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地下煤层的开采,破坏了周围岩石的平衡状态,引起它们的移动和变形,本文根据开滦范各庄矿在七个钻孔内获得的煤层上覆岩层被初次采动的实测资料,分析了采空区上覆岩层的垂直移动和变形分布规律。一、观
The exploitation of underground coal seam destroys the balance state of the surrounding rocks and causes their movement and deformation. Based on the measured data of overlying strata in the coal seams obtained from seven boreholes of the Fanquzhuang mine in Kailuan, Vertical movement and deformation distribution of overlying strata in goaf. First, the concept