|Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
|Outline of Final Research Achievements
Soil erosion is a natural phenomenon usually induced by water flows, including overland flow and seepage flow in soils, and is still difficult to be predicted accurately. In order to deal with the natural phenomenon, proper approaches from soil mechanics and hydraulics are required. This research project has attempted an experimental investigation of incipient motion of cohesionless soils under seepage effects and rheology of the soils under very low confining stress assuming the soil surface. In addition to the experimental investigation, a numerical method which can simultaneously simulate (regular) water flow in a fluid domain and seepage flow in a porous medium has been developed. The above achievement has established the basics for the prediction of the soil erosion considering the interaction of water flows inside and outside of soils.