Monitoring system of slopes with optical fiber sensors

Takeshi Miyagawa; Kimio Konishi; Tokio Hiraki

doi:10.1117/12.481944

9 September 2002 Monitoring system of slopes with optical fiber sensors

Takeshi Miyagawa, Kimio Konishi, Tokio Hiraki

Proceedings Volume 4920, Advanced Sensor Systems and Applications; (2002) https://doi.org/10.1117/12.481944
Event: Photonics Asia, 2002, Shanghai, China

Abstract

In Japan, number of human lives and assets are being lost due to collapse of slopes at number of occasions during rainy season each year. Pleasantly, a main form of forecasts for such collapse of slopes consists of forecasts by precipitation. However, collapse of slopes can take many different shapes depending on the land formation, geological characteristics, vegetation, etc. and in some cases, a collapse happens with no relation to precipitation at all. Under such circumstances, there is an expectation for development of more reliable technology of slope collapse forecast. Based on this background, we developed our original technology, namely, optical fiber displacement sensors and slope monitoring system. We have been undertaking functional testing of this system since April 2001. We are currently collecting valuable data for building a system which shall enable us to give successful forecasts of collapse of slope. So far, successful forecasts using the system include detection of collapse of slope occurred in June, 2001.

Citation Download Citation

Takeshi Miyagawa, Kimio Konishi, and Tokio Hiraki "Monitoring system of slopes with optical fiber sensors", Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); https://doi.org/10.1117/12.481944

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