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为了研究河流下综放工作面开采的覆岩破坏特征,防止突水溃沙,以山西某矿综采工作面的相关地质条件为背景,应用FLAC3D建立数值模拟模型,对工作面覆岩应力分布和塑性屈服区发育特征进行分析,得出了该工作面两侧煤柱附近出现应力集中,中部覆岩出现卸压区,覆岩导水裂隙带发育最大高度62 m。
In order to study the characteristics of overlying strata mining in fully mechanized caving face under river and to prevent water inrush from water inrush, a series of numerical simulation models were established by FLAC3D based on the relevant geological conditions of a fully mechanized mining face in Shanxi Province. The stress distribution And plastic yield zone. The results show that stress concentration occurs near the coal pillar on both sides of the working face, pressure relief zone appears in the middle overburden rock, and the maximum height of water-bearing fractured zone in overlying strata is 62 m.