In this study, characteristics of waterdrop-induced soil detachment are studied based on the development of a new measuring device for soil detachment and dynamic properties of the waterdrop. Miniature strain gauges were connected to a small cantilever and a dynamic data logger for continuous measurement of the properties. An equation was derived and proposed to estimate the rainfall terminal velocity, kinetic energy, size, mass and impact force as a function of the output of the sensors. In addition, 1D and 2D rainfall experiments were conducted to study the characteristics of soil detachment (i.e. sizes of the eroded sediments). The experiments took into account the effect of initial soil conditions on soil erosion (i.e. soil moisture and soil suction). It was found that in the 1D rainfall experiment, the initially saturated condition produced the lowest soil loss compared to initially unsaturated condition with soil suction up to 400 kPa. The median sizes of the suspected sediments and the eroded soil from the experiments were found to be within the range of 0.01-0.05 mm.
|出版ステータス||出版済み - 2017|
|イベント||19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017 - Seoul, 大韓民国|
継続期間: 9 17 2017 → 9 22 2017
|その他||19th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2017|
|Period||9/17/17 → 9/22/17|
All Science Journal Classification (ASJC) codes