Comprehensive Treatment Technology of High Pressure-Bearing Ordovician Limestone Karst Water in Large Mining Depth Mine

According to the Fengfeng Mining Area's hydrogeological environment of large coal seam mining depth, high water pressure of the ordovician limestone karst water, varied concealed conductivity structure type, complicated occurrence and detection conditions, based on the analysis of the ordovician limestone karst wat er burst data and hydrological geology characteristics of the Fengfeng Mining Area and the influence on mining, formed a set of technology of ordovician limestone kars t water disaster management which including coal floor grouting reinforcement and reconstruction, ordovician limestone aquifer top grouting reinforcement, crack, fault, collapsing column water transmitting channel governance, horizontal and multi-lateral wells, water disaster monitoring and early warning, the practice proved that the m atching technology could effectively prevent the ordovician limestone karst water disaster.