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The role of infiltration processes in steep slope stability of pyroclastic granular soils: laboratory and numerical investigation

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  • Emilia Damiano
  • Lucio Olivares

Abstract

Rainfall-induced landslides on steep slopes are a common feature in much of Italy’s mountain areas covered by shallow-pyroclastic deposits. Generally, these deposits are unsaturated and have a slope angle higher than 40°–50°; hence their stability is due to the positive effect of matric suction on soil shear strength. During rainfall, rainwater infiltration causes a decrease in suction, which in turn causes changes in soil mechanical and hydraulic properties, leading towards an instability process. However, the response of pyroclastic soil slopes to rainwater infiltration is not fully understood. The aim of this study is to link slope instability to the infiltration process on the basis of advanced geotechnical characterization, in situ monitoring and numerical analysis calibrated through a back-analysis of well-instrumented flume tests. Copyright Springer Science+Business Media B.V. 2010

Suggested Citation

  • Emilia Damiano & Lucio Olivares, 2010. "The role of infiltration processes in steep slope stability of pyroclastic granular soils: laboratory and numerical investigation," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 52(2), pages 329-350, February.
    • Handle: RePEc:spr:nathaz:v:52:y:2010:i:2:p:329-350
    DOI: 10.1007/s11069-009-9374-3
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    Cited by:

    1. Edoardo Rundeddu & José J. Lizárraga & Giuseppe Buscarnera, 2022. "Hybrid stochastic-mechanical modeling of precipitation thresholds of shallow landslide initiation," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 113(2), pages 1083-1104, September.
    2. Sebastiano Perriello Zampelli & Eliana Bellucci Sessa & Marco Cavallaro, 2012. "Application of a GIS-aided method for the assessment of volcaniclastic soil sliding susceptibility to sample areas of Campania (Southern Italy)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 61(1), pages 155-168, March.

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