›› 2009, Vol. 30 ›› Issue (6): 1856-1860.
• Testing Technology • Previous Articles Next Articles
GE Jie
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Abstract:
The importance of long-term on-line monitoring sea dyke subsidence is described. An experimental system, which monitors Shanghai Lingang sea dyke section k3+640 and k3+780 using distributed Brillouin optical fiber sensing technology (BOTDR), is introduced. The monitoring data from optical fiber sensor system and traditional leveling observation are compared; and the position of the largest strain coincides with the position of the load. The subsidence distribution is calculated; and it coincides with on-site load status and the result of leveling observation. The maximum deviation of five in-situ observation points is 94 mm; the average diviation is 39.2 mm.
Key words: BOTDR, distributed monitoring, sea dyke, subsidence monitoring
CLC Number:
GE Jie. Application of BOTDR to monitoring sea dyke subsidence[J]., 2009, 30(6): 1856-1860.
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