Utilizing the acoustic wave's characteristics, we can detect the interior structure and quality of the anchor system and, judge the anchorage state by beating the anchor bar's top with a hammer.

利用振动波传播具有的许多独特性质，可以在锚杆表面人工激发应力波来探测锚杆体系内部的结构和性质，以此来判断锚杆的锚固状态。

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Research results: The basic calculation method for foundation of rock anchor rod for overhead contact wire system, (foundation) structure and its construction method are put forward.

研究结果：提出接触网支柱岩石锚杆基础计算方法，基础构造及施工做法。

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However, because of materials, construction, geological conditions and other factors, there is bound to be much damage in anchor structure of the system during the construction process.

然而由于材料、施工、地质条件等因素的影响，锚固结构系统在施工和使用过程中必然存在许多损伤。

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