围压作用对锚杆支护性能的影响分析

Analysis of the Influence of Surrounding Pressure on the Performance of Anchor Bolt Support

锚杆进行巷道支护的过程中,受到围压作用的不同,对锚杆的支护性能产生不同的影响。对不同围压作用下的锚杆支护性能进行实验测试分析。结果表明,当围压在一定范围之内增加时,可以提高锚杆的锚固力,且围压的增加率越高,锚固系统的性能提升越显著。锚杆支护性能最佳的阶段发生在弹性变形阶段,此时锚杆的抗拔力处于极值。

During the process of roadway support with anchor rods,different confining pressures have different effects on the support performance of the anchor rods.Conduct experimental testing and analysis on the performance of anchor rod support under different confining pressures.The results indicate that when the confining pressure increases within a certain range,the anchoring force of the anchor rod can be improved,and the higher the increase rate of confining pressure,the more significant the performance improvement of the anchoring system.The optimal stage of anchor rod support performance occurs during the elastic deformation stage,where the anchor rod's pull-out resistance is at its extreme value.