摘要
在分析采场顶板围岩力学过程的基础上，通过对顶板围岩的塑性区半径、松动区半径计算，来确定锚杆的有效长度和锚杆网度。采场试验表明，采用“先短后长”的锚杆支护技术和“先柔后刚”的锚杆群组支护结构，是解决采场顶板围岩支护的最好途径。
Based on the analyses of the mechanical process of ceiling surrounding rock in mining area,the effective length and reticular density of bolts can be determined by calculating the radius of plastic deformation area and flexible area in ceiling surrounding rock.The experimental data from mining area indicate that adopting short bolt before long one and flexible structure of bolt group support before rigid structure are the best way to solve the problem about the support of ceiling surrounding rock in mining area.
出处
《黄金》
CAS
北大核心
1999年第5期17-19,共3页
Gold
关键词
采场
锚杆支护
设计
计算
不稳定围岩
mining area
radius of plastic deformation area
radius of flexible area
effective length of bolt
