Leachate tank and construction method thereof

Abstract

The invention discloses a leachate tank which comprises side walls, a tank bottom plate and a tank top plate, an in-tank liquid storage area is defined by the side walls, the tank bottom plate and the tank top plate, the in-tank liquid storage area is used for storing leachate, the inner wall of the in-tank liquid storage area is provided with a first waterproof and anti-seepage coating, the side walls comprise the overground side wall and the underground side wall, and the first waterproof and anti-seepage coating is arranged on the inner wall of the in-tank liquid storage area. The underground side wall is slightly higher than the ground; the overground side wall and the pool top plate have the same structure; the overground side wall comprises a structural layer, a connecting layer and a heat preservation layer which are sequentially arranged from inside to outside, and the connecting layer is used for connecting the structural layer and the heat preservation layer; the underground side wall comprises a structural layer, a second waterproof and anti-seepage coating, a connecting layer and a heat preservation layer which are sequentially arranged from inside to outside. The pool bottom plate comprises a structural layer, a first rigid layer, a second waterproof anti-seepage coating and a second rigid layer which are sequentially arranged from top to bottom. According to the anti-corrosion heat-preservation environment-friendly construction method for the filtrate pool, the anti-corrosion and anti-seepage performance and the heat preservation effect of the filtrate pool can be guaranteed.

Description

Technical Field

[0001] The invention relates to the field of leachate pool construction, and in particular to a leachate pool and a construction method thereof. Background Art

[0002] As a commonly used large-scale pool for collecting garbage liquid, leachate pools are widely used in various domestic waste incineration power generation and environmental protection projects. Leachate pools can prevent pollutants from entering groundwater and the surrounding environment, thereby reducing the impact on the ecosystem and water resources.

[0003] The capacity and depth of the leachate pool should be designed according to the scale of the landfill, the amount of precipitation and the amount of leachate produced. The important function of the leachate pool is to collect liquid garbage leachate and convert it into water quality discharge that meets national standards. The Cl (chloride ion) content in liquid garbage water is about 2500-3000 mg / L, which is highly corrosive to the leachate pool wall. Therefore, the leachate pool needs to have anti-corrosion properties.

[0004] Since the leachate in the leachate pool may be affected by low temperatures, causing the water to freeze, which will not only hinder the treatment and discharge of the leachate, but may also cause damage to the equipment in the pool. Therefore, the leachate pool also needs to have a heat preservation function. Summary of the invention

[0005] The purpose of the present invention is to provide a leachate pool and a construction method thereof, wherein the leachate pool and the construction method thereof can ensure the anti-corrosion and anti-seepage performance and the heat preservation effect of the leachate pool.

[0006] In order to achieve the above-mentioned object, the present invention provides a leachate pool, the leachate pool comprises a side wall, a pool bottom plate and a pool top plate, the side wall, the pool bottom plate and the pool top plate enclose a pool internal liquid storage area, the pool internal liquid storage area is used to store leachate, the inner wall of the pool internal liquid storage area is provided with a first waterproof and anti-seepage coating, the side wall comprises an above-ground side wall and an underground side wall, the height of the underground side wall is slightly higher than the ground, and the above-ground side wall has the same structure as the pool top plate;

[0007] The above-ground side wall comprises a structural layer, a connecting layer and a thermal insulation layer arranged in sequence from the inside to the outside, wherein the connecting layer is used to connect the structural layer and the thermal insulation layer;

[0008] The underground side wall comprises the structural layer, the second waterproof and anti-seepage coating, the connecting layer and the thermal insulation layer which are arranged in sequence from the inside to the outside;

[0009] The pool bottom plate includes the structural layer, the first rigid layer, the second waterproof and anti-seepage coating layer and the second rigid layer which are arranged in sequence from top to bottom.

[0010] Preferably, the first waterproof and anti-seepage coating is configured as a permeable crystalline material layer;

[0011] The second waterproof and anti-seepage coating includes an interface agent layer, a polyurethane waterproof coating layer, and a HDPE film arranged in sequence from the inside to the outside. The interface agent layer is located between the structural layer and the polyurethane waterproof coating layer to increase the adhesion of the polyurethane waterproof coating layer.

[0012] Preferably, the first rigid layer is configured as a fine stone concrete layer, and the fine stone concrete is used to protect the structural layer located on the pool bottom plate;

[0013] The second rigid layer includes a first mortar layer and a concrete cushion layer located below the first mortar layer.

[0014] The present invention also provides a construction method of the leachate pool, the construction method comprising:

[0015] Step 1: First, construct all parts of the pool bottom plate except the structural layer;

[0016] Step 2: constructing the structural layer to build the overall framework of the leachate pool;

[0017] Step 3: constructing the underground side wall and the above-ground side wall based on the structural layer;

[0018] Step 3: construct the pool roof.

[0019] Preferably, in step 1, the pool bottom plate is constructed in order from bottom to top, wherein the concrete cushion layer is rammed and applied simultaneously to ensure smoothness;

[0020] The first mortar layer is arranged above the concrete cushion layer for leveling;

[0021] After the second waterproof and anti-seepage coating is constructed, the first rigid layer is constructed.

[0022] Preferably, in step 2, the structural layer is constructed above the first rigid layer.

[0023] Preferably, within the height range of the underground side wall, the first waterproof and anti-seepage coating and the second waterproof and anti-seepage coating are constructed based on the inner wall and the outer wall of the structural layer respectively;

[0024] The connecting layer and the thermal insulation layer are constructed based on the second waterproof and anti-seepage coating.

[0025] Preferably, a circle of solid concrete brick layer is provided outside the insulation layer of the underground side wall for protecting the insulation layer, and a backfill layer is provided outside the solid concrete brick layer.

[0026] Preferably, in step 2, the concrete solid brick layer is constructed close to the end of the pool bottom plate, and the concrete solid brick layer and the backfill layer are constructed based on the bearing layer below the concrete cushion layer.

[0027] Preferably, the connection layer is provided as a modified asphalt waterproofing membrane, and the modified asphalt waterproofing membrane of the above-ground side wall and the modified asphalt waterproofing membrane of the underground side wall are provided with an overlapping connection;

[0028] The pool bottom plate is also provided with the modified asphalt waterproofing membrane, and the modified asphalt waterproofing membrane realizes the sealing of the leachate pool.

[0029] According to the above technical solution, the leachate pool of the present invention includes an inner cavity capable of accommodating garbage leachate, and a first waterproof and anti-seepage coating is provided on the inner wall of the inner cavity to control the leakage of the leachate and protect the surrounding environment.

[0030] The structure adopts anti-seepage and waterproof concrete side walls, using anti-seepage concrete with an anti-seepage grade of P8. By setting up this structural layer, it can provide a rigid support structure for the leachate pool while improving the anti-seepage performance of the leachate pool body and preventing the leachate from seeping out.

[0031] In order to achieve a better anti-seepage effect on the leachate, the underground side walls and the bottom plate of the leachate pool are provided with a second waterproof and anti-seepage coating, so that the underground side walls and the bottom plate of the pool can have better waterproof and anti-seepage effects, effectively preventing the leakage of leachate into the environmental soil. The height of the underground side walls is set to be slightly higher than the ground height, so that the underground part of the leachate pool is provided with effective waterproof and anti-seepage treatment, eliminating the problem of leachate leakage into the soil.

[0032] The leachate pool is arranged in a manner that one part is located underground and the other part is located above ground. On the one hand, the height of the leachate pool can be reduced, making it more convenient to use. On the other hand, the leachate pool located in the underground part can naturally obtain a better thermal insulation effect.

[0033] At the same time, the side walls and roof of the leachate pool are provided with an insulation layer, so that the liquid storage area in the pool can achieve a better insulation effect and prevent the water from freezing in cold seasons.

[0034] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0036] Figure 1It is a schematic diagram of the structure of a leachate tank;

[0037] Figure 2 It is a schematic diagram of the structure of an underground side wall;

[0038] Figure 3 It is a schematic diagram of the connection between the underground side wall and the above-ground side wall;

[0039] Figure 4 It is a schematic diagram of the structure of a pool bottom plate;

[0040] Figure 5 It is a structural schematic diagram of a pool roof.

[0041] Description of Reference Numerals

[0042] 1Bearing layer 2Second mortar layer

[0043] 3. Liquid storage area 41 in the pool: first waterproof and anti-seepage coating

[0044] 51 above ground side wall 52 underground side wall

[0045] 61 structural layer 62 connection layer

[0046] 63 insulation layer 81 first rigid layer

[0047] 82 first mortar layer 42 interface agent layer

[0048] 43 polyurethane waterproof coating layer 44 HDPE membrane

[0049] 45 modified asphalt waterproof membrane 83 concrete cushion

[0050] 53 concrete solid brick layer 54 backfill layer

[0051] 46 second waterproof and anti-seepage coating 47 overlapping connection DETAILED DESCRIPTION

[0052] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0053] In the present invention, unless otherwise stated, directional words such as "inside, outside, inner wall" contained in the terms merely represent the orientation of the terms in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms.

[0054] See also Figure 1-5A leachate pool, the leachate pool comprises side walls, a pool bottom plate and a pool top plate 2, the side walls, the pool bottom plate and the pool top plate 2 enclose a hollow pool storage area 3, the pool storage area 3 is used to store leachate, the inner wall of the pool storage area 3 is provided with a first waterproof and anti-seepage coating 41, the side walls comprise an above-ground side wall 51 and an underground side wall 52, the height of the underground side wall 52 is slightly higher than the ground height, and the above-ground side wall 51 has the same structure as the pool top plate 2;

[0055] The above-ground side wall 51 includes a structural layer 61, a connecting layer 62 and a thermal insulation layer 63 arranged in sequence from the inside to the outside, and the connecting layer 62 is used to connect the structural layer 61 and the thermal insulation layer 63;

[0056] The underground side wall 52 includes a structural layer 61, a second waterproof and anti-seepage coating 46, a connecting layer 62 and a thermal insulation layer 63 arranged in sequence from the inside to the outside;

[0057] The pool bottom plate includes a structural layer 61, a first rigid layer 81, a second waterproof and anti-seepage coating 46 and a second rigid layer arranged in sequence from top to bottom.

[0058] Through the implementation of the above technical solution, the leachate pool includes an inner cavity 3 capable of accommodating garbage leachate, and a first waterproof and anti-seepage coating 41 is provided on the inner wall of the inner cavity 3 to control the leakage of the leachate and protect the surrounding environment.

[0059] The structural layer 61 adopts anti-seepage and waterproof concrete side walls, using anti-seepage concrete with an anti-seepage grade of P8. By setting up the structural layer 61, it is possible to provide a rigid support structure for the leachate pool while improving the anti-seepage performance of the leachate pool body and preventing the leachate from seeping out.

[0060] In order to achieve a better anti-seepage effect on the leachate, the underground side wall 52 and the bottom plate of the leachate pool are both provided with a second waterproof and anti-seepage coating 46, so that the underground side wall 52 and the bottom plate of the pool can have a better waterproof and anti-seepage effect, effectively preventing the leakage of leachate into the environmental soil. The height of the underground side wall 52 is set to be slightly higher than the ground height, so that the underground part of the leachate pool is provided with effective waterproof and anti-seepage treatment, eliminating the problem of leachate leakage into the soil.

[0061] The leachate pool is arranged in a manner that one part is located underground and the other part is located above ground. On the one hand, the height of the leachate pool can be reduced, making it more convenient to use. On the other hand, the leachate pool located in the underground part can naturally obtain a better thermal insulation effect.

[0062] At the same time, the side walls and the top plate 2 of the leachate pool are both provided with an insulation layer 63, so that the liquid storage area 3 in the pool can achieve a better insulation effect and prevent the water from freezing in cold seasons.

[0063] In this manner, preferably, the first waterproof and impermeable coating 41 is provided as a permeable crystalline material layer;

[0064] The second waterproof and anti-seepage coating 46 includes an interface agent layer 42, a polyurethane waterproof coating layer 43, a HDPE membrane 44 and a modified asphalt waterproof membrane 45 which are arranged in sequence from the inside to the outside. The interface agent layer 42 is located between the structural layer 61 and the polyurethane waterproof coating layer 43 to increase the adhesion of the polyurethane waterproof coating layer 43.

[0065] The first waterproof and anti-seepage coating 41 is a permeable crystal material layer obtained by brushing a cement-based permeable crystal waterproof material at a temperature of 1.5 kg / m 2 The construction requirements are to apply the cement-based penetrating crystallization waterproof material twice to obtain a penetrating crystallization material layer with a thickness of approximately 100 mm.

[0066] Before applying the cement-based penetrating crystallization waterproof material, the inner wall of the structural layer 61 needs to be polished first to ensure that the construction surface is flat; during construction, since it is difficult to detect the thickness of the coating, it is recommended to set the cement-based penetrating crystallization waterproof material to different colors, and apply two colors of cement-based penetrating crystallization waterproof material twice to achieve the measurement of the completed painting work. Preferably, the first color is used for the first coating, and when the first coating of the cement-based penetrating crystallization waterproof material is dried, the cement-based penetrating crystallization waterproof material is set to the second color, so that after the second coating of the cement-based penetrating crystallization waterproof material is completed, it can be intuitively judged that the cement-based penetrating crystallization waterproof material has been coated twice, which is convenient for the management of on-site construction.

[0067] Preferably, since the first waterproof and anti-seepage coating 41 is in direct contact with the leachate in the leachate pool, it is recommended to select a permeable cement crystalline material with better waterproof and anti-seepage effect, so that the first waterproof and anti-seepage coating 41 can directly prevent the leachate from corroding the pool wall.

[0068] In this embodiment, preferably, the first rigid layer 81 is set as a fine stone concrete layer, and the fine stone concrete layer is used to protect the structural layer 61 located on the pool bottom plate;

[0069] The second rigid layer includes a first mortar layer 82 and a concrete pad layer 83 located below the first mortar layer 82 .

[0070] A bearing layer 1 is also provided below the concrete cushion layer 83. The bearing layer 1 and the second rigid layer can provide reliable rigid support to the structural layer 61 of the pool bottom plate, while also ensuring the levelness of the bottom of the leachate pool.

[0071] The concrete cushion layer 83 and the bearing layer 1 constitute a rigid support for the structural layer 61 of the pool bottom plate. The first mortar layer 82 is used to level the upper surface of the concrete cushion layer 83 , thereby ensuring the horizontality of the structural layer 61 .

[0072] A leachate pool construction method, the construction method comprising:

[0073] Step 1: First, construct all parts of the pool bottom plate except the structural layer 61;

[0074] Step 2: constructing the structural layer 61 to build the overall framework of the leachate pool;

[0075] Step 3: constructing the underground side wall 52 and the above-ground side wall 51 based on the structural layer 61;

[0076] Step 3: construct pool top plate 2.

[0077] First, the pool bottom plate is constructed. After the first rigid layer 81 is constructed, the structural layer 61 can be constructed on the basis of the first rigid layer 81. The pool bottom plate, the pool top plate 2 and the structural layer 61 of the side wall can be constructed at one time. After the construction of these structural layers 61 is completed, the overall framework of the leachate pool is completed. Then, based on the overall framework, the first waterproof and anti-seepage coating 41 can be applied to the inner wall of the structural layer 61. At the same time, in order to speed up the construction progress, while constructing the inner wall of the structural layer 61, the outer wall of the structural layer 61 can also be constructed at the same time. The underground side wall 52 can be constructed first, or the underground side wall 52 and the ground side wall 51 can be constructed at the same time.

[0078] After the side wall construction is completed, the pool top plate 2 can be constructed.

[0079] In this method, preferably, in step 1, the pool bottom plate is constructed in order from bottom to top, wherein the concrete cushion layer 83 is rammed and applied to ensure smoothness;

[0080] The first mortar layer 82 is disposed above the concrete cushion layer 83 for leveling;

[0081] After the second waterproof and anti-seepage coating 46 is constructed, the first rigid layer 81 is constructed.

[0082] Since the structural layers 61 are stacked upward based on the first rigid layer 81, the first rigid layer 81 bears the load brought by the weight of the leachate pool and the weight of the leachate in the liquid storage area 3 in the pool. The second waterproof and anti-seepage coating 46 is arranged below the first rigid layer 81, so that through the protection of the first rigid layer 81, it is possible to prevent the load in the leachate pool from acting on the second waterproof and anti-seepage coating 46 and destroying the reliability of the second waterproof and anti-seepage coating 46.

[0083] The structural layer 61 uses an impermeable and waterproof concrete side wall. The impermeable and waterproof concrete side wall uses impermeable concrete with an impermeability grade of P8. By setting the structural layer 61, it is possible to provide a rigid support structure for the leachate pool while improving the impermeability of the leachate pool body and preventing the leachate from seeping out.

[0084] The first rigid layer 81 is set to be C30 fine stone concrete with a thickness of about 50 mm. The first rigid layer 81 serves as a rigid protective layer to protect the pool bottom plate.

[0085] A second waterproof and anti-seepage coating 46 is disposed below the first rigid layer 81 to enhance the waterproof and anti-seepage effect. The second waterproof and anti-seepage coating 46 includes an interface agent layer, a polyurethane waterproof coating layer and a HDPE film.

[0086] The interface agent layer is obtained by brushing the interface agent layer. After brushing the interface agent, an adhesive film can be formed to increase the adhesion of the waterproof coating.

[0087] Then, the polyurethane waterproof coating can be applied to the outer wall of the pool body to increase the anti-seepage performance and prevent the infiltration of the leachate. Preferably, the polyurethane waterproof coating is applied twice, and the thickness after the construction is completed is ≥1.5mm.

[0088] The height of the second waterproof and anti-seepage coating 46 is slightly higher than the outdoor ground mark, and the height of the second waterproof and anti-seepage coating 46 from the ground is about 0.3m.

[0089] The HDPE membrane is an anti-seepage coating, which can increase the anti-seepage performance of the outer wall of the pool body and prevent the infiltration of leachate. The thickness of the HDPE membrane is set to about 2 mm.

[0090] Finally, a salt-alkali resistant polymer modified asphalt waterproofing membrane is arranged below the second waterproof and anti-seepage coating 46. The salt-alkali resistant polymer modified asphalt waterproofing membrane can increase the anti-seepage performance of the pool bottom plate and prevent the seepage of the leachate.

[0091] The first mortar layer 82 is set to be a 1:3 waterproof mortar with a thickness of about 20 mm, which is used to level the concrete cushion layer 83.

[0092] The concrete cushion layer 83 is set to be a C15 concrete cushion layer with a thickness of about 100 mm, and it is rammed and smoothed as it is constructed to ensure smoothness.

[0093] In this embodiment, preferably, in step 2 , the structural layer 61 is constructed above the first rigid layer 81 .

[0094] With the support of the second rigid layer, the first rigid layer 81 has a very stable foundation. Constructing the structural layer 61 on the first rigid layer 81 can ensure the stability of the foundation of the structural layer 61. Moreover, the first rigid layer 81 can also bear the load in the leachate pool, thereby ensuring the reliability of the leachate pool during use.

[0095] In this embodiment, preferably, within the height range of the underground side wall 52, the first waterproof and anti-seepage coating 41 and the second waterproof and anti-seepage coating 46 are constructed on the inner wall and the outer wall of the structural layer 61 respectively;

[0096] The second waterproof and anti-seepage coating 46 is adhered to construct the connecting layer 62 and the thermal insulation layer 63.

[0097] Since the underground side wall 52 is located underground and can be in direct contact with the soil, it is necessary to construct a first waterproof and anti-seepage coating 41 and a second waterproof and anti-seepage coating 46 on the inner wall and outer wall of the structural layer 61 of the underground side wall 52 respectively; in addition, the effect of the thermal insulation layer 63 enables the leachate pool to not only effectively prevent leakage of the leachate, but also to keep the leachate pool warm.

[0098] The inner wall of the structural layer 61 of the underground side wall 52 is provided with a first waterproof and anti-seepage coating 41 which is a permeable crystal material layer obtained by brushing a cement-based permeable crystal waterproof material at a rate of 1.5 kg / m 2 For construction requirements, the cement-based penetrating crystallization waterproof material is applied. Before applying the cement-based penetrating crystallization waterproof material, the inner wall of the structural layer 61 needs to be polished first to ensure a smooth construction surface; apply the cement-based penetrating crystallization waterproof material twice to obtain a penetrating crystallization material layer with a thickness of approximately 100 mm.

[0099] During construction, since it is difficult to detect the thickness of the coating, it is recommended to use cement-based penetrating crystalline waterproof materials of different colors for painting to achieve measurement of the completed painting work. Preferably, the first color is used for the first painting, and when the first painting of the cement-based penetrating crystalline waterproof material is dried, the cement-based penetrating crystalline waterproof material is set to the second color, so that after the second painting of the cement-based penetrating crystalline waterproof material is completed, it can be intuitively judged that the cement-based penetrating crystalline waterproof material has been painted twice, which is convenient for on-site construction management.

[0100] Preferably, since the first waterproof and anti-seepage coating 41 is in direct contact with the leachate in the leachate pool, it is recommended to select a permeable cement crystalline material with better waterproof and anti-seepage effect, so that the first waterproof and anti-seepage coating 41 can directly prevent the leachate from corroding the pool wall.

[0101] The structural layer 61 adopts anti-seepage waterproof concrete side walls, using anti-seepage concrete with an anti-seepage grade of P8. By setting up the structural layer 61, it is possible to provide a rigid support structure for the leachate pool while improving the anti-seepage performance of the leachate pool body and preventing the leachate from seeping out.

[0102] The second waterproof and anti-seepage coating 46 includes an interface agent layer, a polyurethane waterproof coating layer and a HDPE film.

[0103] The interface agent layer is obtained by brushing the interface agent layer. After brushing the interface agent, an adhesive film can be formed to increase the adhesion of the waterproof coating.

[0104] Then, the polyurethane waterproof coating can be applied to the outer wall of the pool body to increase the anti-seepage performance and prevent the infiltration of the leachate. Preferably, the polyurethane waterproof coating is applied twice, and the thickness after the construction is completed is ≥1.5mm.

[0105] The height of the second waterproof and anti-seepage coating 46 is slightly higher than the outdoor ground mark, and the height of the second waterproof and anti-seepage coating 46 from the ground is about 0.3m.

[0106] The HDPE membrane is an anti-seepage coating, which can increase the anti-seepage performance of the outer wall of the pool body and prevent the infiltration of leachate. The thickness of the HDPE membrane is set to about 2 mm.

[0107] Preferably, the connection layer 62 is configured as a salt-alkali resistant polymer modified asphalt waterproof membrane to increase the anti-seepage performance of the outer wall of the pool body and prevent the outflow of leachate, while also providing an installation surface for the installation of the thermal insulation layer 63.

[0108] The insulation layer 63 is an extruded polystyrene board having a density of 35 kg / m 3 , the thermal conductivity is 0.032W / (mk), which can be used as a heat preservation material to provide heat preservation for the leachate pool in cold areas and ensure the normal operation of the leachate pool. The thickness of the heat preservation layer 63 is set to 150mm.

[0109] In this embodiment, preferably, a circle of solid concrete brick layer 53 is provided outside the thermal insulation layer 63 for protecting the thermal insulation layer 63 , and a backfill layer 54 is provided outside the solid concrete brick layer 53 .

[0110] The thickness of the concrete solid brick layer 53 is set to 120 mm, and it is made of MU15 concrete solid bricks, which can protect the extruded polystyrene board in the insulation layer 63 and resist the side soil pressure.

[0111] The backfill layer 54 needs to be backfilled with 1m thick clay soil along the concrete solid brick layer 53. During the construction process, the backfill should be layered and compacted, and the compaction coefficient should be not less than 0.94. The backfilled clay soil with compaction can protect the pool body. Loose soil and expansive soil should not be used for backfilling.

[0112] In this embodiment, preferably, in step 2, the concrete solid brick layer 53 is constructed close to the end of the pool bottom plate, and the concrete solid brick layer 53 and the backfill layer 54 are constructed based on the bearing layer 1 below the concrete cushion layer 83.

[0113] The concrete solid brick layer 53 is arranged at the end of the first rigid layer 81, and does not apply pressure to the first rigid layer 81. At the same time, it can also provide lateral thrust to the entire pool bottom plate at the end of the pool bottom plate to improve the stability of the leachate pool during operation, and further improve the rigidity of the pool bottom plate.

[0114] In this embodiment, preferably, the connecting layer 62 is configured as a modified asphalt waterproofing membrane 45, the modified asphalt waterproofing membrane 45 of the above-ground side wall 51 and the modified asphalt waterproofing membrane 45 of the underground side wall 52 are provided with an overlapping connection 47, and the pool bottom plate is also provided with a modified asphalt waterproofing membrane 45, and the modified asphalt waterproofing membrane 45 realizes the sealing of the leachate pool.

[0115] Setting the connection layer 62 as a modified asphalt waterproofing membrane 45 can not only meet the installation requirements of the extruded polystyrene board, but also play a role in waterproofing and anti-seepage. Moreover, by setting the modified asphalt waterproofing membrane 45 around the outer surface of the leachate pool to cover it, the sealing effect of the leachate pool can be achieved.

[0116] Since the width of the above-ground side wall 51 is smaller than that of the underground side wall 52, the modified asphalt waterproofing membrane 45 of the above-ground side wall 51 and the modified asphalt waterproofing membrane 45 of the underground side wall 52 are offset in the horizontal direction and need to be overlapped. During the actual construction process, the modified asphalt waterproofing membrane 45 of the underground side wall 52 is brushed upward more so that the modified asphalt waterproofing membrane 45 can form an overlapping connection 47 with the modified asphalt waterproofing membrane 45 above, and the upper modified asphalt waterproofing membrane 45 and the lower modified asphalt waterproofing membrane 45 are sealedly connected through the overlapping connection 47.

[0117] Preferably, the modified asphalt waterproofing membrane 45 on the pool roof and the modified asphalt waterproofing membrane 45 on the top of the above-ground side wall 51 can also be sealed and connected in this way.

[0118] The outer surface of the leachate pool exposed on the ground is covered with a second mortar layer 2 , which is configured as a crack-resistant mortar and can protect the extruded polystyrene board in the thermal insulation layer 63 .

[0119] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0120] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0121] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A leachate pool, characterized in that: The leachate pool comprises side walls, a pool bottom plate and a pool top plate, wherein the side walls, the pool bottom plate and the pool top plate enclose a pool liquid storage area (3), wherein the pool liquid storage area (3) is used to store leachate, wherein the inner wall of the pool liquid storage area (3) is provided with a first waterproof and anti-seepage coating (41), wherein the side walls comprise an above-ground side wall (51) and an underground side wall (52), wherein the height of the underground side wall (52) is slightly higher than the ground, and the above-ground side wall (51) has the same structure as the pool top plate; The above-ground side wall (51) comprises a structural layer (61), a connecting layer (62) and a thermal insulation layer (63) which are arranged in sequence from the inside to the outside, and the connecting layer (62) is used to connect the structural layer (61) and the thermal insulation layer (63); The underground side wall (52) comprises the structural layer (61), the second waterproof and anti-seepage coating (46), the connecting layer (62) and the thermal insulation layer (63) which are arranged in sequence from the inside to the outside; The pool bottom plate comprises the structural layer (61), a first rigid layer (81), the second waterproof and impermeable coating (46) and a second rigid layer which are arranged in sequence from top to bottom.

2. The leachate pool according to claim 1, characterized in that: The first waterproof and anti-seepage coating (41) is configured as a permeable crystalline material layer; The second waterproof and anti-seepage coating (46) comprises an interface agent layer (42), a polyurethane waterproof coating layer (43), and a HDPE film (44) which are arranged in sequence from the inside to the outside. The interface agent layer (42) is located between the structural layer (61) and the polyurethane waterproof coating layer (43) and is used to increase the adhesion of the polyurethane waterproof coating layer (43).

3. The leachate pool according to claim 2, characterized in that: The first rigid layer (81) is configured as a fine stone concrete layer, and the fine stone concrete is used to protect the structural layer (61) located on the pool bottom plate; The second rigid layer includes a first mortar layer (82) and a concrete cushion layer (83) located below the first mortar layer (82).

4. A method for constructing a leachate pool according to claim 3, characterized in that: The construction method comprises: Step 1, first constructing all parts of the pool bottom plate except the structural layer (61); Step 2: constructing the structural layer (61) to build the overall framework of the leachate pool; Step 3: constructing the underground side wall (52) and the above-ground side wall (51) based on the structural layer (61); Step 3: construct the pool roof.

5. The construction method according to claim 4, characterized in that: In step 1, the pool bottom plate is constructed in order from bottom to top, wherein the concrete cushion layer (83) is rammed and smoothed as it is applied to ensure smoothness; The first mortar layer (82) is arranged above the concrete cushion layer (83) and is used for leveling; After the second waterproof and anti-seepage coating (46) is constructed, the first rigid layer (81) is constructed.

6. The construction method according to claim 4, characterized in that: In step 2, the structural layer (61) is constructed on top of the first rigid layer (81).

7. The construction method according to claim 6, characterized in that: Within the height range of the underground side wall (52), the first waterproof and anti-seepage coating (41) and the second waterproof and anti-seepage coating (46) are respectively constructed based on the inner wall and the outer wall of the structural layer (61); The connecting layer (62) and the thermal insulation layer (63) are constructed based on the second waterproof and anti-seepage coating (46).

8. The construction method according to claim 7, characterized in that: A circle of solid concrete brick layer (53) is provided outside the insulation layer (63) of the underground side wall (52) for protecting the insulation layer (63), and a backfill layer (54) is provided outside the solid concrete brick layer (53).

9. The construction method according to claim 4, characterized in that: In step 2, the concrete solid brick layer (53) is constructed closely to the end of the pool bottom plate, and the concrete solid brick layer (53) and the backfill layer (54) are constructed based on the bearing layer (1) below the concrete cushion layer (83).

10. The construction method according to claim 4, characterized in that: The connection layer (62) is configured as a modified asphalt waterproofing membrane (45), and the modified asphalt waterproofing membrane (45) of the above-ground side wall (51) and the modified asphalt waterproofing membrane (45) of the underground side wall (52) are provided with an overlapping connection (47); The pool bottom plate is also provided with the modified asphalt waterproofing coiled material (45), and the modified asphalt waterproofing coiled material (45) realizes the sealing of the leachate pool.

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