Anti-bulge HDPE (high-density polyethylene) membrane reservoir structure

Abstract

The utility model relates to the technical field of reservoirs, in particular to an anti-bulge HDPE (high-density polyethylene) membrane reservoir structure which comprises a pool formed in a dam body, HDPE membrane layers are attached to all wall surfaces of the pool, a drainage mechanism is arranged on the inner bottom surface of the pool, and the drainage mechanism is positioned below the HDPE membrane layers; the exhaust pipes are designed on the peripheral slope surface of the reservoir, and the blind ditches and the blind pipes are longitudinally and transversely arranged at the bottom of the reservoir, so that air between a membrane and an earth dam and shallow underground water at the bottom of the reservoir are effectively discharged, and the phenomenon that the membrane swells when the water storage amount of the HDPE membrane reservoir is small or no water exists is prevented; an air inlet pipe for siphoning is designed, underground water under a pond bottom membrane is more effectively drained through the siphoning effect, the drainage efficiency is further improved, the device is suitable for an open-air water storage pond, and the problem that a conventional HDPE membrane water pond swells and cracks at present in a mountain land parcel pig farm is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water reservoirs, in particular to an anti-bulging HDPE film water reservoir structure. Background Art

[0002] In the operation of large-scale pig farms, the reliability and economy of the water supply system are crucial. The traditional single-line water supply method, which relies on the water supply from the water plant, has certain risks. Especially when the water plant is under maintenance or the water supply is cut off for other reasons, the operation of the pig farm may be seriously affected. Once the water supply is interrupted for more than this period, the pig farm will face water difficulties, and the self-water supply method of the HDPE membrane reservoir is used.

[0003] However, in actual use, it was found that the HDPE membrane would bulge after a period of use, which would eventually cause the membrane to crack and shallow groundwater to flow in, causing water pollution. This situation not only affected the normal operation of the pig farm, but also increased maintenance costs and water safety risks.

[0004] Analysis of the causes of the bulging phenomenon shows that under certain geological conditions, such as areas with abundant seasonal shallow groundwater, special attention should be paid to the design and construction of reservoirs. HDPE membrane reservoirs excavated at a soil depth of 6-12m may block the natural flow of shallow groundwater, causing groundwater to accumulate at the bottom of the reservoir and form pressure. With the arrival of the rainy season, the groundwater level rises and the pressure increases, which can easily lead to bulging of the HDPE membrane. In severe cases, it may even cause the membrane to crack, causing water pollution.

[0005] Therefore, in order to solve the above problems, we propose an anti-bulging HDPE membrane water storage tank structure. Utility Model Content

[0006] The utility model aims to solve the shortcomings of the prior art that HDPE membranes may bulge, eventually leading to membrane cracking, shallow groundwater inflow, and water pollution, and proposes an anti-bulging HDPE membrane water storage tank structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] Design an anti-bulging HDPE membrane water storage tank structure, including:

[0009] A water pool formed inside the dam body, with a HDPE film layer attached to each wall surface of the water pool, wherein a drainage mechanism is arranged on the inner bottom surface of the water pool, and the drainage mechanism is located below the HDPE film layer;

[0010] It also includes an exhaust mechanism arranged on the side of the pool, the tail end of the exhaust mechanism extends to below the HDPE film layer, and the top of the exhaust mechanism extends to above the dam body.

[0011] Furthermore, the drainage mechanism includes a blind ditch formed on the bottom of the pool, a blind pipe with a drainage hole is arranged inside the blind ditch, the interior of the dam body is connected to a drainage pipe, and one end of the blind pipe is connected to the drainage pipe.

[0012] Furthermore, the blind pipe includes a main blind pipe and a branch pipe, each of the branch pipes converges to the main blind pipe, and a filter layer is filled in the blind ditch, and an engineering cloth is placed between the filter layer and the HDPE film layer.

[0013] Furthermore, an air inlet pipe is installed on the dam body, the air inlet pipe is connected with the blind pipe, and one end of the drainage pipe is connected to the drop well.

[0014] Furthermore, the exhaust mechanism includes a plurality of exhaust pipes distributed on the four sides of the pool, a semicircular groove is opened on the side of the pool, and the exhaust pipe is embedded in the semicircular groove through a fastener.

[0015] Furthermore, a hardening layer is laid on the top of the dam body, and a protective layer is also arranged on the hardening layer.

[0016] Furthermore, a water retaining dam and a fence surrounding the water pool are arranged on the top of the dam body, and a water intercepting ditch is arranged on one side of the dam body close to the high slope point.

[0017] Furthermore, the bottom surface of the pool has a height difference of at least one meter.

[0018] The utility model proposes an anti-bulging HDPE membrane water reservoir structure, which has the following beneficial effects: in the utility model, exhaust pipes are designed on the slope surfaces around the water reservoir, and blind ditches and blind pipes are arranged vertically and horizontally on the bottom of the pool, so as to effectively discharge the air between the membrane and the earth dam and the shallow groundwater on the bottom of the pool, and prevent the HDPE membrane water reservoir from bulging when the water storage volume is small or there is no water; secondly, an air intake pipe for siphon is designed at the starting end of the blind ditch and the blind pipe, that is, in the soil layer at the foot of the water reservoir, and the siphon effect is used to more effectively drain the groundwater under the membrane at the bottom of the pool, thereby further improving the drainage efficiency; compared with the traditional reinforced concrete water reservoir, the HDPE membrane water reservoir saves more than 50% in construction cost, is suitable for open-air water reservoirs, and solves the problem of bulging and cracking of conventional HDPE membrane water reservoirs in pig farms in mountainous areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a top view of the utility model;

[0020] Figure 2It is a cross-sectional view of the utility model;

[0021] Figure 3 This is a schematic diagram of the drainage pipe structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the blind ditch structure of the utility model;

[0023] Figure 5 It is a schematic diagram of the hardening layer structure of the utility model.

[0024] In the figure: 1. dam body; 11. hardened layer; 12. protective layer; 13. retaining dam; 14. fence; 15. intercepting ditch; 2. pool; 3. HDPE membrane layer; 4. drainage mechanism; 41. blind ditch; 42. blind pipe; 43. drainage pipe; 44. filter layer; 45. engineering fabric; 46. air inlet pipe; 5. exhaust mechanism; 6. drop well. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-5 An embodiment of the utility model discloses an anti-bulging HDPE membrane water storage tank structure, specifically, the water storage tank structure comprises a water pool 2 formed inside a dam body 1, and a HDPE film layer 3 is attached to each wall surface of the water pool 2, wherein a drainage mechanism 4 is arranged on the inner bottom surface of the water pool 2, and the drainage mechanism 4 is located below the HDPE film layer 3;

[0027] It also includes an exhaust mechanism 5 arranged on the side of the pool 2 , the tail end of the exhaust mechanism 5 extends to below the HDPE film layer 3 , and the top of the exhaust mechanism 5 extends to above the dam body 1 .

[0028] To ensure the safety of drinking water in pig farms, water reservoirs should be far away from pig house air outlets, harmless treatment workshops, dead pig corpse pools and sewage treatment plants, as the air and soil in these areas may be polluted. When designing, water reservoirs should be located at high places and upwind outlets where the air is clean and away from pollution sources. Avoid arranging them near fan outlets and downwind outlets to ensure that the water body is not polluted.

[0029] In some embodiments, the drainage mechanism 4 in the utility model includes a blind ditch 41 formed on the bottom of the pool 2, a blind pipe 42 with a drainage hole is arranged inside the blind ditch 41, and a drainage pipe 43 is connected to the interior of the dam body 1, and one end of the blind pipe 42 is connected to the drainage pipe 43.

[0030] On the basis of the above embodiments, the blind pipe 42 in this embodiment includes a main blind pipe and a branch pipe, and each branch pipe converges to the main blind pipe. The blind ditch 41 is also filled with a filter layer 44. Preferably, the filter layer 44 in this embodiment is set as a gravel layer, and a geotextile is placed between the filter layer 44 and the HDPE film layer 3. Specifically, 200 thick 10-30 graded gravel is laid on the bottom of the ditch, and then the blind pipe 42 is placed and the slope is adjusted. After all the blind pipes 42 and the air intake pipe 46 are installed, they are covered with 10-30 graded gravel and leveled, and then a layer of geotextile with a width of 1 meter is laid. All gravel surface layers are covered with geotextiles. Because the gravel has edges and corners, the geotextile plays a role in protecting the HDPE film.

[0031] Furthermore, in the embodiment of the utility model, an air inlet pipe 46 is further installed on the dam body 1 , the air inlet pipe 46 is connected to the blind pipe 42 , and one end of the drainage pipe 43 is connected to the drop well 6 .

[0032] Specifically, the entire pipeline of the air inlet pipe 46, branch pipe, main blind pipe, drainage pipe 43 and drop well 6 in the utility model can form a siphon gravity drainage effect, so that the groundwater flowing into the blind pipe can be drained cleanly, and the groundwater at the bottom of the membrane will not rise and squeeze the air layer in the membrane folds, and the membrane bulging phenomenon will not occur. In order to increase the water flow rate, the main blind pipe is designed with a slope of 0.5%, and flows from the water outlet to the drainage pipe outside the pool.

[0033] In summary, in order to prevent the HDPE membrane from bulging, the utility model adopts a blind ditch 41 and a blind pipe 42 with filtering and water guiding functions. The blind ditch 41 and the blind pipe are arranged from the high slope point to the low slope point, and are connected with the drainage pipe 43 of the dam body 1, the drop well 6 outside the reservoir, and the drainage pipe 42 to discharge the shallow groundwater under the membrane. The branch pipe is perpendicular to the main blind pipe and arranged in two rows, one row at the foot of the dam body 1 at the high slope point, and the other row in the middle of the pool 2. All water bubbling points are connected by branch pipes. The main blind pipe is made of De200Pvc water supply pipe, leaving part of the arc length for drainage, and the rest of the part is drilled. The branch pipe is made of De160Pvc water supply pipe, and the manufacturing method is similar to the main blind pipe. When installing, it is necessary to ensure that the drainage arc length is correctly placed. Geotextile is laid on the blind pipe and the gravel surface layer to protect the HDPE membrane. This design can effectively solve the problem of groundwater discharge under the reservoir membrane and prevent the occurrence of membrane bulging.

[0034] On the basis of the above embodiments, the exhaust mechanism 5 in the utility model includes a plurality of exhaust pipes distributed on the four sides of the pool 2, a semicircular groove is opened on the side of the pool 2, and the exhaust pipe is embedded in the semicircular groove through fasteners.

[0035] Specifically, on the inner slope of the dam body 1, the flattened and compacted pool 2 is designed with an exhaust pipe at a spacing of 25 meters around the pool 2. It is made of De75Pvc water supply pipe, and the pipe wall is drilled in advance with a hole diameter of 10 mm. 6 holes are drilled in each circle of the pipe, and 6 holes are drilled every 0.5 meters along the length of the pipe. The exhaust pipe is placed from the top to the bottom of the pool along the slope, and placed in a semicircular groove with a diameter of 100 mm dug in advance on the slope, and the pipe is fixed to the earth dam every 1 meter with a No. 6 steel bar U-shaped clamp. The top of the exhaust pipe is 500 mm higher than the top surface of the pool, and an elbow is provided at the top to prevent rainwater from entering. When the air in the interlayer between the HDPE membrane and the earth dam is heated and squeezed, it is discharged through the holes in the exhaust pipe to ensure the effective discharge of the air interlayer. In addition, the HDPE membrane pool specifications and standards are strictly followed during the construction process to ensure the flatness of the HDPE membrane laying, reduce the wrinkles of the HDPE membrane, and improve the construction quality.

[0036] In some embodiments, a hardened layer 11 is laid on the top of the dam body 1 in the utility model, and a protective layer 12 is also arranged on the hardened layer 11. Specifically, the hardened layer 11 described in this embodiment adopts 70mm thick C30 reinforced fine stone concrete, and No. 4 steel mesh can be configured inside it. The protective layer 12 is a 0.5 thick HDPE film, and its purpose is to protect the dam body 1.

[0037] Furthermore, in the utility model, a water retaining dam 13 and a fence 14 surrounding the pool 2 are also provided on the top of the dam body 1, wherein the water retaining dam 13 is designed to prevent the intercepting ditch from overflowing into the pool 2 due to untimely drainage during heavy rain. Meanwhile, in view of the height difference of the pool 2 and the smoothness of the HDPE film, the pool 2 is protected by adopting the fence 14 in this embodiment. Meanwhile, a life buoy and a life rope are placed at both ends of the pool 2, and the life rope is tied to the fence 14, so that the person who falls into the water can grab the life rope and climb ashore, thereby solving the safety problem of workers falling into the water.

[0038] In addition, a ditches 15 is provided on one side of the dam body 1 close to the high slope point in the utility model, and the ditches 15 are designed to prevent rainwater, muddy water and garbage around the HDPE membrane water reservoir from polluting the water body of the water reservoir.

[0039] It should be noted that in order to drain the groundwater under the membrane of the HDPE water storage tank by gravity without using a downhole pump, the bottom surface of the water tank 2 has a height difference of at least one meter. The height difference can meet the design conditions for draining the groundwater under the membrane by gravity. Through this type of design, blind pipes and siphon technology are reasonably arranged in the pool and the groundwater can be directly discharged by relying on the height difference gravity, without the need for pumping and wasting electricity.

[0040] In the utility model, exhaust pipes are designed on the slope surfaces around the water reservoir, and blind ditches and blind pipes are arranged vertically and horizontally on the bottom of the pool, so as to effectively discharge the air between the membrane and the earth dam and the shallow groundwater on the bottom of the pool, and prevent the HDPE membrane water reservoir from bulging when the water storage volume is small or there is no water. Secondly, an air intake pipe for siphon is designed at the starting end of the blind ditch and the blind pipe, that is, in the soil layer at the foot of the water reservoir dam, so as to utilize the siphon effect to more effectively drain the groundwater under the membrane at the bottom of the pool, and further improve the drainage efficiency. Compared with the traditional reinforced concrete water reservoir, the HDPE membrane water reservoir saves more than 50% in construction cost, is suitable for open-air water reservoirs, and solves the problem of bulging and cracking of conventional HDPE membrane water pools in pig farms in mountainous areas.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-bulging HDPE membrane water storage tank structure, characterized in that: include: A water pool (2) formed inside a dam body (1), with a HDPE film layer (3) attached to each wall surface of the water pool (2), wherein a drainage mechanism (4) is provided on the inner bottom surface of the water pool (2), and the drainage mechanism (4) is located below the HDPE film layer (3); It also includes an exhaust mechanism (5) arranged on the side of the pool (2), the tail end of the exhaust mechanism (5) extends to below the HDPE film layer (3), and the top of the exhaust mechanism (5) extends to above the dam body (1).

2. The anti-bulging HDPE membrane water reservoir structure according to claim 1, characterized in that: The drainage mechanism (4) comprises a blind ditch (41) formed on the bottom of the pool (2), a blind pipe (42) having a drainage hole is arranged inside the blind ditch (41), a drainage pipe (43) is connected to the inside of the dam body (1), and one end of the blind pipe (42) is connected to the drainage pipe (43).

3. The anti-bulging HDPE membrane water reservoir structure according to claim 2, characterized in that: The blind pipe (42) comprises a main blind pipe and branch pipes, each of the branch pipes converges into the main blind pipe. A filter layer (44) is also filled in the blind ditch (41), and an engineering fabric (45) is placed between the filter layer (44) and the HDPE film layer (3).

4. The anti-bulging HDPE membrane water reservoir structure according to claim 2, characterized in that: An air inlet pipe (46) is also installed on the dam body (1), the air inlet pipe (46) is connected to the blind pipe (42), and one end of the drainage pipe (43) is connected to the drop well (6).

5. The anti-bulging HDPE membrane water reservoir structure according to claim 1, characterized in that: The exhaust mechanism (5) comprises a plurality of exhaust pipes distributed on the four sides of the pool (2). A semicircular groove is provided on the side of the pool (2), and the exhaust pipe is embedded in the semicircular groove via a fastener.

6. The anti-bulging HDPE membrane water reservoir structure according to claim 1, characterized in that: A hardening layer (11) is laid on the top of the dam body (1), and a protective layer (12) is also arranged on the hardening layer (11).

7. The anti-bulging HDPE membrane water reservoir structure according to claim 1, characterized in that: A water retaining dam (13) and a fence (14) surrounding the pool (2) are also provided on the top of the dam body (1), and a water intercepting ditch (15) is also provided on the side of the dam body (1) close to the high slope point.

8. An anti-bulging HDPE membrane water reservoir structure according to any one of claims 1-7, characterized in that: The bottom surface of the pool (2) has a height difference of at least one meter.

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