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http://dx.doi.org/10.9720/kseg.2018.3.489

A Study for Characterization on Shallow Behavior of Soil Slope by Flume Experiments  

Suk, Jae-wook (Disaster Prevention Research Division, National Disaster Management Research Institute)
Park, Sung-Yong (Disaster Prevention Research Division, National Disaster Management Research Institute)
Na, Geon-ha (Disaster Prevention Research Division, National Disaster Management Research Institute)
Kang, Hyo-Sub (Disaster Prevention Research Division, National Disaster Management Research Institute)
Publication Information
The Journal of Engineering Geology / v.28, no.3, 2018 , pp. 489-499 More about this Journal
Abstract
A flume experiments was used to study the characteristics of the surface displacements and volumetric water contents (VWC) during torrential rain. The surface displacement and VWC of the granite weathered soil were measured for rainfall intensity (100, 200 mm/hr) and initial ground condition (VWC 7, 14, 26%). The test processes were also recorded by video cameras. According to the test results, The shallow failure is classified into three types: retrogressive failure, progressive failure and defined failure. In the case of retrogressive failure and progressive failure, relatively large damage could occur due to the feature that soil is deposited to the bottom of the slope. the shallow failure occurred when the VWC reached a certain value regardless of the initial soil condition. It was found that the shallow failure can be predicted through the increase patton of the VWC under the condition of the ground dry condition (VWC 7%) and the natural condition (VWC 14%). For high rainfall intensity, progressive failure predominated, and rainfall intensity above a certain level did not affect wetting front transition.
Keywords
steep slope; flume test; shallow failure; surface displacement; water volumetric content;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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