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Bio-retention pond

A bio-retention pond and retention pond technology, which is applied in the field of surface runoff treatment, can solve the problems that drainage demand and landscape demand cannot coexist, and dead seedlings are prone to occur.

Active Publication Date: 2017-09-08
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the embodiment of the present invention provides a bioretention pond, which is used to solve the problem that in the prior art, during the construction of the sponge city, the plants in the bioretention pond are prone to Dead seedlings appear, resulting in technical problems that drainage requirements and landscape requirements cannot coexist

Method used

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Embodiment 1

[0050] In practical application, this embodiment builds a bioretention pond in the reconstruction area, and the water storage capacity of the bioretention pond is 0.75m 3 ; The specific implementation is as follows:

[0051] Excavate a square foundation pit with a length of 3m, a width of 2m, and a depth of about 97.5cm in the reconstruction area, and lay impermeable geotextiles around the foundation pit and at the bottom; the bioretention tank includes: gravel base 1, separation layer 2, and isolation components 3. Planting soil layer 4, filter material layer 5; wherein,

[0052] The crushed stone base 1 is located at the bottom of the detention tank, and is used for load-bearing and infiltrating water flow; the thickness of the crushed stone base is 30cm, and the crushed stone can be open-graded crushed stone, and the crushing value is ≤25%; The particle size of the gravel is 5-25mm.

[0053] The separation layer 2 is located above the crushed stone base 1; the separation ...

Embodiment 2

[0075] In practical application, this embodiment builds a bioretention pond in the reconstruction area, and the water storage capacity of the bioretention pond is 0.9m 3 ; The specific implementation is as follows:

[0076] In the reconstruction area, a circular foundation pit with a radius of 1m and a depth of about 102cm was excavated, and impermeable geotextiles were laid around and at the bottom of the foundation pit; Soil layer 4, filter material layer 5; wherein,

[0077] The crushed stone base 1 is located at the bottom of the detention tank, and is used for load bearing and seepage flow; the thickness of the crushed stone base is 25cm, and the crushed stone can be open-graded crushed stone, and the crushing value is ≤25%; The particle size of the gravel is 5-25 mm.

[0078] The separation layer 2 is located above the gravel base 1; the separation layer 2 is a permeable geotextile.

[0079] The isolation component 3 is located above the separation layer 2, and there ...

Embodiment 3

[0100] In practical application, this embodiment builds a bioretention pond in the reconstruction area, and the water storage capacity of the bioretention pond is 0.7m 3 ; The specific implementation is as follows:

[0101] Excavate an equilateral triangular foundation pit with a side length of 4m and a depth of 90cm in the reconstruction area, and lay impermeable geotextiles around and at the bottom of the foundation pit; Planting soil layer 4, filter material layer 5; wherein,

[0102] The crushed stone base 1 is located at the bottom of the detention tank, and is used for load bearing and seepage flow; the thickness of the crushed stone base is 20cm, and the crushed stone can be open-graded crushed stone, and the crushing value is ≤25%; The particle size of the gravel is 5-25 mm.

[0103] The separation layer 2 is located above the gravel base 1; the separation layer 2 is a permeable geotextile.

[0104] The isolation component 3 is located above the separation layer 2, ...

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Abstract

The invention provides a bio-retention pond. The bio-retention pond includes a basic gravel layer, a separation layer, a separation part, a planting soil layer and a filtering layer, wherein the basic gravel layer is located at the bottom of bio-retention pond, the separation layer is located on the basic gravel layer, the separation part is located above the separation layer, an included angle exists between the separation layer and the separation part, the planting soil layer is located on one side of the separation part, the planting soil layer is filled with normal soil, and the filtering layer is located at the other side of separation plates and used for seepage. The planting soil layer is of a convexity structure of which the middle is high and the periphery is low; in this way, the partition divides the bio-retention pond into a drainage area and a planting area; when rainfall is relatively large, because the planting soil layer is of the convexity structure of which the middle is high and the periphery is low, rain water flow towards the outer side of the filter layer, the filter layer conducts filtration and seepage on the rain water, and the drainage requirements are met; in this way, a large quantity of rain water cannot be retained in the planting soil layer, the seepage force of the normal soil is not large so that normal evergreen plants can be planted in the planting soil layer, and landscape requirements can be met.

Description

technical field [0001] The invention belongs to the technical field of surface runoff treatment, in particular to a biological retention pond. Background technique [0002] With the rapid development of society and economy, urban water safety and water environment problems are becoming more and more serious, and more and more cities are frequently experiencing environmental problems such as heavy rain, internal waterlogging, and black and smelly water bodies. For this reason, the state proposes the strategy of building a sponge city. Sponge city refers to strengthening urban planning and construction management, giving full play to the absorption, storage and slow release of rainwater by ecological systems such as buildings, roads, green spaces, and water systems, effectively controlling rainwater runoff, and realizing natural accumulation, natural infiltration, and natural purification. A way of urban development. [0003] The bioretention pond is the main component of th...

Claims

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Application Information

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IPC IPC(8): E03F1/00C02F1/62C02F1/28
CPCC02F1/28C02F1/62E03F1/002
Inventor 康凌晨王志雄曹利勇徐隆辉吴寅卢丽君刘瑛熊家剑周许林韩斌
Owner 武汉钢铁有限公司
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