Hydrodynamic Characteristics of the Formation Processes for Non-Homogeneous Debris-Flow

Abstract

Non-homogeneous debris flows are characterized by a wide grain size gradation, high volumetric weight and sediments not uniformly distributed along the vertical direction of the flow depth. These flows usually occur in the southwestern mountainous area of China during the rainy season, causing tangible and non-tangible damages; therefore, it is crucial to study their dynamic characteristics. An experimental campaign was conducted to replicate three processes typical of debris flows: (i) formation; (ii) propagation; and (iii) accumulation. Different flow rates, soil composition and flume slopes were applied. Multiple experimental parameters were quantified for each test conducted such as pore water pressure and velocity and a series of regression analyses were used to determine the relative impact of each experimental variable on these recorded parameters. The results showed that the flowrate and the vertical grading coefficient associated with the soil composition have the maximum and the minimum influence on the formation of debris flows and propagation velocities measured, respectively. This result is significant and needs to be considered when planning or designing control measures to reduce the impacts of debris flows.

Publication DOI: https://doi.org/10.3390/w10040452
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Civil Engineering
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering
Additional Information: Copyright © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Uncontrolled Keywords: non-homogeneous,debris-flow,formation,movement,hydrodynamic,SDG 9 - Industry, Innovation, and Infrastructure,SDG 11 - Sustainable Cities and Communities,SDG 13 - Climate Action
Publication ISSN: 2073-4441
Last Modified: 12 Mar 2025 08:10
Date Deposited: 14 Jan 2025 15:42
Full Text Link:
Related URLs: https://www.mdp ... 3-4441/10/4/452 (Publisher URL)
PURE Output Type: Article
Published Date: 2018-04
Published Online Date: 2018-04-09
Accepted Date: 2018-04-03
Authors: Shu, Anping
Tian, Lu
Wang, Shu
Rubinato, Matteo (ORCID Profile 0000-0002-8446-4448)
Zhu, Fuyang
Wang, Mengyao
Sun, Jiangtao

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