中文摘要：

以鄂尔多斯市台格庙矿区为例,研究多层含水系统水文地质参数和边界条件特征,运用Visual Modflow软件建立研究区三维地下水数值模型,采用钻孔抽水实验资料及矿区初始流场分布数据完成了模型识别和校正。针对以往疏降水量预测未考虑采动后水文地质条件变化的问题,基于导水裂隙带发育高度与顶板隔水层的侵入关系确定了疏降含水层层位和区域,对矿区7个井田2、3煤层顶板含水层在天然状态和采动状态下的疏降水量进行了预测,结果表明：采动状态下顶板含水层疏降水量明显增大,开采前需要对顶板含水层水位进行疏降,且水位疏降会对当地居民饮用水含水层造成一定的影响。

英文摘要：

Taking Taigemiao mine in Erdos city as an example,a 3D numerical simulation model is established for a groundwater system by analyzing the aqueous medium parameters and boundary characteristics in mining area with a multilayer aquifer system,then the model is recognized and calibrated using drill pumping data.Aiming at the problem that the change or hydrogeology conditions after mining are not considered in previous dewatering prediction,a map is introduced which indicates the invaded relationship of a fractured zone and aquiclude thickness. The amount of roof aquifer dewatering of seven fields is predicted in natural and mining conditions respectively,using the established model. The result shows that： the dewatering quantity in mining condition is much bigger than that in natural condition,thusly the roof aquifer must be dewatered before mining,and the dewatering will affect domestic water aquifer.