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本文利用有限元计算机模拟研究了水采采场周围的应力分布规律,着重探讨了顶板在煤体上方断裂前后的支承压力分布和不同的枪眼位置时的支承压力分布规律。研究结果表明,在塑性区掘进回采巷道引起的应力转移比在高应力的弹性区掘进回采巷道引起的应力转移要小得多,减轻水采矿压显现的关键是在低应力区掘进回采巷道和实行区段间交替回采。
In this paper, the stress distribution around the water mining field is studied by finite element computer simulation, and the supporting pressure distribution of the roof before and after the rupture of the coal roof is discussed emphatically. The results show that the stress transfer caused by tunneling in the plastic zone is much smaller than the stress transfer in the high stress elastic zone boring the mining roadway. The key to relieve the water pressure is to excavate the roadway and implement it in the low stress area Alternate mining between sections.