低洼

The surrounding land is low and marshy.

周围地而多沼泽。

The torrential rain may flood the low-lying land out.

这场骤雨有可能把地淹没。

Hypergenesis palaeokarst usually manifests distinct vertical zoning rule which divides into epikarst zone, vadose zone and phreatic zone.

层岩溶带位于风壳层上部，风淋滤及地径流改造而破碎，短距离搬运堆积于地势相对较风壳，成一些溶沟、溶洞、溶缝、溶蚀地、溶蚀漏斗及落水洞等，其充填物主要为地残积物和洞壁塌积物。

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.

减小井间距，增加上层滞水和潜水入流通道，尤其要在潜水含水层底板处设置降水井将处残留水引走。