1、 Principle
The basic principle of rainwater infiltration channel is to simulate groundwater circulation, filter rainwater and infiltrate it into the groundwater layer, avoiding the pollution caused by rainwater runoff to the city and the natural environment
The destruction. Its main components include infiltration layer, filtration layer, drainage pipe, and anti-seepage layer.
The infiltration layer is a key part of rainwater infiltration channels, mainly composed of large particles of gravel and crushed stone, with good permeability and hydraulic conductivity. The filter layer is usually composed of sand and
Composed of fine gravel, it is used to filter sediment and impurities in rainwater to prevent channel blockage. Drainage pipes are usually located below the permeable layer and are used to discharge groundwater after infiltration. Anti-seepage layer
Usually located above the permeable layer, special materials are used to prevent the upward movement of moisture in the permeable layer.
When it rains, the rainwater will first be collected in collectors on the ground and then transported through pipelines to the starting point of the rainwater infiltration channel. In the infiltration layer, rainwater will be filtered
Layer, remove impurities and sediment. The filtered rainwater will gradually infiltrate into the permeable layer, with a portion being absorbed by the permeable layer and a portion being discharged through drainage pipes.
2、 Construction
In addition to the above parts, rainwater infiltration channels also require anti-seepage layers, reinforcement layers, and surface layers. The anti-seepage layer is made of special materials to prevent moisture from moving upwards during the infiltration process
The material or film needs to be covered. The reinforcement layer is mainly used to enhance the load-bearing capacity of the channel, and its main materials include bricks, concrete, and chutes. The surface layer is for aesthetics and to prevent infiltration
Canal greening should use lawn like greening materials to cover the surface of the channel