【摘要】 中利井田3011工作面3号煤层开采时,受到顶板砂岩含水层、底板砂岩含水层、奥陶系灰岩含水层和岩溶陷落柱等多方面的影响。依据多种探查方法,对3011工作面突水危险性进行了综合评价。研究结果表明,煤层顶板突水可能性极小,对生产影响不大;煤层底板发现有3处富水性较强地段,但均无奥灰水特征,在无大型导水通道的情况下,突水可能性较小;工作面两侧的陷落柱对工作面一般不构成突水威胁。更多还原

【Abstract】 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.更多还原