| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Based on the information such as the grain size, it was added to probabilistic discussed equilibrium microscopic forces between the soil grains. In particular, first, by subtracting the penetration from the precipitation it was calculated surface water. Then, it was led to the maximum diameter of the outflow particles from the equilibrium of a particle contact. Then, it was the probability the passing mass percentage in grain size accumulation curve. It was evaluated as a risk value by multiplying the surface layer volume. On the other hand, for Kunigami merge soil, it were subjected to soil erosion experiments using rainfall equipment and surface shear tests using a sprayer. It showed that the inhibitory effect of vegetation and sand mat is large.
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