Rainwater permeation structure of sponge city

Abstract

The utility model discloses a rainwater permeation structure of a sponge city, which relates to the field of sponge cities and is characterized by comprising a water storage tank and a plurality of plant modules, each plant module comprises a pot body, a permeable soil body is arranged in each pot body, mounting grooves matched with the plant modules are arranged on two inner walls of the water storage tank, and gaps are arranged between adjacent plant modules. A net plate is arranged at the bottom of the gap, the gap is filled with a gravel layer, and a plurality of water permeable holes are formed in the two sides of the pot body. The gaps are formed between the adjacent plant modules, the gravel layers are filled in the gaps, and the water permeable holes are formed in the two sides of the pot body, so that when the rainfall is too large, rainwater can be quickly discharged through the gaps formed between the adjacent plant modules, the water seepage pressure of a soil body is relieved, water accumulation and surface runoff are avoided, and the soil quality is improved. And the loss of the soil body is avoided.

Description

Technical Field

[0001] The utility model relates to the field of sponge cities, and more specifically, to a rainwater infiltration structure of a sponge city. Background Art

[0002] Sponge cities include permeable green spaces, which refer to green belts, lawns, gardens and other areas with permeability that can allow rainwater to penetrate and collect rainwater. When it is not raining, the collected rainwater can be used to irrigate the green spaces.

[0003] However, when the rainfall is too heavy, the soil may not be able to quickly absorb all the rainwater, resulting in soil saturation and local waterlogging, which will increase surface runoff and cause vegetation and soil to be eroded and damaged to a certain extent.

[0004] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a sponge city rainwater infiltration structure that can quickly absorb rainwater and prevent surface runoff.

[0006] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: the sponge city rainwater infiltration structure includes a water storage tank and a plurality of plant modules, the plant module includes a basin body, a permeable soil body is arranged in the basin body, installation grooves matching the plant modules are opened on the two inner walls of the water storage tank, gaps are arranged between adjacent plant modules, a mesh plate is arranged at the bottom of the gap, the gap is filled with a sand and gravel layer, and a plurality of permeable holes are opened on both sides of the basin body.

[0007] The utility model is further configured as follows: the sand and gravel layer includes a small-grain layer, a medium-grain layer and a coarse-grain layer from bottom to top, the particle size of the coarse-grain layer is larger than that of the medium-grain layer, and the particle size of the medium-grain layer is larger than that of the small-grain layer.

[0008] The utility model is further configured as follows: a drain pipe is arranged on the outer wall of the water tank, and the drain pipe is communicated with the inside of the water tank.

[0009] The utility model is further configured as follows: a support body is arranged at the bottom of the water storage tank, and the upper surface of the support body abuts against the basin body and the mesh plate.

[0010] The utility model is further configured as follows: the basin body is made of porous concrete material.

[0011] In summary, the utility model has the following beneficial effects:

[0012] The utility model has gaps between adjacent plant modules, mesh plates are arranged at the bottom of the gaps, and the gaps are filled with gravel layers. A plurality of water-permeable holes are opened on both sides of the basin body. When the rainfall is too heavy, rainwater can pass through the gaps between adjacent plant modules, and the rainwater is filtered through the gravel layer and finally enters the water storage tank through the mesh plates. The gravel layer includes a plurality of gravels, and there are large gaps between the gravels, so that rainwater can pass through quickly. Excessive water in the basin body can also enter the gaps from the water-permeable holes and be quickly discharged, thereby alleviating the water seepage pressure of the soil body, avoiding water accumulation and surface runoff, and also avoiding the loss of the soil body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] In the figure: 1. water storage tank; 2. basin body; 3. mounting groove; 4. gap; 5. water permeable hole; 6. drainage pipe; 7. support body. DETAILED DESCRIPTION

[0015] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0016] Example: Sponge city rainwater infiltration structure, such as Figure 1 As shown, it includes a water storage tank 1 and several plant modules. The plant module includes a basin body 2. The basin body 2 is made of porous concrete. The porous concrete basin body 2 has a certain water permeability and can effectively penetrate rainwater. A permeable soil body (not shown in the figure) is arranged in the basin body 2. When rainwater falls on the permeable soil body, the rainwater can descend through the permeable soil body and finally contact the basin body 2, and then enter the water storage tank 1 through the basin body 2. The two inner walls of the water storage tank 1 are provided with installation grooves 3 matching the plant modules. A gap 4 is arranged between adjacent plant modules, and a mesh is arranged at the bottom of the gap 4. The gap 4 is filled with a sand and gravel layer (not shown in the figure), and a number of water-permeable holes 5 are opened on both sides of the basin body 2. When the rainfall is too heavy, rainwater can pass through the gaps 4 provided between adjacent plant modules. After being filtered by the sand and gravel layer, the rainwater finally enters the water storage tank 1 through the mesh plate. The sand and gravel layer includes a number of sand and gravel, and there are large gaps between the sand and gravel, which can allow rainwater to pass quickly. Excessive water in the basin body 2 can also enter the gaps 4 from the water-permeable holes 5 and be quickly discharged, which relieves the seepage pressure of the soil, avoids water accumulation and surface runoff, and also avoids the loss of the soil.

[0017] The gravel layer includes a small-grained layer, a medium-grained layer and a coarse-grained layer from bottom to top. The particle size of the coarse-grained layer is larger than that of the medium-grained layer, and the particle size of the medium-grained layer is larger than that of the small-grained layer. Rainwater passes through the coarse-grained layer, the medium-grained layer and the small-grained layer in turn during the infiltration process. The gaps between the gravel in the coarse-grained layer are larger, which can filter out larger impurities and allow rainwater to pass through faster, avoiding larger impurities from clogging the gaps between the small-grained layer and the medium-grained layer, ensuring the stability of water seepage in the gap 4 while taking into account the filtering performance.

[0018] A drain pipe 6 is provided on the outer wall of the water tank 1, and the drain pipe 6 is communicated with the inside of the water tank 1. When there is too much water stored in the water tank 1, rainwater that overflows the drain pipe 6 will pass through the drain pipe 6 into the municipal drain pipe 6 network, thereby avoiding water accumulation caused by the water level in the water tank 1 being too high and the rainwater being unable to infiltrate.

[0019] A support body 7 is provided at the bottom of the water storage tank 1, and the upper surface of the support body 7 contacts the basin body 2 and the mesh plate. The support body 7 is made of concrete and can support the basin body 2 and the mesh plate to prevent the basin body 2 and the gravel layer from collapsing, thereby having better stability.

[0020] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rainwater infiltration structure for a sponge city, comprising a water storage tank (1) and a plurality of plant modules, wherein the plant modules comprise a basin (2), wherein a permeable soil body is arranged in the basin (2), and wherein: The water storage tank (1) has mounting grooves (3) matching the plant modules on both inner walls, gaps (4) are provided between adjacent plant modules, mesh plates are provided at the bottom of the gaps (4), and the gaps (4) are filled with a sand and gravel layer, and a plurality of water-permeable holes (5) are provided on both sides of the basin body (2).

2. The sponge city rainwater infiltration structure according to claim 1 is characterized in that: The sandstone layer includes a small-grain layer, a medium-grain layer and a coarse-grain layer from bottom to top. The particle size of the coarse-grain layer is larger than that of the medium-grain layer, and the particle size of the medium-grain layer is larger than that of the small-grain layer.

3. The sponge city rainwater infiltration structure according to claim 1 is characterized in that: A drainage pipe (6) is provided on the outer wall of the water storage tank (1), and the drainage pipe (6) is communicated with the interior of the water storage tank (1).

4. The sponge city rainwater infiltration structure according to claim 1 is characterized in that: A support body (7) is provided at the bottom of the water storage tank (1), and the upper surface of the support body (7) abuts against the basin body (2) and the mesh plate.

5. The sponge city rainwater infiltration structure according to claim 1 is characterized by: The basin body (2) is made of porous concrete material.

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