The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above min...The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above mined-out area, the fault acti- vation effect was divided into the following three periods: the initial activation, the excessive activation and the ultimate activation. Corresponding activation criterion was also deduced by the mechanics theory. Results of engineering example and numerical analysis show that the activation criterion can reflect the activation laws of fault caused by coal mining.展开更多
基金Supported by the National Natural Science Foundation of China (51104063, 51074071) the Scientific Research Fund of Hunan Provincial Education Department (10C0665)+1 种基金 the Open Foundation of Htman Key Laboratory of Safe Mining Techniques of Coal Mines (200904) the Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Htman Province
文摘The system research aimed at activation laws caused by coal mining in fault footwall based on the rock strata me- chanics theory in this paper. According to the three-belt characteristics of overlying strata above mined-out area, the fault acti- vation effect was divided into the following three periods: the initial activation, the excessive activation and the ultimate activation. Corresponding activation criterion was also deduced by the mechanics theory. Results of engineering example and numerical analysis show that the activation criterion can reflect the activation laws of fault caused by coal mining.