鸡西市西郊乡梁家村地下水位下降的原因分析

Analysis on the Reasons of Groundwater Dropping of Liangjia Village West in Jixi City

在详细分析鸡西西郊乡梁家村水文地质条件、矿区疏干量组成、地面现状的基础上,得出研究区第四系孔隙含水层直接覆盖在白垩系煤系风化裂隙含水带上,二者有直接的水力联系;存在风化裂隙、构造裂隙、断层及采矿冒落带裂隙等导水通道,再加上矿井疏干排水造成煤系地层裂隙水与第四系孔隙水之间的几百米的水头差;这些水文地质条件是梁家村地下水位大幅度下降、民井干枯、鱼塘干涸的直接原因。

On the basis of the analysis about hydro-geological conditions, mine dewatering ,and surface status of Liangjia Village West in Jixi City , the author have conclusion as follows. （1）the fourth of pore aquifer directly covered in the aquifers zone of weathered cracks of Cretaceous coal, the two aquifers have a direct hydraulic relationship; （2） there are weathered cracks, structural cracks, faults, and water channels due to mining; （3）there are large distance between the fourth of pore aquifer and the cretaceous coal aquifer. these hydro-geological conditions is the directly reason of the groundwater dropping, the well and fish ponds drying.