Abstract:Based on the concept of green mining and dynamics of fluid in rock mass affected by mining,the viewpoint of simultaneous exploitation for coal and water to continuously utilize water resources as well as safely mining is put forward,which is different from the traditional mining methods,such as draining water before mining and combination of drainage and application for other purpose. At the same time,taking the Lu¢an coalfield as case study to analyze the characteristics of groundwater system,mining groundwater is successfully utilized and simultaneous exploitation of coal and groundwater by using the water-resisting capability of Ordovician top is implemented. The results indicate:(1) the simultaneous exploitation of coal and groundwater can not only properly exploit groundwater to maintain the dynamical balance state of spring group flow,but also make it possible to mining a great deal of coal resources in shallow part economically and safely,which is threaten by Ordovician water;(2) the discovery and utilization of aquifuges in Ordovician top are the precondition and guarantee to carry out simultaneous exploitation of coal and groundwater without reducing the water level of Ordovician groundwater under floor,which will release not only the coal seam No.3 but also the lower coal seams which account for one third of total reserve in the mine area;and (3) simultaneous exploitation and utility of coal and groundwater have played a major part in keeping the basic exploitation-recharge balance of groundwater in the mining area and even in the whole basin. Overall,the objective of the simultaneous exploitation of coal and groundwater is to exploit this two kinds of resources properly without destroying water and environment and decreasing safety.