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在强冲击大变形巷道支护中,锚杆、锚索是否联合协调防冲支护,不仅关系巷道在施工期间的安全,还直接影响巷道支护的长期安全性。结合锚杆、锚索联合对强冲击大变形巷道进行支护时容易普遍出现锚杆、锚索破断的问题,介绍了适合于强冲击大变形巷道支护的大变形锚杆(索)的主要结构特点及其让压性能,并对锚杆、锚索协调防冲原理和设计准则进行了研究分析。在此基础上,通过对大变形锚杆(索)的实验研究,给出了不同冲击条件下大变形锚杆(索)实验设计方法。研究结果对今后强冲击大变形巷道的支护设计施工有一定的参考价值。
In strong impact large deformation roadway support, whether anchor bolt and anchor cable coordinate and defend and support are not only related to the safety of roadway during construction, but also directly affect the long-term safety of roadway support. In combination with bolt and anchor cable, it is easy to break the bolt and anchor cable easily when it is supported by strong impact and large deformation roadway. The main deformation bolt (cable) suitable for strong impact and large deformation roadway support is introduced Structural characteristics and let pressure performance, and the anchor and anchor cable coordination principle and design criteria for research and analysis. On this basis, the experimental design method of large deformation anchor (cable) under different impact conditions is given through the experimental study on the large deformed anchor rod. The research results have certain reference value for the support design and construction of large deformation tunnel with strong impact in the future.