摘要
基于巷道掘进过程中围岩应力变化、支护与围岩变形的关系,探讨了让压锚杆(索)的支护作用机理。提出了一种新型让压减震装置,对其结构特点、变形特性进行了试验分析,结果表明装置不仅可实现让压功能,同时具有冲击荷载作用下减震的作用,避免锚杆(索)因应力过大而破断的问题,更加有利于巷道围岩的整体稳定。
Based on surrounding rock stress changes caused by the roadway tunneling and the relationship between support and sur- rounding rock deformation, the support mechanism of yield bolt （cable） was discussed. A new type of yield -damping equipment, its structural characteristics of deformation characteristics were analyzed by experiment. The results show that the device can not only real- ize the yield function, but also has damping function under impact loading and avoiding breaking due to excessive stress on the bolt （cable） , which is more conducive to the overall stability of surrounding rock.
出处
《煤矿安全》
CAS
北大核心
2014年第3期28-30,34,共4页
Safety in Coal Mines
关键词
锚杆(索)
让压减震
变形特性
围岩应力
巷道支护
bolt （cable）
yield - damping
deformation characteristic
surrounding rock stress
roadway support
