Study on Mine Pressure Bumping Prevention and Control Technology of Coal Mining Face in Seam Island Based on Defect Method

According to the problems of the mine pressure bumping accident frequently occurred in coal mining face in the seam island, the defect method was app lied to prevent and control the mine pressure bumping in the high stress region of the coal mining face in the seam island, the artificial defect mass was applied to migr ate the stress field of the coal mining face in the seam island, the energy continuously and slowly releasing could form a pressure releasing and protection zone during t he stress filed migration process and thus the danger of the mine pressure bumping could be reduced.The pressure released gateway, blasting boreholes, large diamet er boreholes and other artificial defect technical method applied could effectively make the stress migration forward to the deep of the coal mining face and could have an energy released effect.An active stress monitoring and measuring technology was applied to the effect inspection.The observation results showed that based on the artificial defect mass pressure pre-release, the pressure was decreased and migratied efficiently, the coal mining face didnOt appear the phenomenon of stress accumul ation.