摘要
冷泉副井基岩段采用周边辅助眼新工艺，克服了FJD－6型伞钻动臂支撑范围小造成井帮超欠挖的缺点，并在周边辅助眼工艺基础上，采用锅底形中深孔光底爆破新技术，加快了清底时集碴、集水速度，取得了良好的经济效益．
The application.of the lately technique (perimeter auxiliary holes) to the construction at the basement rock region of Lengquan auxiliary shafts has avoided the disadvantage caused by using the FJD-6 umbrellar drillers. Based on the perimeter auxiliary hole technique, the lately technique of pot-bottomshaped mid-deep hole smooth surface blasting has been adopted to speed up the construction for the collection of slags and water when clearing the floor.
出处
《焦作工学院学报》
1998年第6期409-414,共6页
Journal of Jiaozuo Institute of Technology(Natural Science)
关键词
周边辅助眼
竖井井筒
光底爆破
施工技术
矿井
perimeter auxiliary holes
pot-bottom-shaped mid-deep hole smooth surface blasting
record
technical benifit result
