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以某矿首采工作面为工程背景,利用FLAC~(3D)数值模拟软件对大采高开采的采场应力分布规律特征进行了研究。通过对不同采高下首采工作面的开采分析,得出了不同采高下采场支承压力的峰值点应力集中系数和影响范围的分布特征。得到了在大采高条件下工作面不断推进时工作面周围岩体的塑形破坏规律。
Taking the first mining face of a mine as the engineering background, the stress distribution regularity of stope with large mining height was studied by using FLAC 3D numerical simulation software. Based on the analysis of the first mining face with different mining height, the stress concentration factor and the distribution of the influence range of the peak pressure of supporting stratum under different mining height are obtained. The law of the plastic deformation of the rock mass around the working face is obtained when the working face is continuously advanced under the condition of large mining height.