A rainwater collection and infiltration system to prevent ground subsidence and deformation

Abstract

The invention discloses a rainwater collection and permeation system preventing settlement deformation of the ground. The rainwater collection and permeation system comprises a primary rainwater flow abandoning pond, a filtering and purifying pond, a rainwater collection tank and a dry type sludge removing well. Multiple permeation filtering pipelines are vertically connected to the lower portion of the rainwater collection pond at intervals. The rainwater collection pond is formed by building polypropylene plastic modules and is wrapped in a waterproof geomembrane. The permeation filtering pipelines can guide rainwater to cross a foundation bearing layer to reach a lower sand contained layer, it is avoided that damage is generated due to the fact that rainwater permeates into the soil body of the foundation bearing layer for a long time and even soaks the soil body, and therefore a foundation is effectively prevented from settlement deformation. According to the rainwater collection and permeation system preventing the settlement deformation of the ground, the permeation filtering pipelines and the polypropylene plastic modules are combined to form an in-situ permeation system, the demands of ground settlement and utilization of rain seepage are met, the contradiction that the settlement of the ground and the in-situ permeation cannot be unified is overcome, and the rainwater collection and permeation system is widely applied to and built under the ground of rigid pavement park sites, squares, parking lots and the like.

Description

Technical field [0001] The invention relates to the technical field of rainwater collection and treatment facilities, and in particular to a rainwater collection and penetration system. Background technique [0002] Due to the increasing shortage of water resources, countries all over the world attach great importance to the development and application of urban rainwater utilization. Rainwater infiltration system facilities are one of the commonly used rainwater utilization technologies. The rainwater infiltration system uses natural or artificial conditions to allow rainwater to penetrate into the ground. This not only reduces the discharge of rainwater, but also conserves groundwater. The polypropylene plastic module is a new rainwater facility that can store and drain water in recent years. The polypropylene plastic module is made of polypropylene plastic. The monomer is a rectangular parallelepiped and the interior is hollow. Each unit module can be assembled. Combination, a...

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Problems solved by technology

[0003] Polypropylene plastic modules can be used as underground infiltration system facilities, that is, polypropylene plastic modules are used as reservoirs to infiltrate in situ, but polypropylene plastic modules as underground infiltration system facilities are all built on green ground, which is difficult to build in Hard pavement garden sites, squares, parking lots and other sites, this is because the hard pavement and dynamic loads on the site have higher requirements for the bearing capacity of the foundation below, because the rainwater infiltrates in the original position, the rainwater directly falls Seep into the bearing layer of the foundation to the underlying layer, the bearing layer is soaked by rain for a long time, the soil becomes soft, the bearing capacity will inevitably decrease, so that the upper structure will be deformed and damaged; in addition, in order to improve the bearing capacity of the foundation, the soil on the underlying surface of the module The body is rolled, and the soil permeability coefficient after rolling is greatly reduced, which is lower than that of clay, and the purpose of infiltration and recharge cannot be achieved.

Therefore, if the polypropylene plastic module is built under the hard pavement as an in-situ infiltration system facility, deformation and settlement of the pavement or the pavement above will usually occur, which cannot meet the quality requirements

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