7Philipp M. Nellen, Andreas Frank, Roif Bronnimann, et al, Optical fiber bragg gratings for tunnel surveillance [ J ]. Proceedings of SPIE, 2000 (3986): 263-270.
8Ansari F. Real-time condition monitoring of concrete structures by embedded optical fibers [ A ]. Nondestructive Testing of Concrete Elements and Structure [ C1. Proceedings of the ASCE, San Antonio, TX, 1992:49 -59.
9Whitten L Schulz, Joel P Conte, Eric Udd. Long gage fiber bragg grating strain sensors to monitor civil structures [ J ]. Proc. SPIE, 2001, 4330: 56- 65.
10Yang Y W, Bhalla S, Wang C, et al. Monitoring of rocks using smart sensors [ J ]. Tunnelling and Underground Space Technology, 2007 (22) : 206 -221.