论文部分内容阅读
介绍了杆体可拉伸锚杆的基本原理、力学特性及东庞煤矿特大断面(23～30m~2)切眼及大断面(16～19m~2)Ⅳ类回采巷道沿空掘巷应用后的支护效果及技术经济效益。
The basic principles and mechanics characteristics of the extensible anchor rod with rod body and the application of the gob-side entry driving along the goaf in the large section (23 ~ 30m ~ 2) and the large section (16 ~ 19m ~ 2) Support effect and technical and economic benefits.