摘要
螺旋钻采工艺具有安全性高、工艺简单、系统环节少、掘进率低、材料消耗低等特点,在0.9m以下的极薄煤层开采中效益显著。
The auger picks the craft to have the security high, the craft simple,the system link few, the drivage ratio low, the material consumption low status a little,The benefit is remarkable in 0.9m following side flfin coal bed mining.
出处
《山东煤炭科技》
2008年第1期123-123,140,共2页
Shandong Coal Science and Technology
关键词
钻采
工艺
经验
效益
bench dril technology experience effectiveness
