Development and verification of coupled hydro-mechanical analysis for rainfall-induced shallow landslides

Wen Jong Chang, Shih Hsun Chou, Hsin Po Huang, Ching Yu Chao

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

To improve the performance of rainfall-based shallow landslide warning systems, a coupled hydro-mechanical analysis framework that integrates mechanical slope analysis and hydraulic infiltration is proposed. The limit equilibrium approach for infinite slopes of unsaturated soil is coupled with 1D infiltration analysis to evaluate the transient stability of the soil mass. A hybrid testing process that combines the calculations of stress and hydraulic boundaries near the sliding surface and an element testing system capable of simulating both the stress and hydraulic states on the element boundaries was developed to verify the coupled hydro-mechanical theory. The element-level modeling reveals that the proposed coupled hydro-mechanical analysis is adequate to predict the sliding depth and time of shallow landslides. Furthermore, a time-dependent warning framework based on subsurface moisture content measurements is proposed as an alternative to rainfall-based approaches for early warning of shallow landslides.

原文English
文章編號106337
期刊Engineering Geology
293
DOIs
出版狀態Published - 2021 11月

All Science Journal Classification (ASJC) codes

  • 岩土工程與工程地質
  • 地質學

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