基于BOTDR的土质隧道深部围岩变形监测技术

为了解决土质隧道深部围岩变形实时连续监测的难题,在分布式光纤监测技术的基础上,采用模型设计、试验与应用工艺验证的方法,研究开发了一种用于测试土质隧道深部围岩变形的实时监测方法,得出了监测力学模型与监测方程,提出了传感器的制作、布设与安装方法以及系统集成与实时监测的工艺技术。对研究成果进行了工程实地应用验证,并取得了初步的应用效果。

Deformation Monitoring Technology for Deep Surrounding Rocks of Soil Tunnels Based on BOTDR

A new real-time deformation monitoring technology for deep surrounding rocks of soil tunnels is developed on basis of distributed optical fiber monitoring technology and by means of model design, testing and application technology verification, so as to realize the real-time continuous monitoring of the deformation of deep surrounding rocks of soil tunnels. The monitoring mechanical model and the monitoring equation are obtained; the manufacturing, arrangement and installation methods of the sensors, the system integration and the real-time monitoring technology are proposed. The study results have been testified in the field and good application effect has been achieved.