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基于概率积分法和计算机分析软件,将开采沉陷预测方法应用于综采放顶煤开采中,研究了地表下沉盆地的形成过程,探讨覆岩移动规律并提出了开采沉陷对地表的影响方式。基于数值模拟方法对88301工作面开采沉陷影响进行分析,利用FLAC3D软件对岩层状态进行分析和处理,对综放采场覆岩的受力破坏过程进行了模拟,直观反映出开采沉陷对岩层与地表影响程度及范围。通过与地表观测数据实际情况的对比分析,验证分析结果的适用性,研究结果对综放采场岩层控制有参考价值。
Based on the probability integral method and computer analysis software, the mining subsidence prediction method is applied to the fully mechanized top coal caving mining. The formation process of surface subsidence basin is studied, the law of overlying strata movement is discussed, and the influence of mining subsidence on the surface is proposed. Based on the numerical simulation method, the influence of mining subsidence on 88301 working face was analyzed. The status of rock strata was analyzed and treated by FLAC3D software. The stress failure process of overlying strata in fully mechanized caving mining was simulated, which directly reflected the influence of mining subsidence on the formation and surface Impact and extent. Through the comparison with the actual situation of the surface observation data, the applicability of the analysis results is verified, and the research results have reference value for the strata control of fully mechanized caving mining stope.