Slope monitoring and stability analysis of open pit mine based on fiber Bragg grating sensing technology

摘要

With the further development of resources, it is urgent to carry out on-line safety monitoring and early warning for high and steep slopes. Fiber Bragg grating technology used in the slide force monitoring can achieve the slope stability evaluation and the landslide pre-warning. The design and development of the fiber Bragg grating cable force sensor was carried out and achieved the automatic temperature compensation of fiber Bragg grating cable force measurement sensor in this paper, the center wavelength and the stress, temperature has a good linear relationship, the practice showed that the fiber Bragg grating anchor cable force sensor could meet the needs of open pit mine slope stability monitoring.