Study on the structure control actions to limestone water occurrence in Huainan coalfield

In order to find out controlling features of structure to the limestone water occurrence in Huainan coalfield,the diversity of water conductivity in different tectonic periods was analyzed.Three different levels of the structure of Huainan coalfield were classified according to the controlling effects on underground water,and the three levels structure features and their control actions on limestone water were analyzed in detail.The Huainan coalfield hydrology geology units were divided into three different areas based on the second level structure features,and the hydrogeology features of these areas were analyzed.Finally,this paper proposed the corresponding water disaster prevention methods to coal mining,that is,in the central area (main mining area),water disaster prevention mainly depends on dewatering,at the same time the dewatering should be combined with the plugging.And the fault and collapse column must be focused on.