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TitreCauses and environmental impact of the gold-tailings dam failure at Karamken, the Russian Far East
AuteurGlotov, V E; Chlachula, J; Glotova, L P; Little, E
SourceEngineering Geology (Amsterdam) vol. 245, 2018 p. 236-247,
Séries alt.Ressources naturelles Canada, Contribution externe 20180204
ÉditeurElsevier BV
Documentpublication en série
Mediapapier; en ligne; numérique
Lat/Long OENS 150.0000 152.0000 60.5000 59.0000
Sujetseffets sur l'environnement; gisements minéraux; or; exploitation minière; traitement des minerais; résidus miniers; résidus; barrages; météorologie; argiles; plagioclase; pergélisol; pollution de l'eau souterraine; eaux de surface; rivières; écosystèmes; qualité de l'eau; pollution; substances polluantes; viscosité; géochimie de l'eau; analyses des éléments en trace; historique de l'exploitation minière; activités minières; production; accident environnemental; évaluation environnementale; ressources halieutiques; risque pour l'environnement; alluvions de plaines inondables; dégel du pergélisol; plante; géologie de l'environnement; géologie de l'ingénieur; géologie économique; hydrogéologie; géologie des dépôts meubles/géomorphologie; géochimie; minéralogie; Nature et environnement; Phanérozoïque; Cénozoïque; Quaternaire; Mésozoïque; Crétacé
Illustrationslocation maps; photographs; sketch maps; tables; bar graphs; profiles; time series
Diffusé2018 09 01
Résumé(disponible en anglais seulement)
Karamken was one of the most-productive gold-processing plants of the former Soviet Union located in the Magadan Region of the Russian North Far East. This paper discusses the causes, environmental damage and current geo-ecological conditions at the site facility after the accidental breakage of the storage pond in 2009 following industrial activity termination of this state enterprise (1994). The amassed water-saturated tailings from the mineral processing amounted ~280,000 m3, corresponding to a total mass weight of 340,000 tons. The on-site multi-proxy investigations indicate synergic effects of hydrogeology, meteorology, engineering and human factors to have accounted for this major technical and environmental disaster. Piled sedimentary waste masses mobilized by removal of the dam-protective construction components initiated a water leakage into the main dam body and its eventual failure. Activated thixotropic processes of plagioclase clay-enriched sediments in conjunction with heavy machinery works on top of the 27 m-high frontal levee above destabilized permafrost grounds together with lack of the facility maintenance are the main causes for this industrial accident. The outburst of the accumulated deposits spilled large quantities of toxic elements stored in the pulverized saturated tailings, poisoning ground waters and causing severe damage to the local riverine ecosystem and fishery, as well as destruction of the nearby town with human casualties. The identified spillage risk factors could be used to forecast the stability of other similar facilities in the sub-Arctic areas.