摘要
分析了徐州东部矿区二叠系下石盒子组 3#煤煤层特征以及对综采放顶煤工艺的控制作用 ,阐述了这种“三软”煤层所导致的特殊放煤方式和放煤效果。
The characteristics of coal seam No.3 of Permian Shihezi Formation in the eastern Xiuzhou are analyzed,and their control on combined caving technology is studied.It is described that the caving method and effects caused by the coal seams characterized by soft roof,soft floor and sotf seam.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2001年第2期19-20,共2页
Coal Geology & Exploration
