Tunnel Structure Safety Monitoring System Based on BOTDA Technology

Abstract:

The structure of the power tunnel is unique as a special place. It is built under the surface of the earth crust,belongs to half-hidden project. In recent years, affected by operating life, geological conditions, design and construction, the number of the tunnels which has structural safety risks apears more and more, so the safety of the tunnel structure always has been a very important issue of construction, operation and maintenance. This paper presents a tunnel structure safety monitoring system based on BOTDA technology.This system has good adaptability to the scene, and can remotely monitor the structural safety of the tunnel in real time, and it also has advantages of distribution, long-distance, high-precision, etc.

• Periodical: Applied Mechanics and Materials (Volume 621)
• Pages: 281-284
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.621.281
• Online since: August 2014
• Authors: Xiao Juan Li*, Fan He, Yu Bo Wang, Bin Zhang, Xiao Bin Liang
• Keywords: BOTDA, Structure Safety, Tunnel

References

[1] Y.H. Wu, H.W. Cai and H.W. Liu. Study on Engineering Applicability of Optic Fiber Crack Sensing[ J]. Journal of optoelectronics: Laser, 2007, 18( 12): 1438-1441.

[2] C.H. Liang, B. Shi and H.Z. Xu. BOTDR Optic Fiber Temperature Monitoring Technique and its Application in Civil Engineering [ J]. Journal of Disaster Prevention and Mitigation Engineering, 2004, 24( 3): 252-255.

[3] B. Guo, Q.M. Sui, B. Wei. The Development of Brillouin Scattering Distributed Optic Fiber Sensor［J］． Information Technology and Informatization，2009，(3): 56-58.

[4] J.S. Li, Y. Jiang, S.L. Huang. A Novel Technology for Measurement of Tensile Strain Distribution in Optical Cable Brillouin Optical Fiber Time Domain Analysis Technique [J]. Semiconductor Optoelectronics, 1996, 17 (1): 56-59.

[5] Y. Ding, B. Shi and X.Y. Bao. Jacket Effect on Strain Measurement Accuracy for Distributed Strain Sensors Based on Brillouin Scattering[J]. Optica Applicata, 2006, 36(1): 57-67.

[6] H. Murayama, K Kageyama, and H. Naruse. Distributed Strain Sensing from Damaged Composite Materials Based on Shape Variation of the Brillouin Spectrum[J]. Journal of Intelligent Material Systems and Structures, 2004, 15(1): 17-25.

DOI: 10.1177/1045389x04039263

[7] H.N. Li, D.S. Li and G.B. Song. Recent Applications of Fiber Optic Sensors to Health Monitoring in Civil Engineering[J]. Engineering Structures, 2004, 26(11): 1647-1657.

DOI: 10.1016/j.engstruct.2004.05.018

[8] D. Zhang, H.Z. Xu and B. Shi. Brillouin Power Spectrum Analysis for Partially Uniformly Strained Optical Fiber[J]. Optics and Lasers in Engineering. 2009(47): 976-981.

DOI: 10.1016/j.optlaseng.2009.04.008