Strong Rock Pressure Appearance Mechanism and Prevention and Control Measures in Large

Strong rock pressure phenomena appeared during the mining process in large mining height fully-mechanized caving face. Through ground stress test, rock burst tendency assessment and mining condition analysis, the paper obtained that the stress concentration caused by large falling height, big caving step of roof and goaf residual bearing stress and mining methods are the main factors to create the strong pressure appearances. And on the basis of strengthening the monitoring and forecasting, the measures such as forced roof caving, loosening blasting, coal injection and face optimization arrangement improve safety conditions significantly.