APPLICATION OF FIBER BRAGG GRATING SENSOR TECHNOLOGY IN HIGHWAY TUNNEL SURROUNDING ROCK DEFORMATION AND REAL-TIME MONITORING

The monitoring environment is complex for highway tunnel engineering, and monitoring objects are constrained by time and space limits as well as construction environment. It is difficult to realize the remote and real-time dynamic monitoring by using the monitoring method based on traditional mechanical and electrical testing technology. Combining the real-time monitoring database of Zhang Zhuo high-speed east Magezhuang tunnel engineering, and using optical fiber sensing technology, remote and real-time monitoring is realized. By sorting the monitoring data, the surrounding rock deformation, stability time, and deformation rate in different levels are obtained. The surrounding rock stability are improved, and it has a great guiding significance for similar projects.