Mining Practice for Support Break-off and Water Inrush Prevention Under Loose Aquifer

According to mining geological and hydrogeological conditions in 7131 working face of Qidong Mine, the article develops technical programs to prevent support break-off and water inrush. The results show that the technology of deep-hole pre-splitting blasting key stratum can solve over burden broken disasters under loose aquifer, and ZY10000／23.5／42 hydraulic support meets the requirements of mining conditions.