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Analyzed Change of Soil Characteristics by Rainfall and Vegetation  

Lee, Moon-Se (Dept. of Civil Engineering, Chungnam National University)
Kim, Kyeong-Su (Geologic Environment Research Div., Korea Institute of Geoscience and Mineral Resources)
Song, Young-Suk (Geologic Environment Research Div., Korea Institute of Geoscience and Mineral Resources)
Ryu, Je-Cheon (Dept. of Civil & Transportation Engineering, Chung Cheong University)
Publication Information
The Journal of Engineering Geology / v.19, no.1, 2009 , pp. 33-41 More about this Journal
Abstract
In this study, some changes of soil characteristics in a field were analyzed to investigate the effect of heavy rainfall during rainy season. The heavy rainfalls were often induced geohazards like landslides. To do this, the reaching rainfall in the ground surface was investigated according to a condition of vegetation, and the change of soil characteristics induced by infiltrating rainfall was analyzed. The study site is a natural terrain located in Daedeok Science Complex. This site has same geology and soil condition whereas it has different vegetable condition. The rainfall records during the rainy season of 2006 and 2007 were selected. The rainfall records are based on the measuring date from Daejeon Regional Meteorological Administration adjacent to the study site. Also, the rainfall records according to the condition of vegetation were measured using rainfall measuring device made by ourselves. The soil tests were carried out about soil specimen sampled before and after rainfall, and then the change of soil characteristics related to rainfall and vegetation were analyzed. As the result, the density of vegetation was influenced by reaching rainfall quantity in the ground surface, and its influence intensity was decreased with rainfall intensity and rainfall duration. Also, it shows that degree of saturations, water contents, liquidities and shear resistances are directly influenced by heavy rainfalls.
Keywords
heavy rainfall; condition of vegetation; infiltration; soil characteristics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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