石窑店煤矿近距离煤层上行开采可行性研究

Feasibility Study on Ascending Mining in Close Distance Coal Seam in Shiyaodian Coal Mine

针对石窑店煤矿首采区3^(-2)煤层已采区域上部2^(-2)煤层的开采问题,基于煤层赋存条件和开采现状,通过理论计算得出,冒落带高度9.8 m,为采高的4倍,裂隙带高度43.75 m,为采高的19.4倍。采用数值模拟方法分析3^(-2)煤层开采后对2^(-2)煤岩层结构性的影响。理论分析和数值模拟结果验证了上行开采可行性。

In view of the mining problem of 2^-2 coal seam in the upward mining area of 3^-2 coal seam in the first mining area of Shiyaodian coal mine,based on the occurrence conditions of coal seam and the status quo of mining,by theoretical calculation,height,the height caving zone is 9.8 m,which is four times as high as mining height,the height of fracture zone is 43.75 m and 19.4 times as high as mining height. The influence of lower coal seam mining on structural property of upper strata is simulated.Theoretical analysis and numerical simulation verify the upward mining feasibility.