Nanminghe Iron Mine and Wannian Coal Mine of Hebei province, belong to the same hydrogeological unit with coal ore in the upper permo-carboniferous system and iron ore in the contact metasomatic mineralization of ordovician and pyrolith at the bottom of coal mine. High-volume pit water gushing, high pressure on the lower coal mine, and complex mine hydrogeological conditions directly threaten the safety of mining. Through analyzing the characteristics of the mine hydrogeological system, the volume of pit water gushing is forecast by using the numerical method. In the light of the hydro-logical conditions and relationships between the two mines, with the reference of mine exploitation program, a scheme that two mines share the dewatering and drainage system is proposed to uniformly solve the mine flood, which will avoid overlapping construction and save large amount of infrastructure and operating costs.%南洺河铁矿与万年煤矿同属一个水文地质单元,煤矿赋存于上部石炭、二迭系,铁矿为奥陶系与火成岩接触交代成矿,位于煤矿底部.矿山水文地质条件复杂,矿坑涌水量大,下层煤承受压力大,对矿山的安全开采构成直接威胁.通过对矿山所处水文地质系统特征的分析,用数值法预测了矿坑涌水量,并根据2矿的水文地质条件及关系,结合矿山开发利用方案,提出了2矿共用疏干排水系统,统一解决矿山水患的方案,避免重复建设,可节约大量基建和运行费用.
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