Research of Cable Tunnel structure Settlement sensor based on FBG Technology

With the rapid development of science and technology, sustained economic growth, social progress, a variety of engineering structures of today's society undergoing significant changes, material, structure, technology and other complex, and we will continue to large, complex , automation, and so the long-term direction. In China, large-scale dams, bridges, highways, high-speed railway, etc. large-scale projects are constantly under construction, for the effective monitoring and early warning of such large and complex engineering structure is very important and urgent. Optical fiber sensing technology has its unique advantages in the sensing field, anti-electromagnetic interference, corrosion resistance, insulation resistance, high sensitivity, passive and may constitute a large sensor network, after 30 years of research, optical fiber sensing technology continues to mature development and will play an important role in the field of geology health and safety monitoring.