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为了深入研究土层锚杆可能出现的各种病害及原因,有针对性地提出防治措施,进行了室内模型试验。根据试验结果分析了在水的作用下土层锚杆破坏时的应力传递过程,提出土层锚杆发生破坏时所遵循的逐次破坏的突破观点。首先失效的是坡顶锚杆,其次是坡脚的锚杆,最后才是坡体中部的锚杆。并对破坏时土层锚杆发生的6种病害形式进行了详细论述及原因分析:灌浆体和土体界面的破坏、土体的破坏、锥体-黏结复合破坏、锥体破坏、灌浆体的拉裂和压碎、灌浆体与杆体之间的黏结破坏。在综合分析的基础上,提出了土层锚杆常见病害防治的几个关键性对策。
In order to deeply study the various diseases and causes that may occur in the soil anchor, the prevention and cure measures are pointed out and the indoor model tests are carried out. Based on the experimental results, the stress transfer process under the action of water under the action of water is analyzed, and the breakthrough viewpoint of the destruction of the soil anchor is proposed. The first failure is the top of the rock bolt, followed by the foot of the rock bolt, the last is the bolt in the middle of the slope. And the six kinds of disease forms of soil anchor during the destruction are discussed in detail and the reasons are analyzed: the interface of the grouting body and the soil, the destruction of the soil, the destruction of the cone-bond, the destruction of the cone, Cracking and crushing, bonding between the grout body and the rod damage. Based on the comprehensive analysis, several key countermeasures to prevent and control common diseases of soil anchor are proposed.