柠条塔煤矿叠置开采地表岩移参数分析
Analysis of Surface Rock Movement Parameters in Ningtiaota Coal Mine Superimposed Mining
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摘要: 针对柠条塔煤矿在黄土沟壑地形条件下的地表岩移参数求取问题，通过建立地表岩移观测站，计算出其超前影响距和超前影响角、最大下沉速度、滞后角及地表移动持续时间。并利用坡体稳定性分析及计算机反演模拟的方法，对概率积分参数进行修正，修正后的概率积分参数与实测结果相吻合。研究表明：在黄土沟壑地形条件下求取地表岩移参数时需考虑坡体稳定性及其滑移附加量的影响。Abstract: Aiming at the issues of striking for the parameters of surface strata movement in loess gully region in Ningtiaota Coal Mine, through establishing the surface rock movement observing station, we figure out its advanced influence distance, advanced influence angle, the maximum subsidence velocity and the delay angle and duration time of surface movement. In the meantime, using the way of analyzing the slope stability and computer simulation inversion, we revised the probability integration parameters and the parameters are consistent with the actual measurement results. The research shows that we need to consider the impact of the slope stability and the additional amount of slippage during striking for the parameters of surface strata movement in loess gully regions.
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