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综放开采过断层顶板破坏规律数值模拟

Energy Technology and Management(2008)

Cited 4|Views10
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Abstract
通过数值模拟断层影响下不同推进方向厚煤层综放开采引起的顶板破坏情况,得出了综放开采过断层时顶板破坏规律。模拟结果表明,无断层时,导水裂隙带高度形态为"马鞍"型,在靠近停采线的位置导水裂隙带高度最大;断层存在时,导水裂隙带高度比无断层时明显增大,是无断层时的150%~175%;当工作面推进方向与断层倾向相同时,靠近断层面时导水裂隙带高度达到最大;当工作面推进方向与断层倾向相反时,过断层40 m处导水裂隙带高度达到最大。
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