Soil layer water storage device and reclamation mining area distributed water storage method

The invention provides a soil layer water storage device and a reclamation mining area distributed water storage method, and relates to the technical field of environmental science and hydrology research. The water storage slow-release assembly comprises a water storage barrel, a permeable stone and a water collector; the top face of the water storage barrel is sunken downwards, and a confluence opening is formed in the lowest position of the formed sunken face. The water collector is of a porous net-shaped structure and is mounted on the top layer of the concave surface; the bottom face of the water storage barrel is open or provided with a plurality of water seepage holes, and the inner bottom layer space of the water storage barrel is filled with the water permeable stone. The device can be applied to research on ecological restoration of arid and semi-arid mining areas, surface runoff formed by irrigation and heavy rainfall is widely and effectively stored, and water is released to supplement the soil moi