Implementation of Climate Change Effects on Slope Stability Analysis

The objective of this study is to determine the impacts of expected climate change on slope stability. For this purpose, the case study of a slope instability, that was triggered in 2021 was selected. The stability analysis was performed considering the theory of rainfall infiltration and using Geo-...

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Bibliographic Details
Published in:Applied sciences 2022-08, Vol.12 (16), p.8171
Main Authors: Bračko, Tamara, Žlender, Bojan, Jelušič, Primož
Format: Article
Language:English
Subjects:
Adaptation
Climate change
climate change adaptation
Cohesion
Emissions
General circulation models
Greenhouse effect
Greenhouse gases
Groundwater
Groundwater flow
International organizations
Laboratories
Landslides
Membrane permeability
Moisture content
Permeability
Planning
Pore water
Precipitation
Rain
Rainfall
Rainfall infiltration
Regions
Safety
Safety factors
seepage analyses
Slope stability
Soil permeability
Stability analysis
Surface runoff
Surface water
Water content
Water flow
water net infiltration
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Summary:The objective of this study is to determine the impacts of expected climate change on slope stability. For this purpose, the case study of a slope instability, that was triggered in 2021 was selected. The stability analysis was performed considering the theory of rainfall infiltration and using Geo-Studio’s SEEP/W module for the surface infiltration model of the slope. A parametric stability analysis of the slope was conducted to determine the importance of climate change on slope stability. Conditions for changes in volumetric water content, water permeability, porewater pressure, and groundwater flow are important. When soil permeability is low, the factor of safety decreases during rainfall events and on the days following, while when permeability is higher, safety increases after rainfall events. The effect of lower cohesion is nearly linear, with the factor of safety decreasing by 0.1 for every 1 kPa less cohesion. The increase in net infiltration of water may be the most critical factor for slope instability. The results of the analysis indicate that timely reduction of water net infiltration through planting and proper surface water runoff from the upper road and slope would be a relatively simple and inexpensive measure compared to the cost of remediating the landslide, considering expected climate change. Therefore, it is advisable to analyze all slopes with respect to the expected climate change, taking into account the potential impacts of climate change.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12168171