基于弱光栅技术隧道深层围岩实时监测应用

Application of Real-Time Monitoring of Deep Surrounding Rock of Tunnel Based on Weak Grating Technology

隧道在开挖施工过程中对围岩变形的动态掌握关乎着隧道施工的安全性和效率性。本文在通过查阅相关文献资料并结合相关领域科研人员研究成果基础上,利用弱光栅技术对隧洞深层围岩变形进行动态监测,并综合对比传统监测方式得出结论:平阳引水隧洞围岩变形符合正常范围,围岩稳定性总体上较好,同时弱光纤光栅感测光缆监测结果与传统监测结果基本一致,符合现场事实情况。同时,本文监测方案和监测结果可以为其它类似过程监测提供数据参考和理论依据。

The dynamic control of surrounding rock deformation during tunnel excavation is related to the safety and efficiency of tunnel construction. On the basis of consulting relevant literature and combining the research results of researchers in related fields, the dynamic monitoring of the deformation of the deep surrounding rock of the tunnel is carried out by using the weak grating technology, and the conclusion is drawn by comprehensively comparing the traditional monitoring methods: The deformation of the surrounding rock of Pingyang diversion tunnel conforms to the normal range, and the stability of the surrounding rock is generally good. At the same time, the monitoring results of the weak fiber grating sensing optical cable are basically consistent with the traditional monitoring results, which conform to the actual situation on the site. At the same time, the monitoring scheme and monitoring results in this paper can provide data reference and theoretical basis for other similar process monitoring.