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村庄下采煤是涉及到控制地表沉陷的技术难题,受条带开采采动造成的上覆岩层活动对地表移动有着极大地影响。采用物理模拟方法对开采引起的覆岩运动规律进行分析,以及使用数值模拟方法对地表变形情况进行研究。结果表明,采宽60 m留宽70 m“三带”高度比采宽50m留宽70 m增加了58%,地表移动和变形各项参数的最大值增加了30%以上,为合理确定条带开采参数提供有利的依据。
Mining under the village is a technical problem that involves the control of surface subsidence. The overlying strata movement caused by strip mining has a great impact on the movement of the earth’s surface. Physical simulation method is used to analyze the law of overlying strata movement caused by mining, and the numerical simulation method is used to study the deformation of the ground surface. The results show that the width of 60 m wide and 70 m wide is 70 m. The height of “three belts” is increased by 58% over the width of 50 m and the width of 70 m. The maximum of the parameters of surface movement and deformation increases by more than 30% Strip mining parameters provide a good basis.