Abstract
A cross-correlation analysis is conducted to determine the impacts of the heterogeneity of hydraulic conductivity Ks, soil cohesion c′ and soil friction angle (tan φ′) on the uncertainty of slope stability in time and space during rainfall. We find the relative importance of tan φ′ and c′ depends on the effective stress. While the sensitivity of the stability to the variability of Ks is small, the large coefficient of variation of Ks may exacerbate the variability of pore-water pressure. Therefore, characterizing the heterogeneity of hydraulic properties and pore-water distribution in the field is critical to the stability analysis.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 149-162 |
| Number of pages | 14 |
| Journal | Computers and Geotechnics |
| Volume | 87 |
| DOIs | |
| State | Published - Jul 1 2017 |
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Keywords
- Cross correlation
- Hydraulic conductivity
- Rainfall infiltration
- Shear strength
- Slope stability uncertainty
- Spatial variability
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Computer Science Applications
Cite this
Uncertainty of rainfall-induced landslides considering spatial variability of parameters. / Cai, Jing Sen; Yeh, Tian-Chyi J; Yan, E. Chuan; Hao, Yong Hong; Huang, Shao Yang; Wen, Jet Chau.
In: Computers and Geotechnics, Vol. 87, 01.07.2017, p. 149-162.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Uncertainty of rainfall-induced landslides considering spatial variability of parameters
AU - Cai, Jing Sen
AU - Yeh, Tian-Chyi J
AU - Yan, E. Chuan
AU - Hao, Yong Hong
AU - Huang, Shao Yang
AU - Wen, Jet Chau
PY - 2017/7/1
Y1 - 2017/7/1
N2 - A cross-correlation analysis is conducted to determine the impacts of the heterogeneity of hydraulic conductivity Ks, soil cohesion c′ and soil friction angle (tan φ′) on the uncertainty of slope stability in time and space during rainfall. We find the relative importance of tan φ′ and c′ depends on the effective stress. While the sensitivity of the stability to the variability of Ks is small, the large coefficient of variation of Ks may exacerbate the variability of pore-water pressure. Therefore, characterizing the heterogeneity of hydraulic properties and pore-water distribution in the field is critical to the stability analysis.
AB - A cross-correlation analysis is conducted to determine the impacts of the heterogeneity of hydraulic conductivity Ks, soil cohesion c′ and soil friction angle (tan φ′) on the uncertainty of slope stability in time and space during rainfall. We find the relative importance of tan φ′ and c′ depends on the effective stress. While the sensitivity of the stability to the variability of Ks is small, the large coefficient of variation of Ks may exacerbate the variability of pore-water pressure. Therefore, characterizing the heterogeneity of hydraulic properties and pore-water distribution in the field is critical to the stability analysis.
KW - Cross correlation
KW - Hydraulic conductivity
KW - Rainfall infiltration
KW - Shear strength
KW - Slope stability uncertainty
KW - Spatial variability
UR - http://www.scopus.com/inward/record.url?scp=85014128976&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85014128976&partnerID=8YFLogxK
U2 - 10.1016/j.compgeo.2017.02.009
DO - 10.1016/j.compgeo.2017.02.009
M3 - Article
AN - SCOPUS:85014128976
VL - 87
SP - 149
EP - 162
JO - Computers and Geotechnics
JF - Computers and Geotechnics
SN - 0266-352X
ER -