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3. A Regional-Scale Analysis Based on a Combined Method for Rainfall-Induced Landslides and Debris Flows

  • 2023
  • OriginalPaper
  • Chapter
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Abstract

The chapter focuses on the regional-scale analysis of rainfall-induced landslides and debris flows, employing a combined method that addresses the limitations of traditional numerical models. It introduces a simplified depth-averaged debris flow model using Herschel-Buckley rheology to track density evolution, which considers both internal and basal frictions as well as basal topology effects. The model is validated through a detailed case study of a historical debris flow event in the mountains above Yu Tung Road, Lantau, Hong Kong. The study area's topography, initial soil depth, and other relevant parameters are meticulously described, and the results are compared with previous studies and field observations. The chapter highlights the model's ability to predict debris flow mobility and volume changes accurately, making it a valuable resource for geotechnical and civil engineers dealing with landslide and debris flow hazards.

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Title
A Regional-Scale Analysis Based on a Combined Method for Rainfall-Induced Landslides and Debris Flows
Authors
Sangseom Jeong
Moonhyun Hong
Copyright Year
2023
Publisher
Springer Nature Singapore
DOI
https://doi.org/10.1007/978-981-19-4074-3_3
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