摘要
本文介绍了在破碎带岩层中,先预先在固结岩层内打超前锚杆,防止工程围岩松动、冒落或倒塌,使斜坡道轮廓线形成岩石围壁,确保工人可在安全可靠的工作条件下进行钻眼爆破工作。然后,采用径向锚杆、喷混凝土、内置拱型槽钢、浇混凝土等,达到永久支护的目的,实践表明,该联合支护方法、技术经济合理,安全可靠性强。
As for underground engineering,it is the most important to prevent its enclosing rock from collapse,and keep it stability.In this article,how to cut and support in surrounding fractured rock,a way is introduced as follow： Using forepoling bolt,it reinforce the roadway＇s outline,where the worker can drive and cut in safety,then,permanent supporting such as radial bolting,shotcreting,U-shape channel beam in filling concrete.The practice shows that a engineering example,shows the way is economical and safe.
出处
《中国矿业》
北大核心
2010年第1期75-76,81,共3页
China Mining Magazine
基金
国家安全生产科技发展计划项目(编号:05-376)
关键词
超前锚杆
破碎带
联合支护
斜坡道
围岩
forepoling bolt
fracture strata
conjoined supporting
ramp
surrounding rock
