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http://dx.doi.org/10.7474/TUS.2011.21.1.001

Application and Development Trend of OTDRs  

Chae, Kwagn-Seok (GS건설 기술연구소 첨단건설연구팀)
Lee, Sang-Pil (GS건설 기술연구소 첨단건설연구팀)
Lee, Chang-Ho (GS건설 토목사업본부 경부고속철도 6-4A공구)
Han, Sung-Jae (GS건설 토목사업본부 의정부경전철)
Publication Information
Tunnel and Underground Space / v.21, no.1, 2011 , pp. 1-10 More about this Journal
Abstract
In these days, the development of optical fiber sensor technology is so remarkable that it can measure various physical and chemical quantities ranging from a few millimeters to over several kilometers. In addition, it is attempted to assess the structural integrity of the state of the advanced technologies and existing structures such as ships, aircrafts, and bridges. This paper introduced the case histories of the measuring technology of optical fiber applied on structures such as roads and tunnels. The case history using OTDR (Optical Time Domain Reflectometery) was also introduced in this paper. Measurement of the pre-convergence of a tunnel is essential to assess the safety of a tunnel and understand the geological conditions ahead of an advancing tunnel. Therefore, the pre-convergence measuring technology using OTDR is expected to substitute conventional measuring techniques.
Keywords
Optical fiber sensing; OTDR; Tunnel; Pre-convergence measuring;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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