No. 3 coal seam mining in the 3011 working face of Zhongli Minefield is affected by roof sandstone aquifer, floor sandstone aquifer, Ordovician limestone aquifer and Karst collapsed column. Based on the results of various exploration methods, the water inrush danger of the 3011 working face was evaluated comprehensively. The research results showed that the coal seam roof with possibility of water inrush and negative effect on production, there were three water-rich areas in the coal seam floor, but none of them had the characteristics of ash-water. In the absence of large water-conducting channels, the possibility of water inrush was small, the subsidence columns on both sides of the working surface were generally not a water inrush threat.
张倩云. 中利井田3011工作面突水危险性评价[J]. 煤炭与化工, 2019, 42(6): 64-66.
Zhang Qianyun. Study on water inrush danger of 3011 working face in Zhongli Mine Field. CCI, 2019, 42(6): 64-66.
