초록

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Abstract ▼ AI-Helper

The landslide is occurred in South Korea mostly by local heavy rainfall. And the triggering mechanism and type of landslides may largely depend on the regolith in slope created by weathering phenomena and geomorphic characteristics of the bedrock. Therefore for predicting and preventing future lan...

The landslide is occurred in South Korea mostly by local heavy rainfall. And the triggering mechanism and type of landslides may largely depend on the regolith in slope created by weathering phenomena and geomorphic characteristics of the bedrock. Therefore for predicting and preventing future landslide events in South Korea the understanding of the characteristics of weathering phenomena of the bedrock is considered firstly, and some essential data such as precipitation, geomorphic features, lithology, earthquake, and vegetation must be synthetically considered. This study on the morpho-climatic viewpoint is aimed to review the characteristics of weathering phenomena of the main bedrocks of South Korea, metamorphic rock (gneiss), granite, and sedimentary rock. As a result, the higher percentages of small particles (clay and silt), the higher porosity, and the lower density reveals in the landslide areas than natural slope over all kinds of rocks. Liquid limit is similar, but plastic limit is relatively higher in the gneiss areas than the granite areas and the sedimentary rock areas. Permeability coefficient in regolith of the granite areas is relatively higher than other rocks.

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