A sunken plaza for rainwater collection and reuse and its construction method

Abstract

The invention discloses a sunken plaza capable of collecting and recycling rainwater and a construction method thereof. The sunken plaza comprises a foundation pad laid at the bottom of a foundation pit, a rainwater collection structure erected on the foundation pad, and a rainwater infiltration structure laid on the rainwater collection structure. A water outlet well is arranged inside the rainwater collection structure. Vegetation buffer belts are arranged on the outer sides of the periphery of the upper portion of the foundation pit. The rainwater collection structure is formed by splicing a plurality of PP rainwater collection modules, and an overflow pipe is arranged at the upper portion of the rainwater collection structure. The rainwater infiltration structure comprises a filter layer, a medium sand layer, a rubble layer, a coarse sand layer and a filter plate which are distributed from bottom to top. The construction method comprises the steps of 1, foundation pit excavation; 2, foundation pad construction; 3, rainwater collection structure construction; 4, rainwater infiltration structure construction; 5, follow-up construction. The sunken plaza is reasonable in design, easy and convenient to construct, good in using effect and capable of filtering and collecting rainwater, forming integrated rainwater infiltration and collection, effectively solving the problem of water drainage of the sunken plaza.

Description

technical field [0001] The invention belongs to the technical field of sunken plaza construction, and in particular relates to a sunken plaza for collecting and reusing rainwater and a construction method thereof. Background technique [0002] Sunken plaza (Sunken plaza) is a kind of urban leisure plaza. It is an enclosed open public space. The whole or part of the sunken plaza sinks into the surrounding environment. The difference between it and the ground plaza is mainly reflected in the space The sense of enclosure, plane form, ground design and safety etc. The sunken square is now known as one of the methods of making open space in high-density central cities. Since the whole or part of the sunken plaza sinks into the surrounding environment, the drainage problem of the sunken plaza is very important. Nowadays, when constructing the drainage structure of the sunken square, there is no unified, standard and standardized construction method to follow. In actual construct...

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Problems solved by technology

Nowadays, when constructing the drainage structure of the sunken square, there is no unified, standard and standardized construction method to follow. In actual construction, there are inevitably random construction operations and poor use of the constructed drainage structure. question

Existing sunken squares usually only set up multiple drainage channels in the square, mainly relying on the drainage channels for drainage. The drainage effect is limited by the number, location and drainage capacity of the drainage channels. Once the number of drainage channels is insufficient and the location design is unreasonable Or there is a blockage, especially when there is heavy rainfall, the drainage effect will be greatly affected

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