Study on the mining technology for pillar group in accident potential area

The area of veinlet belt orebady of Tongkeng Mine is identified as a accident potential area by Guangxi government for mine fire and ground control. So it is very difficult to recovery the pillars ore in this area. In this paper, the mining technical characteristics are analyzed. The complex technical problems of pillar group mining are solved by applying high efficiency block forced caving method with bundle-hole blasting and safety measure of flexible shockwave resistance wall, even ore drawing, and covering collapsed area. Finally the purpose to eliminate accident potent is achieved.