摘要
针对淮北矿区近距离煤层,煤层极软、构造复杂、近距离煤层的夹层不稳定、煤层厚且不稳定的条件,根据围岩控制理论,研制了ZF6800/19/38型放顶煤液压支架。工业试验期间,工作面过落差2～8m的断层3条,大幅度提高煤层开采效益,实现了安全高效开采。
For the special geological conditions of close coal seams including soft and thick coal, complex tectonics, unstable interlayer between close coal seams, ZF6800/19/38 caving powered support is developed based on surrounding rock control theory. During test mining, full-mechanized caving mining face past through 3 faults with 2 - 8m drop height. Coal mining profit increased largely and safety and high-effect is realized.
出处
《煤矿开采》
北大核心
2009年第1期5-8,共4页
Coal Mining Technology
关键词
极软
近距离煤层
构造复杂
大采高综放
围岩控制
液压支架研制
extremely soft
close coal seams
complex tectonic
full-mechanized caving mining with large mining height
surroundingrock control
development of powered support
