Groundwater dynamics of water-filled aquifers in Feicheng colliery;

The enormous saline aquifers deeply buried in the sedimentary basins are saturated with high concentration dissolved solids,which make groundwater unsuitable to any large-scale exploitation.

Vulnerability assessment for unconfined aquifer in Guanzhong basin;

Calculation of typical unconfined aquifer seepage to a shallow lake with gentle slope bottom;

According to the framework of ModIME and experience in practice,problems existing in simulating unconfined aquifer are pointed out herein to avoid simulation deviation caused by the software itself.

Base on the related formulas of JGJ 120?99 technical specification,with steady flow theory,tube wells are designed for dewatering in a foundation pit locate in phreatic aquifer close to river.

Based on analyzing the discharge of the partially penetrated wells in phreatic aquifer,introducing the conception of "the effective zone"of pumping,probing into the feasibility and comparative error by translating the calculation of the discharge of the partially penetrated wells into the calculation of the discharge of the equivalent completely penetrated wells.