Modelling the impact of sand extraction from large rivers

Andrea Gasparotto*, Andrew P. Nicholas, Gregory Sambrook Smith, Afrah Daham, Julian Clark, Tahmina Yasmin

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Sand is one of the most intensely exploited natural resources and is utilized in several sectors. Fluvial environments are key sources for the excavation of such material. There is currently a lack of effective regulation of sand extraction, reliable data able to quantify rates of extraction, and quantitative understanding of the impacts of extraction on river morphology. The aim of this research is to address this knowledge gap by seeking to better understand the impact
of sand mining on rivers using numerical simulations. A 52-year river evolution scenario was considered, including 10 years of sand mining where sand is extracted from bars and floodplain areas at low flow (dry mining) and from the channels (wet mining). Dry mining was found to promote more dynamic responses with higher braiding and avulsion. In contrast, wet mining favors bed incision leading to less dynamic behaviors and reduced braid intensity, especially in post-mining periods.
Original languageEnglish
Title of host publicationRiver Flow 2022
EditorsAna Maria Ferreira da Silva, Colin Rennie, Susan Gaskin, Jay Lacey, Bruce MacVicar
PublisherRoutledge
ISBN (Print)9781032346137
Publication statusAccepted/In press - 31 Mar 2022
EventRiver Flow 2022: the 11th International Conference on Fluvial Hydraulics - Kingston and Ottowa, Canada
Duration: 8 Nov 202210 Nov 2022
Conference number: 11
https://www.rf2022.com/

Conference

ConferenceRiver Flow 2022
Country/TerritoryCanada
CityKingston and Ottowa
Period8/11/2210/11/22
Internet address

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