开采速度与地表动态下沉速度及加速度的关系模型研究

Research on the Speed and Surface Mining Subsidence Velocity and Acceleration of Dynamic Relationship Model

基于改进的Knothe时间函数模型与概率积分法建立了在半无限开采条件下与开采速度有关的地表动态下沉预计模型,并利用Matlab软件绘制出对应的关系曲线,分析了开采速度对地表动态下沉速度与加速度的影响,得出了一味提高开采速度并不能降低地表下沉速度,而应根据工作面的实际情况进行合理预计来确定最佳开采速度的结论。

Based on the improved Knothe time function model and the probability integral method, the dynamic prediction model ofsurface subsidence related to the mining speed under semi- infinite mining conditions is established. The corresponding relationshipcurves are drawn by Matlab software, and the effects of mining speed on surface dynamics Sinking velocity and acceleration, it is concluded that the increase of mining speed can’t reduce the surface subsidence velocity but should be based on the actual situation of theactual situation to determine the optimal mining speed.