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中文摘要：
覆岩运动规律对导水裂隙带发育高度具有决定作用,基于对鲁西煤矿露头区域工作面覆岩运动岩石破裂事件的井下微地震监测定位的研究,结果表明,露头煤层开采与深部煤层开采具有不同的覆岩运动规律,覆岩导水裂隙带高度降低30%左右,导水裂隙带分布形态不再具有马鞍型对称的特点。最后根据露头区域煤层开采覆岩运动变异规律,提出了其在露头防水煤岩柱设计中的方法。
英文摘要：
The movement law of the overburden strata has a decisional role to the development height of the water conducted fissure zone.Base on the research on underground micro seismic monitoring and measurement positioning of the overburden strata broken accident in coal mining face in outcrop seam area of Luxi Mine, the research results showed that the coal mining in the outcrop seam would have a different overburden strata movement law to the coal mining in deep seam of the mine.When the height of the water condu...
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Design and optimization of the mining method of boundary coal-pillars with high recovery ratio and h
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