Mechanism and application of using engineering defect to prevent and control rock burst

Based on the complete researches on rock burst, the prevention and control situations and development tendency of rock burst are analyzed. The prevention and control idea of high stress and high energy rock burst is put forward. Defect is defined and classified as regards the engineering characteristics of rock burst seams. The mechanical mechanism that rock burst is prevented and controlled by engineering defect is described. Stress distribution of dangerous coal seams with defect media is analyzed. The specific application of mechanism that rock burst is prevented and controlled by engineering defect is elaborated through some projects, numerical simulation of range and degree of energy release is carried out. At the same time, some advances in the prevention of control of rock burst in deep and high impact energy areas are achieved.