东圪堵煤矿6-2号煤层放顶煤开采可行性分析

分析了东圪堵煤矿6-2号煤层埋深、煤层裂隙、煤层夹矸情况、顶板情况、采放高度比等情况,指出6-2号煤层的顶煤冒放性一般,通过数值模拟,得出顶煤有明显的滞后垮落现象,顶煤回收率较低,因此东圪堵煤矿6-2号煤层不宜采用综采放顶煤开采的结论。

Analysis on the Feasibility of Top Caving Coal Mining of No.6-2 Coal Bed in Donggedu Coal Mine

This paper analyzes the coal bed buried depths,coal bed fractures,mingled gangue in coal bed,roof situation,and the ratio of mining height to caving height,etc.of No.6-2 coal bed,points out that the caving property of top coal of No.6-2 coal bed is so so,and through the numerical simulation,draws a conclusion that the top coal has obvious lagged caving phenomenon,and the recovery rate of top coal is lower,therefore the fully-mechanized mining is not suitable for No.6-2 coal bed of Donggedu Coal Mine.