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http://dx.doi.org/10.9720/kseg.2022.1.073

Analysis of Factors Influencing Landslide Occurrence along a Forest Road Near Sangsan Village, Chungju, Korea  

Kim, Hyeong-Sin (Department of Disaster Prevention Engineering, Chungbuk National University)
Moon, Seong-Woo (Department of Earth and Environmental Sciences, Chungbuk National University)
Seo, Yong-Seok (Department of Earth and Environmental Sciences, Chungbuk National University)
Publication Information
The Journal of Engineering Geology / v.32, no.1, 2022 , pp. 73-83 More about this Journal
Abstract
The factors influencing landslide occurrence were analyzed for six points on the upper slope and the 24 points on the lower slope along a forest road around Sangsan village in Chungju, Korea, where landslides have occurred due to heavy rainfall. In terms of physico-mechanical properties of the soil layer, the lower slope seemed to loosen owing to the higher porosity, lower unit weight, and lower friction angle compared with the upper slope. With respect to topographic characteristics, the lower slope had thicker regolith, more concave profile and plan curvatures, lower slope angles, and higher topographic wetness index values than the upper slope. Therefore, all the properties (except for the slope angle) appear to make the lower slope of the forest road more vulnerable to landslides than the upper slope. Apart from the physico-mechanical and topographic characteristics, inadequate maintenance and management of drainage facilities are also considered as further major factors influencing landslide occurrence.
Keywords
landslide; forest road; physico-mechanical property; topographic characteristic; drainage facility;
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Times Cited By KSCI : 1  (Citation Analysis)
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