| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2016: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2015: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Outline of Final Research Achievements |
This study has been conducted to establish how to monitor the status of the slope using the elastic waves transmitting under the slope surface where landslide is concerned to occur.
For in situ monitoring, we radiated weak elastic waves over a wide frequency range so that status of slope was not affected. We successfully recorded transmitted waves by high sensitivity accelerometer array observation.
In laboratory, elastic wave measurement transmitting through unconsolidated soil was performed as an element test. An increase in phase velocity with decrease in water head was observed during the drying process of the medium, and this change preceded from lower frequencies.
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