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中文摘要：
采空区规模的不断扩大,给矿山安全生产带来了极大的威胁。应用数值模拟方法,能够系统地分析采空区周围岩体的应力分布规律和变形趋势,鉴于拉格朗日算法的FLAC 3D程序适合于求解岩土力学工程中非线性的大变形问题。以石人沟铁矿为工程背景,运用FLAC 3D对采空区的稳定性进行了数值模拟分析,并得到空区围岩的应力应变分布规律,对空区的稳定性进行了科学分析与评价,提出了应及时处理采空区的建议。
英文摘要：
The expanding scale of the mined cavity imposes great threa（tomine safety production/The application of numerical simulation can be effective to systematically analyze stress distribution regularities and deformation trends of the rock mass surrounding the cavity. The Lagrangian algorithm based FLAC 3D software is suitable for solving the large nonlinear deformation problems in rock and soil mechanics engineering. With Shirengou iron mine as the engi- neering background,the cavity is numerically simulated on its stability using FLAC 3D, obtaining the regularities of stress-strain distribution of the surrounding rocks. The stability of the cavity is analyzed and evaluated and the suggestion that the mined cavity be time!y dealt with is put forward.
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