| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
Geo-disasters such as landslides, slope failures and debris flows are becoming more frequent. In this study, we proposed two in-situ investigation techniques which could contribute to a rational evaluation of a slope/embankment stability. One is a small-diameter tool which provides in-situ soil strength parameters (cohesion and internal friction angle of soils). It is used in hand-dug boreholes and a Mohr-Coulomb failure line can be rapidly determined with respect to the borehole wall. The other is a method of the microtremor observation which estimates shape of a potential slip surface of a slope. Laboratory and field experiments were performed to assess the validity and usability of the techniques. The test results indicate that the proposed methods are promising tools for simple and rapid in-situ measurements of slope investigations.
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