东部矿区开采深度对地表移动参数的影响规律研究

    Influences of surface movement parameters due to mining depth in eastern mining area

    • 摘要: 目前我国很多东部矿区浅部煤炭资源逐渐枯竭,开采深度逐年增加,部分矿区已达到千米采深,矿区地表移动规律及其参数随采深增加发生了明显的变化。本文基于大量实测数据,分析比较了东部矿区深部开采条件下的地表移动参数与浅部开采的差异。结果表明:随着开采深度增加,边界角和移动角增大,下沉系数逐渐减小,而水平移动系数、主要影响角正切和拐点偏移系数均有所增大,得出了部分参数随宽基比、深厚比变化的规律,并建立了相应的拟合函数关系。

       

      Abstract: At present, the shallow coal resources in many eastern mining areas in China are gradually exhausted, and the mining depth is increasing year by year.Some mining areas have reached a mining depth of 1 kilometer.The law and dependent parameters of surface movement have changed obviously with the increase of mining depth.Based on a large number of measured data, this paper analyzes and compares the differences of surface movement parameters between deep mining and shallow mining in eastern mining area.The results show that with the increase of mining depth, the boundary angle and movement angle increase, the subsidence rate decreases, while the horizontal movement coefficient, the tangent of main influence angle and the migration coefficient of inflection point increase.The law of some parameters varying with width-to-depth ratio and depth-to-thickness ratio is obtained, and the corresponding fitting function relationship is established.

       

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