Abstract
In the projects of IPL 139 (Development of low-cost early warning system of slope instability for civilian use) and IPL 127 (Development of low-cost detector of slope instability for individual use), a low-cost and simple monitoring method for early warning of landslides was proposed. A wireless sensor unit which is equipped with a MEMS (Micro Electro Mechanical Systems) tilt sensor and a volumetric water content sensor was developed and tested on eight real slopes in Japan and China. The sensor unit measures rotation angle on a slope surface by the tilt sensor. In order to examine its relevance, model tests were conducted, and it was confirmed that rotation of the slope surface was observed 30–50 minutes before failure. A similar trend was also observed in a real slope. This could be useful as a signal for early warning. The authors also developed a new sensor device named the ‘Miniature Ground Inclinometer’. It is a long stainless steel pipe with a small diameter, which is equipped with MEMS tilt sensors. By installing it vertically into the slope ground, the array of tilt sensors detects the lateral displacement of the ground. It can be directly inserted into the slope ground together with the sensor units inside by using a small hammer. This allows low cost and quick installation of the device in landslide sites.
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Japanese Geotechnical Society (1995): Method for Portable Dynamic Cone Penetration Test (JGS 1433–1995).
Ochiai, H., Okada, Y., Furuya, G., Okura, Y., Matsui, T., Sammori, T., Terajima, T., and Sassa, K. (2004):A fluidized landslide on a natural slope by artificial rainfall, Landslides, Vol. 1, No. 3, pp. 211–219.
Orense R.P., Towhata I., Farooq, K. (2003): Investigation of failure of sandy slopes caused by heavy rainfall. Proc. Int. Conf. on Fast Slope Movement-Prediction and Prevention for Risk Mitigation (FSM2003), Sorrento.
Orense R.P., Farooq, K., Towhata I. (2004): Deformation behavior of sandy slopes during rainwater infiltration. Soils and Foundations 44(2):15–30.
Towhata,I., Uchimura,T. and Gallage,C.P.K. (2005): On early detection and warning against rainfall-induced landslide, Proc. of The First General Assembly and The Fourth Session of Board of Representatives of the International Consortium on Landslides (ICL), Washington D.C., Springer, pp.133–139.
Uchimura, T., Towhata, I., Wang., L. and Seko, I. (2008): Simple and Low-Cost Wireless Monitoring Units for Slope Failure, Proc. of the First World Landslide Forum, International Consortium on Landslides (ICL), Tokyo, pp. 611–614.
Uchimura, T., Towhata, I., Wang., L. and Seko, I. (2009): Development of Low-cost Early Warning System of Slope Instability for Civilian Use, Proc. of 17th ISSMGE, Alexandria, Vol. 3, pp.1897–1900.
Uchimura, T., Towhata, I., Trinh, T. L. A., Fukuda, J., Bautista, C. J. B., Wang, L., Seko, I., Uchida, T., Matsuoka, A., Ito, Y., Onda, Y., Iwagami, S., Kim, M. S., and Sakai, N. (2010a): “Simple monitoring method for precaution of landslides watching tilting and water contents on slopes surface”, Landslides, (Published online: 17 October 2009)
Uchimura, T., Tanaka, R., Suzuki, D., and Yamada, S. (2010b): Evaluation of hydraulic properties of slope ground based on monitoring data of moisture contents, Proc. of the 4th Japan-Taiwan Joint Worlshop on Geotechnical Hazards from Large Earthquakes and Heavy Rainfalls, Sendai, Japan, pp. 85–90.
Uchimura, T., Wang, L., Qiao, J.-P., and Towhata, I. (2011a): Miniature ground inclinometer for slope monitoring, Proc. of The 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (ATC3 Session).
Uchimura, T., Suzuki, D., and Seo, H.-K. (2011b): Combined monitoring of water content and displacement for slope instability, Proc. of 4th Japan-Korea Geotechnical Workshop, Kobe, pp. 67–72.
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Towhata, I., Uchimura, T. (2013). Low-cost and Simple Early Warning Systems of Slope Instability. In: Sassa, K., Rouhban, B., Briceño, S., McSaveney, M., He, B. (eds) Landslides: Global Risk Preparedness. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22087-6_14
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DOI: https://doi.org/10.1007/978-3-642-22087-6_14
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