ASSESSMENT OF THE ACCIDENT RISK AND CALCULATION OF THE FAILURE PROCESSES IN TERMS OF THE EARTH DIKE OF A TAILING DAM

Array

Authors

  • Н. Hapich Dnipro State Agrarian and Economic University
  • D. Pikarenya Dniprovsk State Technical University
  • L. Rudakov Dnipro State Agrarian and Economic University
  • N. Maximova Dnipro State Agrarian and Economic University
  • Т. Makarova Dnipro State Agrarian and Economic University

Keywords:

earth dike, tailing dam, hydrodynamic accident, integral risk evaluation

Abstract

A problem of the operational reliability and safety of both tailing dams and sludge collectors of the industrial wastes has been considered. Dangers and threats due to the emergency situations have been demonstrated in terms of the world and national experience of the operation of such objects. Certain irrelevance of modern regulatory conditions of the environmental and technogenic safety provision during the operation of those objects has been emphasized. That is caused mainly by the fact that the collectors were designed and constructed in the last century; moreover, the threats are possible due to their long-term operations without proper engineering and technical maintenance. The research has been carried out involving the conventional methods. Preliminary visual and instrumental diagnostic inspections of the object conditions have been performed; mathematical calculations have been carried out; analytical analysis has been applied.  Analysis of technical conditions and accident risks in terms of the earth border dike of a tailing dam has been proposed in the context of the object in Dnipropetrovsk region. It has been identified that under current operating conditions, that hydrotechnical structure has potentially hazardous sites of landslide formations and collapsing of the downstream side due to the filtration deformations. Threat degree λ=0.647 and vulnerability degree νу=0.333 of the object have been specified on the basis of the conventional methodologies. According to the principle of intersections of those events, integral evaluation of accident risk R=0.215 has been defined which corresponds to the decreased safety level of the object operation. Calculation and modeling of the probable development of the earth dike failure have been performed. General indices of the duration of hydrodynamic accident and parameters of the washout formation in the structure body have been identified. Overall time for the tailing dam emptying is about 6 hours. The obtained results can be the basis to provide reliability and safety of the trailing dam operation during the forecasting of accident risks and failure consequences. Compulsory elaboration of the documentation concerning evaluation of the environmental impacts of both tailing dams and slurry collectors has been highlighted. The documentation should include calculations of probable accidents and provide action plan as for the hydrodynamics accident within the tail bay.

Author Biographies

Н. Hapich, Dnipro State Agrarian and Economic University

PhD in Engineering sciences, Associate Professor of the department of Civil Engineering, Building Technologies and Environmental Protection

D. Pikarenya, Dniprovsk State Technical University

Doctor of Geological Sciences, Professor, Professor of the department of Ecology and Environmental Protection

L. Rudakov, Dnipro State Agrarian and Economic University

PhD in Agricultural sciences, Associate Professor, Associate Professor of the department of Water Engineering

N. Maximova, Dnipro State Agrarian and Economic University

PhD in Engineering sciences, Associate Professor of the department Ecology

Т. Makarova, Dnipro State Agrarian and Economic University

PhD in Agricultural sciences, senior lecturer of the department of Civil Engineering, Building Technologies and Environmental Protection

References

1. Benjamin K. Sovacool, Matthew Kryman, & Emily Laine. (2015). Profiling technological failure and disaster in the energy sector: A comparative analysis of historical energy accidents. Energy, 90, 2, 2016-2027. https://doi.org/10.1016/j.energy.2015.07.043.
2. M. Rico, G. Benito, & A. Díez-Herrero. (2008). Floods from tailings dam failures. Journal of Hazardous Materials. 154, 1–3, 79-87. https://doi.org/10.1016/j.jhazmat.2007.09.110.
3. D. Kossoff, W. E. Dubbin, M. Alfredsson, M. G. Macklin, & K. A. Hudson-Edwards. (2014). Mine tailings dams: Charac-teristics, failure, environmental impacts, and remediation. Ap-plied Geochemistry. 51, 229-245. https://doi.org/10.1016/j.apgeochem.2014.09.010.
4. Stefanyshyn, D. V. (1997). Problems of accident of dams of tailings dumps of mining and processing enterprises. Bulletin of the National University of Water and Nature Management, 3(39), 118-126.
5. Solsky, S. V., Stefanishin, D. V., Finagenov, O. M., & Shulman, S. G. (2006). Reliability of drives for industrial and household waste. SPb.: “VNIIG them. B. E. Vedeneeva”.
6. Stefanyshyn, D. V. (2011). Predicting accidents on dams in problems of assessment and ensuring their reliability and safety. Hydropower of Ukraine, 3-4, 52-60.
7. Smetana, O. M., & Smetana N. A. (2011). The lithogeo-chemical concept of ore treatment. Ecology and nature man-agement, 14, 178-184.
8. Pikarenya, D. S., Orlinskaya, O. V., Zberovsky, A. V., & Laznikov, A. M. (2012). Research assessment of the strength and filtration properties of a hydraulic structure in the Skazhe-naya beam of the Volnogorsk mining and metallurgical plant. Collection of scientific works of NMU, 37, 310-315.
9. Methodological recommendations for assessing the risk of accidents in hydraulic structures of reservoirs and industrial waste storage facilities (n.d.) Retrieved from: http://www.gostrf.com/normadata/1/4293841/4293841860.htm.
10. Methodological recommendations for calculating the devel-opment of hydrodynamic accidents at liquid industrial waste storage (n.d.) Retrieved from: http://docs.cntd.ru/document/1200031995.
11. Hapich, H .V. (2013). Evaluation of the technical condition of soil dams as an element of the ecological monitoring system of territories. Collection of scientific works of NMU, 42, 168-173.

Published

2020-07-01

How to Cite

Hapich Н., Pikarenya, D., Rudakov, L., Maximova, N., & Makarova Т. (2020). ASSESSMENT OF THE ACCIDENT RISK AND CALCULATION OF THE FAILURE PROCESSES IN TERMS OF THE EARTH DIKE OF A TAILING DAM: Array. Municipal Economy of Cities, 3(156), 99–104. Retrieved from https://khg.kname.edu.ua/index.php/khg/article/view/5605