摘要
顶底板赋存含水层的煤系地层在采煤影响下可能因导水裂隙的发育而导致突水危险。采用平面模拟的方法,通过实验室相似模拟试验,对某井田采煤过程中覆岩变形与破坏规律进行了模拟试验研究,获得了上覆岩层应力的分布以及随开采面推进的发展规律,结果表明,在本模拟条件下煤层开采导致上部覆岩破裂带触及上部含水层,因此需采取必要措施,以确保安全生产。
Under the influence of mining activity, because of the development of water-diversion fracture zone the danger of water-inrush may exist in coal-measure strata in roof and floor of which there are water-bearing strata. The physical simulation experiments have been done with the plane models to study the deformation and failure law of overlying stratum in the process of mining coal in a certain coal min. The distribution law of the stress in the overlying stratum and the development law of the stress chaoging with the advance of mining front had been acquired. The results showed that under the simulated condition the fracture zone caused by mining coal seam has touched upper the water-bearing stratum, so it is necessary to take measures to ensure the safety in production during the mining activity.
出处
《矿业研究与开发》
CAS
北大核心
2005年第2期27-30,共4页
Mining Research and Development
关键词
煤层
覆岩
导水裂隙带
岩层应力
相似模拟
Coal seam, Overlying rock, Water-diversion fracture zone, Strata stress, Similar simulation
