砂浆锚杆的锚固及失效机理研究

Study on Anchorage and Failure Mechanism of Mortar Bolt

岩土锚固能调用和提高岩土的自身强度和自稳能力。本文在对工程实际情况作了一些简化的基础上 ,在实验室内模拟了砂浆锚杆的锚固及失效过程 ,推导出了轴对称条件下弹性围岩内锚杆杆体受力的解析表达式 ,并应用声波透射法初步探讨了锚固应力与声学参数的相关性。

Anchorage system can transfer or enhance intensity and steady ability of the geotechnical project. Based on the simplification of a project, the process of anchorage and failure of bolt is simulated in laboratory. The analytical expressions of stressed bolt in elastic rock under axial symmetry condition are deduced. The pilot study of the relativity of anchorage stress and acoustic parameter is discussed by ultrasonic transmission way in this paper.