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Back Analysis of a Real Debris Flow, the Morino-Rendinara Test Case (Italy), Using RAMMS Software

Author

Listed:
  • Antonio Pasculli

    (Department of Engineering and Geology, University “G. d’Annunzio” of Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy
    INDAM Research Group GNCS, National Group of Scientific Computing, National Institute of Advanced Mathematics, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy)

  • Claudia Zito

    (Department of Engineering and Geology, University “G. d’Annunzio” of Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy)

  • Nicola Sciarra

    (Department of Science, University “G. d’Annunzio” of Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy)

  • Massimo Mangifesta

    (Department of Science, University “G. d’Annunzio” of Chieti-Pescara, Via dei Vestini, 31, 66100 Chieti, Italy)

Abstract

Debris flows are a dynamic and hazardous geological phenomenon, as by definition, debris flows are rapid, gravity-driven flows of saturated materials that often contain a mixture of water, rock, soil, and organic matter. They are highly destructive and occur in steep channels, posing a significant threat to infrastructure and human life. The dynamics of debris flows are complex due to their non-Newtonian behaviour and varying sediment–water interactions, making accurate modelling essential for risk mitigation and emergency planning. This paper reports and discusses the results of numerical simulations of back analyses aimed at studying the reconstruction of a real rapid debris flow. The selected test case is the event that occurred on 12 and 16 March 2021 along the Rio Sonno channel, a tributary of the Liri River, following the landslide event of Rendinara (Municipality of Morino, Abruzzo Region, Italy). There are significant flow sources in the area, fed by a highly fractured carbonaceous aquifer that extends immediately upslope of the detachment zone. The continuous flow influences the saturation level in the fine-grained sediments and favours the triggering of the debris flow. This phenomenon was simulated using the commercial RAMMS code, and the rheological model selected was “Voellmy fluid friction”. The modelling approaches used in this research are valid tools to estimate the volumes of materials involved in the flow-feeding process and for the purpose of possible mitigation works (debris flow-type dams, weirs, flow diversion, etc.).

Suggested Citation

  • Antonio Pasculli & Claudia Zito & Nicola Sciarra & Massimo Mangifesta, 2024. "Back Analysis of a Real Debris Flow, the Morino-Rendinara Test Case (Italy), Using RAMMS Software," Land, MDPI, vol. 13(12), pages 1-27, December.
    • Handle: RePEc:gam:jlands:v:13:y:2024:i:12:p:2078-:d:1535629
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    References listed on IDEAS

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    1. Padam Jee Omar & Shishir Gaur & S. B. Dwivedi & P. K. S. Dikshit, 2020. "A Modular Three-Dimensional Scenario-Based Numerical Modelling of Groundwater Flow," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(6), pages 1913-1932, April.
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