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http://dx.doi.org/10.9720/kseg.2020.4.485

Characterization of Increases in Volumetric Water Content in Soil Slopes to Predict the Risk of Shallow Failure  

Suk, Jae-Wook (Disaster Prevention Research Division, National Disaster Management Research Institute)
Kang, Hyo-Sub (Disaster Prevention Research Division, National Disaster Management Research Institute)
Choi, Sun-Gyu (Disaster Prevention Research Division, National Disaster Management Research Institute)
Jeong, Hyang-Seon (Disaster Prevention Research Division, National Disaster Management Research Institute)
Song, Hyo-Sung (Disaster Prevention Research Division, National Disaster Management Research Institute)
Publication Information
The Journal of Engineering Geology / v.30, no.4, 2020 , pp. 485-496 More about this Journal
Abstract
The characteristics of volumetric water content changes in soil slopes were studied here in an effort to identify the signs of heavy rain causing shallow slope failure. Volumetric water contents in cases with and without shallow failure were measured in flume and test-bed experiments. Measurement data from 282 experiments of both types revealed that the volumetric water content gradient in shallow failure events ranged from 0.072 to 0.309. In non-failure cases, the range was 0.01~0.32. Therefore, this one specific value cannot predict shallow slope failure. However, as the volumetric water content gradient increased, there was a clear tendency to shallow failure. By using this trend, criteria for four warning levels are suggested.
Keywords
soil slope; shallow failure; volumetric water content; warning criteria; flume test;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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