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Secondly, experiments are carried out to study the granular flow characters considering the size of drawing hole, size of grain and type of material by index grain method.

分析了影响散粒体流动性能的因素,采用标志颗粒法进行了崩落矿岩散粒体流动性能试验,主要考虑的因素有放矿口大小、散体颗粒的粒径以及不同的散体材料。

The ore-drawing courses under different ore-drawing-hole spacing are studied with computer simulation.

利用计算机模拟研究了不同放矿口间距下的放矿过程。