摘要
诠释了煤矿巷道端头锚固锚杆抽射的概念,采用断裂力学和弹性力学的方法分析了发生锚杆抽射的力学机理,提出了锚杆断裂后由锚孔射出的动能由两部分组成(一部分来自锚固锥内岩体积聚的弹性能,另一部分来自锚杆受轴向载荷作用储存于杆体内的弹性能),并给出了锚杆射出部分的动能计算方法。
The paper explains the concept of end anchorage and anchor injection of roadways.The fracture mechanics and elastic mechanics are used to study the injection mechanism.It also proposes that the kinetic energy consists of two parts injected from anchoring holes after the breaking: one part comes from the elastic energy accumulated in the anchor cone,while the other from the elastic energy stored inside the rods caused by axial load.Besides,the calculation method for the kinetic energy is presented.
出处
《山西煤炭》
2012年第5期62-64,共3页
Shanxi Coal
关键词
端部锚固
锚杆抽射
断裂力学
弹性能
锚固锥
end anchorage
anchor injection
fracture mechanics
elastic energy
anchor cone
