Regional Hazard Degree Evaluation and Prediction for Disaster Induced by Discharged Tailings Flow from Dam Failure
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ORIGINAL PAPER
Regional Hazard Degree Evaluation and Prediction for Disaster Induced by Discharged Tailings Flow from Dam Failure Guangjin Wang . Sen Tian
. Bin Hu . Jie Chen . Xiangyun Kong
Received: 6 August 2020 / Accepted: 14 October 2020 Ó Springer Nature Switzerland AG 2020
Abstract Tailings impoundments are the important structures for the normal mine production, which are also the potential major hazard sources of mine safety. On the basis of the previous tailings dam break model experiment and numerical simulation results, the important characteristic parameters were selected to develop a hazard degree evaluation index system for the disasters induced by the discharged tailings flow from dam failure. The evaluation model was established further by using the uncertainty measurement theory. The results show that the hazard degrees of three characteristic regions (village locations) in the downstream of tailings impoundment were evaluated; it was determined that, the regional safety level of village I was ‘‘dangerous’’, while those for villages II and III were ‘‘relatively safe’’. Moreover, the G. Wang Key Laboratory of Mine Geological Hazards Mechanism and Control, Xi’an 710054, China G. Wang S. Tian (&) J. Chen State Key Laboratory of Coal Mine Disaster Dynamics and Control, School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China e-mail: [email protected]
evolution process of discharged tailings flow was divided into three characteristic stages on the whole, and a greater sand burst amount was associated with a greater risk to the downstream of the tailings impoundment. The results were highly consistent with the results of the laboratory dam break model experiments and numerical simulations. Keywords Hazard evaluation Geotechnical slope Tailings dam Mudflow disaster Dam failure
G. Wang Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space, Kunming 650093, China B. Hu (&) School of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China e-mail: [email protected]
G. Wang X. Kong National and Local Joint Engineering Research Center for Green Comprehensive Utilization of Metal Ore Tailings Resources, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China
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Geotech Geol Eng
1 Introduction The disaster prevention and control and environmental requirements during the exploitation of mineral resources are increasingly rigorous. The safe stockpiling and environmental disposal of mine solid wastes represent the major demands to guarantee mine safety and sustainable development of mining area environment (Santamarina et al. 2019). Tailings impoundments are the essential facilities in mining, which are extremely likely to induce secondary disasters such as mudslide, landslide, and water and soil pollution. In the case of dam failure, thus the tailings mud in the impoundment
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