Research Article

Combined Application of Optical Fibers and CRLD Bolts to Monitor Deformation of a Pit-in-Pit Foundation

Figure 17

Settlement curves measured by optical fiber for the inner pit under different conditions: (a) Z21 optical fiber (b) Z22 optical fiber; (c) Z23 optical fiber; (d) Z24 optical fiber; (e) Z25 optical fiber; (f) Z26 optical fiber; (g) Z27 optical fiber; (i) Z28 optical fiber.