摘要
采用有限元模型分析方法,对层状顶板煤巷预应力锚杆支护顶板离层进行了数值模拟,分析了无支护和预应力锚杆支护下围岩的应力和变形情况。结果表明,预应力锚杆支护可以显著提高围岩的稳定性,有效地控制煤巷顶板变形。
Numerical Simulation was carried out on the separate layers of roof supported by pre-stressed rock bolts in coal roadway with finite element model analysis method, and the stress and deformation of surrounding rock under conditions without support and with pre-stressed bolt support were analyzed. The results showed that the pre-stressed bolt support can markedly increase the stability of surrounding rock and effectively control the deformation of coal roadway roof.
出处
《矿业安全与环保》
北大核心
2008年第5期47-49,共3页
Mining Safety & Environmental Protection
