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Construction method of rainwater garden in sponge city transformation

A rain garden and sponge city technology, applied in the municipal field, can solve the problems of low economic benefit, weak applicability, and high cost, and achieve the effects of low construction cost and maintenance cost, low difficulty, and fast speed

Inactive Publication Date: 2021-12-17
LONGYAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current construction methods of rain gardens in sponge city reconstruction have problems such as low economic benefits, high costs, slow construction, and weak applicability.

Method used

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  • Construction method of rainwater garden in sponge city transformation
  • Construction method of rainwater garden in sponge city transformation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] refer to figure 1 , the construction method of the rain garden in the transformation of the sponge city, including the following steps:

[0037] S1. Construction preparation;

[0038] S2, grass-roots treatment;

[0039] S3. Masonry and connection of water collection wells;

[0040] S4, HDPE anti-seepage layer laying;

[0041] S5, gravel, gravel cushion and permeable blind pipe laying;

[0042] S6, non-horizontal filter aquifer construction;

[0043] S7, planting soil backfill;

[0044] S8. Construction of drainage curb and buffer zone;

[0045] S9, green land planting.

[0046] Wherein, in S2, the following sub-steps are included:

[0047] S21. Demolition of the original ground: When the original site is cement, asphalt, or concrete slab hard pavement, firstly carry out mechanical demolition, and formulate a construction waste transportation plan;

[0048] S22. Construction preparation: including the leveling of the site, laying out, preparation of personnel, m...

Embodiment 2

[0061] The main points of operation in this embodiment are as follows:

[0062] Process principle:

[0063] Rain garden is a new technology for rainstorm management and non-point source pollution treatment in the construction of sponge city. It is mainly based on source decentralized management. Its basic principle is to simulate nature and use small-scale and decentralized source control to manage rainwater. The surface level of the rain garden is lower than the road surface level, and the rainwater runoff from the roadway and the roof is discharged into the permeable pavement or rain garden through scattered water, and the excess rainwater overflows into the overflow. Concrete bricks are used for the permeable pavement surface, and the gaps between the bricks are filled with gravel. The rainwater runoff infiltrates through the cracks of the gravel, and is discharged into the overflow through the blind pipe at the bottom of the gravel layer, and the rainwater is collected int...

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Abstract

The invention discloses a construction method of a rainwater garden in sponge city transformation. The construction method is characterized by comprising the following steps of S1, performing construction preparation; S2, treating a base layer; S3, building and joining water collecting wells; S4, paving an HDPE impermeable layer; S5, paving a gravel cushion layer, a gravel cushion layer and a water-permeable blind pipe; S6, constructing a non-horizontal filtering water storage layer; S7, backfilling the planting soil; S8, performing construction of drainage curbs and a buffer area; and S9, performing green land planting. The construction method of the rainwater garden in sponge city reconstruction has the advantage of relatively low construction management cost, the construction of hard pavement and municipal rainwater pipelines is greatly reduced by the construction of the rainwater garden, urban rainwater is effectively absorbed by ecological vegetation, and the project construction cost is saved. Meanwhile, rainwater permeation is effectively carried out, rainwater runoff is reduced through retention and absorption of plants and soil, downstream structures and water are protected, and compared with traditional rainfall flood management measures, the method is low in manufacturing cost and high in economic applicability.

Description

technical field [0001] The invention relates to the field of municipal administration, in particular to a construction method of rainwater gardens in sponge city reconstruction. Background technique [0002] In some cities in China, the drainage pipe network has a lot of debts, the pipes are aging, and the drainage standard is relatively low; and in some places, the drainage facilities are not perfect, and the construction of the drainage system is lagging behind, which makes the city prone to waterlogging. In addition, a large number of hard pavements in cities, such as asphalt roads and cement pavements, have poor water permeability during rainfall and are not easy to infiltrate, and it is easy to form water accumulation on this section of the road. The annual rainfall in Fujian Province is relatively large, and the slow drainage speed has a great impact on the life of urban residents. With the rapid development of the economy, the sponge city has been gradually welcomed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C11/22E03B3/02E03F3/04E03F5/04E03F5/10A01G22/00
CPCE01C11/221E01C11/227E03B3/02E03F3/04E03F5/0401E03F5/10A01G22/00Y02A10/30Y02A20/108
Inventor 罗涛
Owner LONGYAN UNIV
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