巷道支护中锚杆锚固长度不同时的锚固性能分析

Analysis of Anchorage Performance with Different Anchorage Length in Roadway Support

鉴于锚杆锚固长度的不同对于锚固性能具有重要的影响,采用数值仿真的方式对不同锚固长度时的锚杆的应力及围岩的应力进行分析。结果表明,在锚杆支护时要结合围岩等特征进行选取锚固长度,同时,在锚固的起始段要加强锚固强度,以有效地提高锚固性能。

The different anchoring length of anchor rod has important influence on anchoring performance.The stress of anchor rod and the stress of surrounding rock at different anchoring length are analyzed by numerical simulation.The results show that the anchoring length should be selected synthetically with the characteristics of surrounding rock,and the anchoring strength should be strengthened for the initial section of anchoring,so as to effectively improve the anchoring performance.