Theory and technical framework of prevention and control with different sources in multi-scales for coal and rock dynamic disasters in deep mining of coal mines

The deep mining of coal mines leads to some significant changes in the physical properties of coal and rock, stress environment and gas occurrence law. The perturbed range of overlying rock and level of dynamic-static load have also increased significantly. In addition,the disaster effect caused by the linkage of mine groups and the control effect of large geological bodies appear in deep mining. The same disaster effect with the coexistence and conversion of rock burst and coal & gas outburst occurs. Therefore,above characteristics make the prevention and control of dynamic dis- aster in deep coal mines become a problem to be solved urgently. Considering the situation that the conditions of disas- ter breeding and mutual transformation mechanism are complex and still unclear,the quick detection method,preven- tion-control technology and equipment are still lacking,in this paper,the key scientific and technical problems of pre- vention-control for dynamic disaster in deep mining are condensed,the thought of prevention and control with different sources in multi-scales for coal and rock dynamic disasters in deep mining is proposed,the research direction of pre- vention and control technology for dynamic disaster in deep mining is determined,and the theory and technical frame- work of prevention and control with different sources in multi-scales for coal and rock dynamic disasters in deep mining are established. Based on the above achievements,the theory and technology system of prevention and control with dif- ferent sources in multi-scales for coal and rock dynamic disasters in deep mining are formed successfully,which can provide a theoretical and technical support for the prevention and control of rock burst,the outburst of coal and gas or compound dynamic disaster in deep mining of coal mines in China.