摘要
为提高大断面切眼掘进速度和支护稳定性,避免二次扩掘对切眼围岩造成多次扰动,保证工程及施工安全,通过优化支护设计和施工工艺,采用切眼异形断面锚网索一次掘支成巷技术,减少了施工工序,提高了掘进速度,降低了支护材料消耗,改善了巷道围岩受力状态,提高了巷道支护稳定性。
In order to improve the large section cut excavation speed and support stability, avoid the multiple disturbances caused by the secondary expansion on the cut rock, ensure the safety of engineering and construction, the support design and construction technology is optimized, the cross-section anchor cable once driving roadwaytechnique is used, which reduced the construction process and improved the driving speed, reduced support material consumption, improved the surrounding rock stress state, improved the stability o froadway.
作者
杨胜学
YANG Sheng-xue(Gansu Yaojie Coal and Electricity Group Co. Ltd., Lanzhou 730080, Chin)
出处
《中小企业管理与科技》
2017年第33期166-167,共2页
Management & Technology of SME
关键词
大断面切眼
异形断面
一次掘巷
large section cutting hole
special-shaped section
once driving roadway