薄基岩浅埋深条件下地表移动变形规律数值模拟研究

Numerical Simulation Research on Surface Movement Laws of Mining Shallow-buried Coal Seam Under Thin Bedrock

借助数值模拟分析的手段,揭示了薄基岩浅埋深下开采地表移动变形机理,通过对数值模拟结果与实测数据的分析比较,验证了数值模拟的可行性。同时探讨了深厚比和基载比对地表移动规律的影响,并通过回归分析,建立了深厚比和基载比与下沉系数的函数关系。

The article revealed the mechanism of mining surface movement deformation under the condition of thin bedrock and shallow buried depth mining with the method of numerical simulation analysis,and verified the feasibility of numerical simulation by comparing the numerical simulation results with measured data. In the meantime,the impact of ratio between mining depth and mining thickness, the ratio of bedrock thickness on the strata and surface movement and loose layer thickness are discussed. What＇s more,based on the regression analysis,the relationship between sinking coefficient and the ratio of depth and thickness,the ratio of bedrock thickness and loose layer thickness are established.