Supported by the National Natural Science Foundation of China (51074071); the Scientific Research Fund of Hunan Provincial Education Department (12cy013)
This paper analyzed the strata behaviors of solid-coal roadway, gob-side entry driving and deformation law of surrounding rock in depth under high stress and thick composite roof based on the dynamic pressure roadway ...
Supported by the National Natural Science Foundation of China (51104063, 51074071); the Scientific Research Fund of Hunan Provincial Education Department (10C0665); 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
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...
Projects(10972238,51074071,50974059)supported by the National Natural Science Foundation of China;Project(10JJ3007)supported by the Natural Science Foundation of Hunan Province,China;Project(11C0539)supported by Scientific Research Fund of Hunan Provincial Education Department,China;Project(200905)supported by Open Research Fund of Hunan Provincial Key of Safe Mining Techniques of Coal Mines,China
By considering the effect of hydraulic pressure filled in wing crack and the connected part of main crack on the stress intensity factor at wing crack tip, a new wing crack model exerted by hydraulic pressure and far ...