Evaluation of stability of sides of quarries and dumps on the basis of a risk-oriented approach

Abstract

evAluAtIon of stABIlIty of sIDes of quArrIes AnD DuMps on the BAsIs of A rIsK-orIenteD ApproAch purpose. The current conditions for open pit mining lead to a number of problems that arise both for domestic and foreign enterprises of the mining complex. In this regard, the aim of the article is to assess the stability of the sides of quarries and dumps based on a riskbased approach. Methodology. The main research method is a method for analyzing the probability of certain risks, and the method is based on the use of a riskbased approach to assess the risk of collapse in quarries. This approach allows us to assess the stability of the quarry sides and dumps, as well as to select a set of measures to ensure the stability of the array. findings. The authors analyzed the existing shortcomings in the regulatory documents related to ensuring the sustainability of quarry sides and dumps. It was found that at the present stage they are not able to effectively ensure the development of internal local documents of enterprises in the field of the occurrence of damage associated with the collapse of rock masses. The data ob tained from the construction of the fault tree showed that a comprehensive solution to the problem is needed by attracting a risk based approach and selecting measures to strengthen the quarry sides and dumps. originality. For the first time, the authors applied a preventive riskbased approach to solve the problems with the stability of quarry sides and dumps in a real mountain facility. practical value. The results can be used to reduce the level of occupational injuries by reducing or eliminating emergencies as sociated with caving and landslide phenomena during the operation of an existing quarry.

Development of methodology for scenario analysis of investment projects of enterprises of the mineral resource complex

“…This is due to the fact that for each mineral deposit it is always difficult to determine their reserves with high accuracy due to the peculiarities of the reserves occurrence, constant dynamics and complexity of mining and geological conditions. Therefore, when developing and implementing appropriate investment decisions, it is necessary to take into account the specifics of a particular deposit, as well as the expedient period of mining enterprises operation, which directly depends on the development period of the corresponding deposits, depending on the volume of mineral reserves and the profitability of mining [25].…”

“…[7000, 8000]  [6000, 7000]  [5000, 6000]  [8000, 9000]  [4000, 5000]  [9000, 10000]. (25) In this case, we obtain the following Fishburn estimates (the probabilities of falling into the interval):…”