance to deformation. The modular structure, with the walls of large-sized water tanks composed of several arch and column units forming a composite curved surface, allows for flexible arrangement. All units share the same configuration, featuring a horizontal semi-circular arch structure with no lateral thrust at the arch feet and a vertically tubular structure, resulting in extremely high strength and stability. This makes it particularly suitable for constructing large-capacity water tanks, breaking through the size limitations of traditional thin-walled water tanks. Furthermore, this water tank has completely independent protective features. The permeable layer ensures complete separation of wet and dry areas, preventing water immersion in load-bearing structural components. This results in excellent freeze-thaw and corrosion resistance, significantly improved weather resistance, extended service life of structural components, and easier maintenance and replacement. The arch ring only bears positive pressure and is not submerged in water, creating conditions for the use of plain concrete with low impermeability requirements, simplifying the manufacturing process of components and reducing costs. The use of a raft slab reduces the bearing capacity of the pool wall foundation, decreases on-site construction work including foundation treatment, lowers foundation treatment requirements, and further highlights the speed and cost advantages of this type of pool construction. Through symmetrical arrangement and mutual tension, the pool's force transmission system can effectively counteract horizontal thrust, achieving self-balance of the main load forces and significantly improving the stability and safety of the pool structure.

[0023] The blocks and columns used in constructing the water tank are of identical design, facilitating standardized design and prefabrication. On-site assembly and connection are simple, resulting in a straightforward construction process, rapid construction speed, and high assembly precision. The lightweight and compact components facilitate transportation and on-site operation, making them particularly suitable for rapid construction in remote areas with challenging conditions. Furthermore, the modular design of the entire structure enhances its adaptability, enabling it to cope with diverse geological conditions and climates. It also facilitates later maintenance and renovation, extending the project's lifespan and further reducing long-term operating costs.

[0024] The water tank is characterized by its rapid construction, low cost, and economic and environmental benefits, making it highly valuable for promotion and offering significant socio-economic benefits. It is particularly suitable for application in water supply projects where resources are limited or time is tight. Attached Figure Description

[0025] Figure 1 This is a plan view of an embodiment 1 of a prefabricated plain concrete thin-walled water tank.

[0026] Figure 2 This is a detailed plan view of the corner of a prefabricated plain concrete thin-walled water tank.

[0027] Figure 3 This is a schematic diagram showing the plan layout of the raft at the corner of the pool and the calculation of the baffle length.

[0028] Figure 4 This is a vertical cross-sectional view of a prefabricated plain concrete thin-walled water tank.

[0029] Figure 5 This is a schematic diagram of a block structure.

[0030] Figure 6 This is a schematic diagram of the baffle structure.

[0031] Figure 7 This is a schematic diagram showing the connection between the column and the strut.

[0032] Figure 8 This is a schematic diagram of the floor plan layout for Example 2.

[0033] Among them: 1-arch ring, 2-cable, 21-anchor bolt, 22-guer rope, 3-column, 4-baffle, 5-hydraulic membrane, 6-first block, 61-second block, 7-strut, 8-force transmission rod, 81-force transmission rod insertion hole, 9-column raft slab, 91-limiting block, 10-arch ring raft slab, 11-baffle raft slab, 12-hanging buckle, 13-net, 14-anchor seat, 15-fine sand, 16-water intake pipe, 17-sludge discharge pipe, 18-composite water tank connector, 19-vertical pipe. Detailed Implementation

[0034] Example 1: In this example, a prefabricated plain concrete thin-walled water tank is constructed, including a tank wall, a raft, cables 2, and a hydraulic membrane 5. The tank wall is set on the raft and is formed by columns 3, arches 1, and baffles 4. The tank wall is arranged in a double-axis symmetrical polygon in plan. The columns 3 are reinforced concrete variable cross-section T-shaped structures with their web width gradually narrowing upwards. The arches are upright semi-circular columns convex to the water body, constructed by dry-laying masonry blocks. The masonry blocks include first blocks 6 and second blocks 61 of different specifications.

[0035] The raft slab includes a column raft slab 9, an arched raft slab 10, and a baffle raft slab 11. Columns 3 stand on the column raft slab 9, arches 1 are stacked on the arched raft slab 10, and baffles 4 are mounted on the baffle raft slab 11. The raft slab is a reinforced concrete slab. The inner edges of all raft slabs are flush with the corresponding columns 3, arches 1, and baffles 4. The column raft slab 9 is rectangular or isosceles trapezoidal, the arched raft slab 10 is a semicircle with the same diameter as the outer diameter of the arch, and the baffle raft slab 11 is an isosceles trapezoid. Columns 3 and arches 1 are alternately arranged and connected to form the straight section of the pool wall of the polygonal pool. The two columns 3 at the corners of the pool wall are connected by baffles 4. Slots are reserved on the column raft slab 9, and reinforced concrete limit blocks are inserted on both sides of the column 3 to restrict the rotation and lateral displacement of the column.

[0036] Adjacent columns 3 are connected by struts 7. Corresponding columns 3 on the plane are connected at their tops by cables 2 and at their bottoms by cables 2. At least two hooks 12 are provided on the back side of each block and baffle. The hooks 12 on the same level are connected by steel wire ropes and their ends are fixed to the web of the column 3. The steel wires of each level are connected vertically to form a net 13 between adjacent columns.

[0037] A hydraulic membrane 5, welded as one piece, is laid along the inner side of the pool wall and the bottom of the pool, with its edges suspended at the top of the pool wall; a protective pad is set under the hydraulic membrane 5, which includes fine sand 15 laid at the bottom of the pool and hydraulic fabric padding around the openings of the pool wall, the corners, the water intake pipe 16 and the sludge discharge pipe 17.

[0038] A sunshade and waterproof cloth is laid on top of the pool top cable 2 to seal the top, and water-permeable holes are opened at the bottom of the valley section of the sunshade and waterproof cloth.

[0039] The anchor 14 and the top of the column 3, which are set on the outer side of the pool wall, are connected by guy rope 22. The bottom of the pool is equipped with a water intake pipe 16 and a sludge discharge pipe 17 that connect to the outside of the pool. The pipe opening at the inner end of the pool is tightly connected to the water membrane 5 through the composite water tank connector 18.

[0040] The pool was constructed according to the following steps:

[0041] S1: Design the water tank according to usage requirements and site conditions; determine the shape, specifications, and quantity of columns 3, baffles 4, and raft slabs, and prefabricate them; clean, level, and compact the site; design volume 30,000 m³. 3 A regular hexagonal pool, 13.50m deep and 30cm thick, is constructed according to the pool's specifications. The pool walls are formed by 36 arches 1 and 6 baffles 4. The outer diameter of the arches 1 is 5.00m and the length of the baffles 4 is 2.50m.

[0042] S2, On an open ground with good foundation bearing capacity, the ground is cleared, leveled and compacted, and the stability and bearing capacity of the area where the raft slab is laid meet the requirements. Settlement is allowed in other locations.

[0043] S3, anchors 14 for fixing guy ropes are set around the pool. A ring drainage ditch is built between the proposed pool wall and the anchors 14. During the rainy season, the surface runoff is discharged into the downstream river. Water intake pipe 16 and mud discharge pipe 17 are pre-buried. The pipe openings inside the pool are at the same height as the bottom of the pool. A vertical pipe 19 for preventing mud and sand is set at the water inlet of the water intake pipe 16.

[0044] S4. Lay the raft slab. The raft slab is a reinforced concrete slab of uniform thickness. The raft slab includes column raft slab 9, arched raft slab 10, and baffle raft slab 11. Column raft slab 9 is rectangular or isosceles trapezoidal, arched raft slab 10 is a semicircle with the same diameter as the outer diameter of the arch, and baffle raft slab 11 is an isosceles trapezoid. The inner edges of all raft slabs are flush with the corresponding columns 3, arches 1, and baffles 4. When water is impounded, the raft slab does not bear the weight of the water in the pool, but only the self-weight of its superstructure, to ensure that the load on the raft slab is light and constant under different water impoundment conditions, reducing the bearing capacity requirements of the pool wall foundation. Then, erect the support frame and scaffolding. Erect columns 3 on column raft slab 9, insert reinforced concrete limiting blocks 91 on both sides of the column base, and connect the top of adjacent columns with struts 7 and install scissor bracing. On the arched raft slab 10... The upper arch is constructed using masonry blocks, with different first masonry blocks 6 and second masonry blocks 61 used alternately for adjacent layers of arches. Baffles 4 are installed on the baffle raft 11. The masonry blocks, the baffles 4, and the masonry blocks, baffles 4, and columns 3 are connected by inserting force transmission rods 8 into the pre-reserved force transmission rod holes 81 on the precast components, thus limiting the relative displacement between the components. The columns 3 and the arch 1 are spaced apart and connected sequentially to form the straight section of the pool wall of the polygonal pool. The columns 3 at the corners of the pool wall are connected by baffles 4 to the various sides of the pool wall. The arch 1 is constructed in a step-by-step symmetrical cycle, maintaining synchronous rise. Under the action of equal radial water pressure in all directions, there is only a normal pressure perpendicular to the contact surface between the masonry blocks of the ring and between the arch and the columns, eliminating the sliding or torsional stress between the arch 1 and the columns 3.

[0045] S5, at least two hooks 12 are installed on the back side of each block and baffle 4. The hooks 12 on the same layer are connected by steel wire and their two ends are fixed to the column 3 through the hooks 12. The steel wires of each layer are connected vertically with the same steel wire, forming a net 13 between adjacent columns and tightening it to prevent the baffle 4 and block from slipping towards the front side. The hooks 12 can prevent the entire block from dislodging when the steel wire connected to the block breaks. When an individual steel wire connected to the column breaks, the load can be transferred to the adjacent steel wire, and the effective tension can still be maintained.

[0046] S6, the tops and bottoms of the opposing columns 3 on the plane are connected to each other by cables 2, and the top of the column 3 is connected to the anchor 14 by guy ropes 22; the cables 2 and guy ropes 22 are connected symmetrically in batches, and after all are connected, they are tightened in a step-by-step symmetrical cycle. The ends of the cables 2 are fixed and the tension is adjusted by using the anchor bolts 21 set on the outer side of the waist plate of the column 3; after the cables 2 and guy ropes 22 are tightened, the brackets and scaffolding are disassembled and removed.

[0047] S7. Fine sand 15 is laid at the bottom of the pool. The fine sand 15 is thickened at the corners between the pool wall and the bottom, and around the openings of the water intake pipe 16 and the sludge discharge pipe 17. Hydraulic fabric is added around the pool wall, corners, and the openings of the water intake pipe 16 and the sludge discharge pipe 17. The fine sand 15 and the hydraulic fabric form a protective pad. A hydraulic membrane 5 welded together is laid on the protective pad. The edges of the hydraulic membrane 5 are suspended and fixed to the top of the pool wall. The water intake pipe 16 and the sludge discharge pipe 17 are sealed to the hydraulic membrane 5 using a composite water tank joint 18 or a flange. A sunshade and water-proof cloth is laid above the cable 2 at the top of the pool to seal the top. Water-permeable holes are opened at the bottom of the valley of the lower part of the sunshade and water-proof cloth.

[0048] The water tank has been completed.

[0049] Example 2: This is a case study of a square water tank constructed using a prefabricated plain concrete thin-walled water tank construction method. The tank wall is composed of 40 semi-circular arches and 4 baffle walls. The outer diameter of the arches is 4.00m, the baffle length is 3.70m, the depth is 11.5m, and the designed volume of the tank is 20,000 m³. 3 The setup steps are the same as in Example 1.

Claims

1. A prefabricated plain concrete thin-walled water tank, characterized in that: It includes pool walls, rafts, cables, and hydraulic membranes. The pool walls are set on the rafts and are composed of columns, arches, and baffles. The layout in the plan is a double-axis symmetrical polygon. The columns are reinforced concrete variable cross-section T-shaped structures with their web width gradually narrowing upwards. The arches are upright semi-circular columns convex towards the water body, constructed by dry-laying and splicing masonry blocks. The raft slab comprises a column raft slab, an arch raft slab, and a baffle raft slab. Columns stand upright on the column raft slab, arches are stacked on the arch raft slab, and baffles are mounted on the baffle raft slab. The raft slab is a reinforced concrete flat slab. The inner edges of all raft slabs are flush with the corresponding columns, arches, and baffles. The column raft slab is rectangular or isosceles trapezoidal, the arch raft slab is a semicircle with the same diameter as the outer diameter of the arch, and the baffle raft slab is an isosceles trapezoid. Columns and arches are alternately arranged and connected in sequence to form polygonal straight-line segments of the pool wall. Baffles are used to connect two columns at the corners of the pool wall. Slots are reserved on the column raft slab, and reinforced concrete limit blocks are inserted on both sides of the column to restrict the rotation and lateral displacement of the column. Adjacent columns are connected by struts, and the tops of corresponding columns on the plane are connected by cables, and the bottoms are connected by cables. Each block and baffle is equipped with at least two hooks on the back side. The hooks on the same level are connected by steel wire ropes and their ends are fixed to the web of the column. The steel wires of each level are connected vertically to form a net between adjacent columns. A welded hydraulic membrane is laid along the inner side of the pool wall and the bottom of the pool, with its edges suspended at the top of the pool wall; a protective pad is set under the hydraulic membrane, which includes fine sand laid at the bottom of the pool and hydraulic fabric padding around the openings of the pool wall, corners, water intake pipe and sludge discharge pipe. A sun-proof and waterproof cloth is laid on top of the cable-stayed roof of the pool, and water-permeable holes are made at the bottom of the lower part of the sun-proof and waterproof cloth. The anchors and columns on the outer perimeter of the pool are connected by guy ropes; the bottom of the pool is equipped with water intake pipes and sludge discharge pipes that connect to the outside of the pool, and the pipe openings at the inner end of the pool are tightly connected to the hydraulic membrane through composite water tank joints or flanges.

2. The prefabricated plain concrete thin-walled water tank as described in claim 1, characterized in that... The blocks are connected horizontally and vertically by force transmission rods; the columns are connected horizontally to the arch and the baffle by force transmission rods.

3. A prefabricated plain concrete thin-walled water tank as described in claim 1, characterized in that... The minimum length of the baffle is determined by calculating L≥M+2(R+D)(1-cos(90-α / 2)), where M is the minimum allowable distance between the arches at the corner of the pool; R is the outer radius of the arch; D is the distance between the arch feet on the left and right sides of the column wing plate; and α is the interior angle of the polygon at the corner.

4. The construction method of a prefabricated plain concrete thin-walled water tank as described in claim 1, characterized in that... Includes the following steps: S1. Design the water tank according to the usage requirements and construction site conditions, determine the shape, specifications and quantity of columns, baffles and rafts, and prefabricate them. S2, clean the construction base surface of the water tank, level and compact it; the bearing capacity and stability of the tank wall and anchorage location meet the requirements, and the settlement and deformation of the foundation in other locations must not endanger the tank wall and anchorage foundation; S3, pre-buried water intake pipe and sludge discharge pipe, the pipe opening inside the pool is at the same height as the bottom of the pool, and a vertical pipe to prevent sludge and sand is added to the water intake pipe inlet; guy ropes are installed around the pool to fix the anchor. S4. Lay the raft slab, erect supports and scaffolding, erect columns on the column raft slab, insert reinforced concrete limit blocks on both sides of the column base, connect the top of adjacent columns with struts and erect scissor braces; assemble the arch ring on the arch ring raft slab with masonry blocks, and use two different sizes of masonry blocks alternately on adjacent arch ring layers; install baffles on the baffle raft slab; connect the masonry blocks, baffles, and columns with force transmission rods to limit relative displacement; the pool wall is built in a step-by-step symmetrical cycle, maintaining synchronous rise in all directions in a balanced manner; S5. Install a mesh net and connect the hanging buckles to prevent the blocks or baffles from slipping off towards the water-facing side. S6, connect the guy rope between the top of the column and the anchor; connect the guy rope and guy rope symmetrically in batches, and tighten them in a step-by-step symmetrical cycle after all the guy ropes and guy ropes are connected; after the guy ropes and guy ropes are tightened, disassemble and remove the support and scaffolding. S7. Lay fine sand at the bottom of the pool, and thicken the fine sand layer at the corners between the pool wall and the bottom, and around the openings of the water intake pipe and the sludge discharge pipe; add hydraulic fabric pads around the pool wall, corners, and openings of the water intake pipe and the sludge discharge pipe; lay a welded hydraulic membrane, with the edges of the hydraulic membrane suspended and fixed to the top of the pool wall; use composite water tank joints or flanges to seal the water intake pipe and the sludge discharge pipe to the hydraulic membrane; lay a sunshade and waterproof cloth above the pull rope on the top of the pool to seal it, and open water permeable holes at the bottom of the low-hanging part of the sunshade and waterproof cloth.

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