GIS-based prediction method of landslide susceptibility using a rainfall infiltration-groundwater flow model

This paper describes a physical-based model to predict rainfall-induced landsides. Special attention was given to the introduction of a GIS-based model, YS-Slope model (YonSei-Slope model), which can evaluate the susceptibility of landslides. The model has been improved by incorporating the combined effects of groundwater flow and rainfall infiltration into the raster model. The two dimensional Darcy's law was used to reflect the effect of groundwater flow in the soil slope, and the modified Green–Ampt model, which is a one-dimensional infiltration model, was selected to capture the effect of rainfall infiltration into the soil mass. These elements were integrated into the infinite slope-stability model for a rainfall-induced landslide. The proposed model was verified by comparing the results from existing models as well as an actual slope failure case that occurred in Korea. With further study, the YS-model could be adopted as a prediction method for rainfall-induced landslides.

[1]  Dwight A. Sangrey,et al.  Predicting Ground-water Response to Precipitation , 1984 .

[2]  P. Burrough.  Principles of Geographical Information Systems for Land Resources Assessment , 1986 .

[3]  Curtis L. Larson,et al.  Modeling infiltration during a steady rain , 1973 .

[4]  Leonardo Noto,et al.  Physically based modeling of rainfall-triggered landslides: a case study in the Luquillo Forest, Puerto Rico , 2013 .

[5]  Ning Lu,et al.  Infinite slope stability under steady unsaturated seepage conditions , 2008 .

[6]  V. Singh,et al.  Computer Models of Watershed Hydrology , 1995 .

[7]  John F. O'Callaghan,et al.  The extraction of drainage networks from digital elevation data , 1984, Comput. Vis. Graph. Image Process..

[8]  S. K. Jenson,et al.  Extracting topographic structure from digital elevation data for geographic information-system analysis , 1988 .

[9]  Richard M. Iverson,et al.  Landslide triggering by rain infiltration , 2000 .

[10]  D. E. Pufahl,et al.  Model for the prediction of shear strength with respect to soil suction , 1996 .

[11]  Jan W. Hopmans,et al.  Parameter uncertainty analysis of common infiltration models , 1998 .

[12]  W. Z. Savage,et al.  TRIGRS - A Fortran Program for Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Analysis, Version 2.0 , 2002 .

[13]  Donald H. Gray,et al.  Biotechnical and Soil Bioengineering Slope Stabilization: A Practical Guide for Erosion Control , 1996 .

[14]  R. Valentino,et al.  Towards a real-time susceptibility assessment of rainfall-induced shallow landslides on a regional scale , 2011 .

[15]  Giacomo Bertoldi,et al.  Modelling the probability of occurrence of shallow landslides and channelized debris flows using GEOtop‐FS , 2008 .

[16]  D. Montgomery,et al.  A physically based model for the topographic control on shallow landsliding , 1994 .

[17]  Yang Hong,et al.  Evaluation of TRIGRS (transient rainfall infiltration and grid-based regional slope-stability analysis)’s predictive skill for hurricane-triggered landslides: a case study in Macon County, North Carolina , 2011 .

[18]  Alexis Achim,et al.  Slope stability and erosion control : ecotechnological solutions , 2008 .

[19]  Sang-Seom Jeong,et al.  Influence of rainfall-induced wetting on the stability of slopes in weathered soils , 2004 .

[20]  Pi-Fang Hung,et al.  Assessment of Three Infiltration Formulas based on Model Fitting on Richards Equation , 2002 .

[21]  W. Green,et al.  Studies on Soil Phyics. , 1911, The Journal of Agricultural Science.

[22]  David G. Tarboton,et al.  The SINMAP Approach to Terrain Stability Mapping , 1998 .

[23]  Jae-Young Choi,et al.  Stability Analysis of Unsaturated Weathered Soil Slopes Considering Rainfall Duration , 2009 .

[24]  D. Fredlund,et al.  The shear strength of unsaturated soils , 1978 .

[25]  Xu Weiya,et al.  GIS-based landslide hazard assessment: an overview , 2005 .

[26]  M. van Noordwijk,et al.  Root methods: A handbook , 2000 .

[27]  David M. Mark,et al.  Part 4: Mathematical, Algorithmic and Data Structure Issues: Automated Detection Of Drainage Networks From Digital Elevation Models , 1984 .

[28]  D. Tarboton.  A new method for the determination of flow directions and upslope areas in grid digital elevation models , 1997 .

[29]  Richard A. Regueiro,et al.  Instability of partially saturated soil slopes due to alteration of rainfall pattern , 2012 .

[30]  L. Martz,et al.  CATCH: a FORTRAN program for measuring catchment area from digital elevation models , 1988 .

[31]  Effect of clay content on well-graded sands due to infiltration , 2008 .

[32]  Marco Borga,et al.  Analysis of topographic and climatic control on rainfall-triggered shallow landsliding using a quasi-dynamic wetness index , 2002 .

[33]  K. Beven,et al.  A physically based, variable contributing area model of basin hydrology , 1979 .

[34]  Daniel Pradel,et al.  Effect of Permeability on Surficial Stability of Homogeneous Slopes , 1993 .

[35]  Carol S. Tatay.  Level I Stability Analysis (LISA) Documentation for Version 2.0 , 1996 .