Critical study of current situation of Vr?nicioara tailing pond on Cavnicului Valley, risks and consequences

Innovative Ideas in Science 2016

Bud, I.^1 ; Duma, S.^1 ; Gusat, D.^1 ; Pasca, I.^1 ; Bud, A.^1

Technical University of Cluj Napoca, North University Centre of Baia Mare, Faculty of Engineering, Romania^1

关键词: Continuous exposure;    Ecological rehabilitation;    Environmental risks;    Physical stability;    Rehabilitation works;    Scientific meetings;    Technical projects;    Technical standards;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/200/1/012042/pdf
DOI  :  10.1088/1757-899X/200/1/012042

来源: IOP

【 摘 要 】

In northern Romania, there are numerous tailing ponds, resulting from mining activities that present significant environmental risks. Some of them, including Vrnicioara tailing pond, were the subject of technical projects for ecological rehabilitation. Vrnicioara pond is located on the right side of Cavnic Valley, downstream Cavnic town, about 4 kilometers far. It has about 500 m length and is located parallel to the road linking Baia Sprie and Cavnic localities. Chemical and physical stability of the tailing pond before rehabilitation interest the research, analysis and conclusions were published in several scientific meetings. In addition, close to the pond at less than 100 m, an open pit has developed, exploiting andesite by mining blast, increasing the risk of physical stability by continuous exposure to vibration. This activity currently continues, advancing towards the tailing pond body. The critical study addresses the current state of Vrnicioara Tailing Pond, analysis of some rehabilitation works done incorrectly, analysis of chemical stability that was not a priority during rehabilitation. Research intention is heading to water analysis confirming the existence of acid drainage that was not stopped or at least reduced. The scientific approach is based on the Technical Standards for Waste Deposits, in force in Romania, providing the rules to ensure physical and chemical stability.