【摘要】 讨论了无底柱分段崩落法放矿结构参数和岩石混入过程 ,说明在分段高度和进路间距一定的情况下 ,步距过小或过大对岩石混入率有很大的影响 ;同时 ,利用SLS系统对某矿山的放矿结构参数进行模拟实验 ,得出在特定的分段高度和进路间距条件下的步距优值范围 ,为采矿实践提供科学依据。更多还原

【Abstract】 The ore-drawing structural parameters and the rock mixing proces in pillarless sublevel caving were studied. It was shown that with the sublevel height and the between-drift space being certain, too small or too large drawing pace would have great effect on the rock mixing rate. Meanwhile, SLS system was used in the simulation test of the ore drawing structural parameters of a mine. An optimized pace range (3～ 4 m) was obtained under specified sublevel height (15 m) and between-drift space (20 m), providing a scientific basis for the mining practice.更多还原