| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
We have previously investigated a measurement method of soil moisture and groundwater level using ultrasonic wave for predicting slope failure. To apply this method to a practical field monitoring,we fabricated a multichannel monitoring system and tried to use this system in field tests,and pointed out the problems. Thunderbolt protection and detecting method for inhomogeneous soil particles were developed to use this system in a practical field monitoring. For inhomogeneous coarse-grained soils, covering the detecting surface with a homogeneous fine soil such as Toyoura sand was effective to obtain repeatable data for wetting and drying cycles.
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