• Laser & Optoelectronics Progress
  • Vol. 60, Issue 23, 2312006 (2023)
Jun Li*, Dingbo Zhang, Xinwei Zhang, Jiarui Zhang..., Ruixu Yao and Binbin Fan|Show fewer author(s)
Author Affiliations
  • College of Safety Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, Shaanxi, China
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    DOI: 10.3788/LOP223211 Cite this Article Set citation alerts
    Jun Li, Dingbo Zhang, Xinwei Zhang, Jiarui Zhang, Ruixu Yao, Binbin Fan. Safety Monitoring of Railway Tunnel Structure During Operation Period Based on Fiber Grating Sensing and Video Displacement Meter Technology[J]. Laser & Optoelectronics Progress, 2023, 60(23): 2312006 Copy Citation Text show less
    Schematic diagram of tunnel safety monitoring system
    Fig. 1. Schematic diagram of tunnel safety monitoring system
    Schematic diagram of FBG structure
    Fig. 2. Schematic diagram of FBG structure
    Schematic diagram of the optical video replacement technology
    Fig. 3. Schematic diagram of the optical video replacement technology
    Schematic diagram of template matching technology
    Fig. 4. Schematic diagram of template matching technology
    Tunnel site working condition
    Fig. 5. Tunnel site working condition
    Comprehensive drawing of sensor installation information
    Fig. 6. Comprehensive drawing of sensor installation information
    Topological diagram of tunnel structure safety monitoring system
    Fig. 7. Topological diagram of tunnel structure safety monitoring system
    Double-layer lined tunnel model
    Fig. 8. Double-layer lined tunnel model
    Tunnel model static load
    Fig. 9. Tunnel model static load
    Tunnel strain map at train passing time
    Fig. 10. Tunnel strain map at train passing time
    Long-term trend chart of tunnel strain stability
    Fig. 11. Long-term trend chart of tunnel strain stability
    Tunnel settlement map at train passing time
    Fig. 12. Tunnel settlement map at train passing time
    Long-term trend chart of tunnel settlement stability
    Fig. 13. Long-term trend chart of tunnel settlement stability
    Information of mearsuring pointsMearsuring point AMearsuring point B
    Horizontal displacement /mmVertical displacement /mmHorizontal displacement /mmVertical displacement /mm
    Before the traffic-0.100.00-0.400.10
    The first train a0.00-0.501.502.20
    The second train b-8.10-12.90-0.60-0.60
    The third train c-4.30-17.90-2.80-0.50
    After the traffic-0.100.00-0.500.20
    Table 1. Data fluction before and after the train passes
    Information of mearsuring pointsMearsuring point AMearsuring point B
    Horizontal displacement /mmVertical displacement /mmHorizontal displacement /mmVertical displacement /mm
    Initial displacement-0.100.00-0.200.10
    Displacement of 30 d-0.20-0.10-0.400.30
    Displacement of 60 d-0.20-0.20-0.100.00
    Displacement of 90 d-0.40-0.300.20-0.30
    Displacement of 120 d-0.70-1.400.30-2.90
    Table 2. Long-term data of tunnel measuring points
    Jun Li, Dingbo Zhang, Xinwei Zhang, Jiarui Zhang, Ruixu Yao, Binbin Fan. Safety Monitoring of Railway Tunnel Structure During Operation Period Based on Fiber Grating Sensing and Video Displacement Meter Technology[J]. Laser & Optoelectronics Progress, 2023, 60(23): 2312006
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