| 摘要 |
PURPOSE: An infiltration system for storing rainwater in soil is provided to prevent the temporarily large outflow into the drainage system, and to permeate rainwater into the soil slowly by deciding the size of an infiltration tank according to geographical features and the nature of the soil. CONSTITUTION: A permeable sheet is spread on the bottom and the sides of the space formed by excavating the ground, and a gravel member is charged in the space. A rainwater storage infiltration system in soil is composed of a storage infiltration tank(1), and the entire area of permeation surface of the storage infiltration tank is decided with the ratio of saturation permeation coefficient to permeation rate. The storage infiltration tank is mounted with the water collecting tank of the house for circulating rainwater, and composed of a central permeation tube, gravel, rubble, the water collecting tank, an inlet, a water pipe, a feed pipe, a water gauge, level mortar, an overflow pipe, an orifice pipe with the check valve and a concrete plate.
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