Weathered rock is the predecessor of saprolite and is mainly made of corestones surrounded by saprolite crust.

土层贮上层，风化岩带则潜或承压。

Minish the well space and increase transflux routeways upper backwater and driving, especially setup precipitation well and drain residual water at the bottom of diving layer.

减井间距，增加上层潜的入流通道，尤其要在潜含层底板低洼处设置降井将低洼处的残留引走。