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http://dx.doi.org/10.7843/kgs.2021.37.6.21

Comparison of Rainfall Seepage Characteristics of Gneiss and Granite Weathered Soil  

Song, Young-Suk (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Yoo, Yong-Jae (Dept. of Civil and Environmental Engrg., Dongshin Univ.)
Kim, Tae-Wan (Dept. of Civil and Environmental Engrg., Dongshin Univ.)
Kim, Jae-Hong (Dept. of Civil and Environmental Engrg., Dongshin Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.37, no.6, 2021 , pp. 21-28 More about this Journal
Abstract
The factors of landslides depend on rainfall intensity, duration, and the characteristics of the soil slope. The conventional slope stability analysis has been carried out by assuming that the slope is saturated. But, a site slope consisting of unsaturated ground must be imitated and interpreted in order to explain a proper behavior of the slope due to rainfall. In this study, by using two major categories of soils in Korea, such as granite and gneiss weathered soils, landslide model test and numerical analysis have been compared with the difference of seepage and volumetric water content. In general, the permeability of gneiss weathered soil, which contains a lot of fines content, is slower than that of granite weathered soil. As a result, in extreme rainfall, numerical analysis can show results that can penetrate quickly, resulting in saturation or more dangerous collapse.
Keywords
Gneiss weathered soil; Granite weathered soil; Rainfall seepage; Slope stability; Unsaturated soil;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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