Research progress of mining response and disaster prevention and control in deep coal mines

Understanding the response mechanism of deep mining and disaster prevention and control technology is of practical significance to safe and efficient coalmining In view of the complex environment of deep mining characterized by high ground stress,high temperature,high karst water pressure and strong mining disturbances,coal and rock response characteristics during deep mining activities is discussed Meanwhile,the spatial-temporal dynamic evolution law of multiple physical and chemical fields in coal mining,the dynamic-superposition multi-phase and multi-field coupling hazard mechanism in multi-resources and whole life cycle are described Finally,based on above-mentioned mining response characteristics,multi-field coupling laws and disaster-causing mechanism,the key disaster prevention and control technologies in deep mining are discussed from following three perspectives: key technologies of transparent mines and geological support,key technologies of disaster risk identification,monitoring and early warning,and key technologies of typical dynamic disaster prevention and control In future studies,supports for basic research on deep mining and independent innovation of major instruments and scientific devices should be increased Research on basic theories and key technologies of deep coal mining should be emphasized,and the theoretical and technical bottlenecks restricting China’s deep coal mining are expected to be removed based on technological innovation Strengthen analysis of multi-physical and chemical field coupling disaster mechanism in deep mining; realize precise geological exploration and three-dimensional geological visualization; establish a deep mining disaster risk identification and rationality evaluation model; conduct research on multi-parameter disaster early warning and prevention and control technology and equipment,to achieve effective early warning and precise prevention and control of disasters As a result,a theory and technical standards system for deep coal mining response and disaster prevention and control is expected to be established Meanwhile,according to full understanding of various disaster characteristics,the limits of control capabilities and the technical and economic feasibility,the depth limit of mining is expected to be determined Finally,scientific problems and major technical issues faced by deep mining are effectively solved,guarding safe efficient mining in deep coal mines.