OTDR을 이용한 낙석 및 붕괴검지 시스템

Monitoring systems for railway structure have been widely constructed along the railway lines. Rockfall and slope failure occur sometimes in Korean railway lines. Rockfall countermeasure such as fence and net is the best choice to prevent a accident but, it is hard to apply widely because it is very expensive. So we try to suggest a new monitoring method using OTDR(Optical Time Domain Reflectometry). This system is constructed in lower cost than other monitoring systems. And it is possible to detect the displacement as well as rockfall and slope failure. A case that proposed method was applied to an operating railway slope is introduced.