In recent years,accompanying with large-scale development on coal mine resources in Taozao mining area of Zaozhuang city,more and more bad influences to groundwater resources and ecological environment have been created by drainage.A great deal of draining water leaks into karst water through the bare limestone or the "open window",and Qingliangquan water source has been polluted.According to analysis on mine pit draining water volume,water quality and present exploration condition,it is regarded that plugg...