摘要
本文介绍了七五煤矿悬移支架放顶煤工作面顶煤破碎冒落规律，叙述了顶煤爆破和松动方法及参数优化，此法是煤质较硬煤层放顶煤面控制块度，提高回收率的一种有效方法。
This paper introduced laws of the breaking and falling of top coal in a sublevel caving face of the 3 upper coal seam by suspended brace supports in Qi Wu Coal Mine, described the blasting and standing shot method in top coal and its parameter eptimization.Thismethod is a kind of effective method of controlling the fragmentation degree of caving coaland increasing recovery rate of a sublevel caving face in hard coal seam.
出处
《山东矿业学院学报》
CAS
1994年第4期343-348,共6页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
回采工作面
放顶煤
悬移支架
爆破参数
coal face
coal recovery rate
shock blasting
parameters
sublevel caving
suspended brace supports
blasting parameters.
