Article
Version 1
Preserved in Portico This version is not peer-reviewed
Determination of Hazard due to Debris Flows
*
,
,
,
Version 1
: Received: 30 August 2023 / Approved: 30 August 2023 / Online: 31 August 2023 (08:41:10 CEST)
A peer-reviewed article of this Preprint also exists.
Bocanegra, R.A.; Ramírez, C.A.; Salcedo, E.J.; Villegas, M.P.L. Determination of Hazard Due to Debris Flows. Water 2023, 15, 4057. Bocanegra, R.A.; Ramírez, C.A.; Salcedo, E.J.; Villegas, M.P.L. Determination of Hazard Due to Debris Flows. Water 2023, 15, 4057.
Abstract
Debris flows have generated major disasters worldwide due to their great destructive capacity, which is associated with their high energy levels and short response times. To achieve an adequate risk management of these events, it is necessary to define as accurately as possible the different hazard levels to which the territory is exposed. This article develops a new methodology to estimate this hazard based on the hydrodynamic characteristics of the flow and the granulometry of the sediments that can be mobilized by the flow. The hydrodynamic characteristics of the flow are determined through a mathematical modeling that considers the rheology of non-Newtonian flows and the different volumes of sediments that could be transported during events corresponding to different return periods. The proposed methodology was implemented in the Jamundí River basin (Colombia). The results obtained indicate that in the upper part of this basin there is a low hazard level, while in the lower part of the basin approximately 15% of the affected territory has a medium hazard level and the remaining 85% has a low hazard level. The methodology developed is simple to implement but technically rigorous since it considers all relevant aspects in the generation of debris flows.
Keywords
debris flow; hazard zoning; mathematical modeling; intensity of debris flow; debris size
Subject
Engineering, Civil Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
