File Download

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Slope Stability Analysis of Unsaturated Soil Slopes Based on the Site-Specific Characteristics: A Case Study of Hwangryeong Mountain, Busan, Korea

Author(s)
Kang, SinhangLee, Seung-RaeCho, Sung-Eun
Issued Date
2020-04
DOI
10.3390/su12072839
URI
https://scholarworks.unist.ac.kr/handle/201301/33029
Fulltext
https://www.mdpi.com/2071-1050/12/7/2839
Citation
SUSTAINABILITY, v.12, no.7, pp.2839
Abstract
Shallow slope failures occur almost every year during the rainy season. Continuous observation of the meteorological parameters and hydrological characteristics is required to more clearly understand the triggering mechanisms of shallow slope failure. In addition, influential factors, such as type of relative permeability models, air flow, and variation of hydraulic conductivity associated with stress-strain behavior of soil, have significant effects on the actual mechanism of rainfall infiltration. Real-time data including hourly rainfall and pore water pressure in response to rainfall was recorded by devices; then, the change in pore pressure from the devices was compared to the results from the infiltration analysis with applications of three relative permeability models, air flow, and the coupled hydro-mechanical analysis to examine an appropriate site-specific approach to a rainfall infiltration analysis. The infiltration and stability analyses based on the site-specific hydrologic characteristics were utilized to create maps of safety factors that depend on the cumulative rainfall. In regions vulnerable to landslides, rainfall forecast information and safety factor maps built by applying various rainfall scenarios can be useful in preparing countermeasures against disasters during the rainy season.
Publisher
MDPI
ISSN
2071-1050
Keyword (Author)
slope stabilityunsaturated soil sloperainfall infiltrationlandslide hazard assessment
Keyword
GENUCHTEN-MUALEM MODELHYDRAULIC CONDUCTIVITYSHALLOW LANDSLIDESAIR-FLOWMICROMECHANICSINFILTRATIONDEFORMATIONINSTABILITYFORMULATIONHYSTERESIS

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.