目前，我国城市用水的供给，除取自江河外，大部分采用地下水。过量开采使地下水严重枯竭已成为阻碍我国许多城市发展的重要问题。因此，引水入土，尤其是引雨水入土补充城市地下水不足，是一个应该引起重视并进行大力研究的课题。在许多城市，绿地和可渗水地面少，大部分地表 At present, the supply of urban water supply in our country, except for rivers, mostly uses groundwater. Excessive exploitation of groundwater drained heavily has become an impediment to the development of many cities in our country an important issue. Therefore, the introduction of water into the soil, especially rainwater into the soil to supplement the lack of groundwater in the city, is a subject that deserves attention and carry out vigorous research. In many cities, green spaces and water seeps are few and most of the surface