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Vol 152
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Determination of the optimal volume of technogenic reserves ready for excavation of a tailings dump on the basis of statistical data. Notes of the Mining Institute

G. A. Kholodnyakov1
E. B. Gridina2
About authors
  • 1 — Associate Professor G.V. Plekhanov Saint Petersburg State Mining Institute
  • 2 — Research assistant G.V. Plekhanov Saint Petersburg State Mining Institute
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The high profitability of open development of technogenic deposits is proved; on the basis of statistical data, the optimum volume of technogenic reserves ready for excavation of the tailings dump is established. When solving the problem set in the form of a statistical model, the analysis of random values with the conditional distribution function has been carried out and the solution regarding some a priori distribution of states of the mining and technical system minimizing the expected value of the loss function has been obtained. The necessity of increasing the accuracy, efficiency and reliability of design decisions in conditions of the market model of economy, the stochastic nature of the initial data is substantiated. It is shown that the development of man-made deposits at the achieved level of technology can become very cost-effective. On the basis of the Bayesian function, a general expression for the optimal amount of reserves accumulated in a technogenic deposit is obtained. The calculation is made on the example of raw materials accumulated in the tailings pond. The proposed methodology is applicable to technogenic deposits of any class.

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