Greenbelt structure integrating rainwater storage and utilization

Abstract

The invention provides a greenbelt structure integrating rainwater storage and utilization in the technical field of sponge city building.The greenbelt structure comprises a vegetation layer, a planting soil layer and a water storage layer which are sequentially arranged from top to bottom.A separating layer is arranged between the planting soil layer and the water storage layer.A rainwater permeating and drainage facility is arranged in the greenbelt structure and comprises a gravel buffering area and a water drainage pipe, wherein the gravel buffering area penetrates through the greenbelt structure from top to bottom, and the water drainage pipe is arranged in the gravel buffering area.An overflowing area is arranged on the upper portion of the water drainage pipe and sleeved with a protecting hood.Rainwater can be directly absorbed and stored in the water storage layer of the lower layer of the greenbelt structure, the rainwater runoff volume generated by rainfall of rainstorms and above can be reduced, pressure of a municipal drainage network is effectively relieved, the stored rainwater can be directly utilized for growth of green plants, and the irrigation needs of the green plants are effectively reduced.

Description

technical field [0001] The invention relates to a technology in the field of sponge city construction, in particular to an integrated green space structure capable of storing and utilizing rainwater. Background technique [0002] The urban roads and buildings in our country are basically paved with hard pavement, which has almost no rainwater absorption capacity. When it rains, all rainwater needs to be drained through the municipal pipe network. In the event of a heavy rainstorm or an extremely heavy rainstorm, a large amount of rainwater will flow in instantaneously, which will bring huge pressure to the municipal drainage pipe network. Once the drainage is not smooth, urban waterlogging will occur. [0003] The goal of sponge city construction is to increase the functions of various urban facilities to absorb, infiltrate, stagnate, store, purify, use, and drain rainwater, promote the in-situ consumption and utilization of rainwater in cities, and reduce urban waterlogging...

AI Technical Summary

Problems solved by technology

[0007] In the above-mentioned technology, the rain garden will accumulate more rainwater, and it is easy to form a long-term water surface in the rainy season or after the rain, so only some aquatic or wet plants can be planted; in the dry season, these aquatic or wet plants need A large amount of irrigation water is needed to survive, which exacerbates the water conflict in the dry season

However, the water storage capacity of the sunken green space is relatively poor, and it is often in a state of water accumulation or waterlogging during the rainy season, which easily leads to the degradation and death of xerophytes in the green space, and the soil is prone to serious compaction in the waterlogged state, which further deteriorates the plants. growth environment; if the water storage capacity of the sunken green space is increased by increasing the water storage tank, the water pump and irrigation system need to be installed, and the construction and maintenance costs are relatively high

Because the rain garden and the sunken green space are often in a state of water accumulation, residents cannot carry out leisure activities on the green space, which intensifies the contradiction between the construction of green space and the requirements of urban residents for leisure space

Images