煤矿上行开采覆岩运动规律研究
Journal of Xi'an University of Science and Technology(2011)
Abstract
为了有效开采煤炭资源,具有3层可采煤层的煤矿拟采用上行开采方法,通过相似模拟实验及数值模拟计算,得出5-2煤开采后覆岩运动规律,结合"三带"判别法、比值法、围岩平衡法等理论分析得到冒落带高度是6倍采高18m,裂隙带高度是18倍采高54m,4-2煤顶底板岩层最大裂隙10cm,裂隙在下沉带盆底闭合,得出该矿4-2煤上行开采是可行的。
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Key words
overlayer strata,ascending mining,resemble simulation
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