【摘要】 此文下部分主要分析了放顶煤顺序、放煤步距、放煤口高度与回采率含矸率的关系。更多还原

【Abstract】 This paper has a brief introduction on the caving principle of the sublevel caving mining method; detail analysis on the relationship between the coal caving process, recovery and refuse rate; the relationship between the sublevel caving rate; recovery and refuse rate and the relationship between the sublevel caving height and recovery.It has shown how to prevent mine hazards as water, fire and gas.更多还原