dongwu

The tubular cave system resulted from erosion in Dongwu stage are the main reservoir space of Lower Permian limestone reservoirs in Sichuan Basin.

四川盆地下二叠统灰岩储层中，较大储量缝洞系统以东吴期暴露溶蚀形成的管道状溶洞系统为主要储集空间。

The geological model of the reservoirs could be described as a combination of tubular caves system of Dongwu stage and Himalaya tectonic fracture network.

缝洞系统是在东吴期古溶洞系统基础上，经埋藏后充填和溶解，最后由喜山期构造裂缝改造而成。

The largest subsidence rate of the fault on the steep slope make Huoen area and Dongwu area, both locate on the northern abrupt slope to be sustained depocenters.

北部陡坡断层沉降速率大，使得该区霍恩和冬屋地区成为持续发育的沉积中心。

Due to the increase of water pumpage and the sand excavation at the river bed, the groundwater table became declined and water quality degraded in Dongwu water sources area, Tai´an City.

泰安市东武水源地近年来由于开采逐年增加、河床挖沙等因素的影响，水源地附近地下水环境出现了水位下降、水质退化等环境地质问题。