The influence of underground coal mining on groundwater and measures for water conservation while mining in Xiaozhuang mine

Aiming at the problems such as collapse of ground surface and damage of aquifer induced by coal mining this paper calculates height of water flowing fractured zone in XiaoZhuang mine by using the analogy method. In addition, based on this, we analyzed the influence of mining and put forward water conservation while mining.Calculated from experimental data, height of water flowing fractured zones has an absolute maximum of 147.84 m by slice mining. Breakover of aquiclude of Anding Formation results in the destruction of confined aquifer of Luohe Formation in the third panel, the breakover area reached 0.7736 km². Mining with water conservation should be applied in the area where the breakover may occur to ensure the stability of the aquiclude of Anding formation so as to achieve the double goals of protecting the water supplying aquifer and ensuring the safety of mine production.