门克庆煤矿强动压工作面矿压显现规律研究
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摘要
门克庆煤矿采场上方存在17. 68 m的中细砂岩基本顶,对工作面回采期间顶板来压起主要影响作用,且存在悬顶可能,顶板易聚集大量弹性能,当能量积聚达到顶板破断条件时,储存的弹性能瞬时释放,引起强烈矿山震动。结合门克庆煤矿地质条件以及FLAC~(3D)数值模拟分析,研究了强动压工作面矿压显现规律。
The basic roof of 17.68 m medium-fine sandstone exists above the stope of Menkeqing Coal Mine,which has a major effect on roof pressure during mining, and there is a possibility of overhanging roof. The roof is easy to accumulate a large amount of elastic energy. When the energy accumulation reaches the condition of roof breakage, the stored elastic energy is released instantaneously, which causes strong mine vibration. Combining with the geological conditions of Menkeqing Coal Mine and FLAC~(3D) numerical simulation analysis, the rock pressure appearance law of high dynamic pressure working face was studied.
The basic roof of 17.68 m medium-fine sandstone exists above the stope of Menkeqing Coal Mine,which has a major effect on roof pressure during mining, and there is a possibility of overhanging roof. The roof is easy to accumulate a large amount of elastic energy. When the energy accumulation reaches the condition of roof breakage, the stored elastic energy is released instantaneously, which causes strong mine vibration. Combining with the geological conditions of Menkeqing Coal Mine and FLAC~(3D) numerical simulation analysis, the rock pressure appearance law of high dynamic pressure working face was studied.
引文
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