大安山煤矿后槽动力显现原因

Da Anshan mine appeared after tank power analysis

为揭示急倾斜煤层开采过程中常发生的动力显现原因,以大安山煤矿后槽区域急倾斜煤层开采为研究对象,通过现场地质调查及地质条件分析,得出后槽区域主要受大寒岭倒转背斜的影响,使该区域的煤层倾角、厚度变化较大,在原岩体内积存大量的构造应力,在开采过程中,构造应力突然释放,致使动力显现。这为动力显现防治提供依据,保证煤矿的安全开采。

To reveal the reason of dynamic pressure behavior occur frequently during the mining of steeply inclined coal seam in the hinter deep region of Daanshan Colliery,the paper uses analytical methods of numerical simulation,surveys the geology and analyzes geological conditions.Because the backshore area subjects to the overturned anticline of Dahan Ridge,the change of inclination and thickness of coal strata becomes big.In the mining process,the tectonic stress suddenly releases and causes the significant dynamic effect because of a large amount of tectonic stress in-situ rock mass.It provides basis for preventing and curing to ensure safe exploitation of colliery.