Abstract
Climate change has a significant impact on rainfall characteristics. The global landslide dataset has reflected that most of the landslides in northeast India are triggered primarily by rainfall and secondarily by earthquakes. Among which significant rainfall-induced landslides were attributed to antecedent rainfalls. Antecedent rainfall is the rainfall that happens before failure. There is much evidence that there is no rainfall during the landslides, clearly indicating the significance of antecedent rainfall. Though it is identified that antecedent rainfall is the triggering cause of rainfall-induced landslides, the patterns or the distribution of the antecedent rainfall has not received much attention. This study attempts to understand the influence of antecedent uniform rainfall patterns on slope stability of both high-conductivity and low-conductivity soil slopes. A finite element software Geostudio is used to analyze the effect of selected uniform rainfall patterns on seepage. The effect of a 5-day antecedent uniform rainfall pattern on pore water pressure and factor of safety are observed with respect to time and depth. The results obtained clearly showed the significance of antecedent uniform rainfall pattern on stability of slope, particularly low-conductivity soil slope. This study helps in improving the early warning system for risk mitigation.KeywordsAntecedent rainfallUniform rainfall patternPore water pressureSlope stabilityFactor of safety
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
