低位综放开采顶煤放出的散体介质流理论与应用

The loose medium flow field theory and its application on the longwall top-coal caving

由于放煤口布置方向的差异 ,放矿椭球体理论的适用条件与低位放煤综放开采的放煤过程有本质差异 ,因此基于模拟试验、FLAC计算、离散元模拟计算和现场观测 ,提出了散体介质流理论模型 ,揭示了低位综放开采中顶煤流动与放出的真实过程 。

Because of the different distributions of running coal windows, there is a basic difference between the condition of the running ore ellipse ball and the running top coal process of top coal caving. The paper establishes a loose medium flow field theory on running top coal. It shows the true process of top coal flow on longwall top coal caving. This theory has been used to calculate the running coal technique and parameters in situ.