Substantiation of the optimal performance parameters for a quarry during the stage-wise development of steeply dipping ore deposits

Abstract

The use of stage-wise schemes in the development of deep quarries is one of the ways to increase the economic efficiency of mining a deposit and determining the optimal stage parameters remains an urgent task. Such parameters are stage depth, bench height, block length, etc. However, there is a wide range of values for these parameters. Therefore, to select the optimal values and evaluate the effectiveness of design solutions, it is advisable to use the net present value, which is an international notion. As a result of the analysis of data on deposits, a large number of variable indicators can be identified that presumably affect the efficiency of mining. The article proposes to divide all parameters of the quarry mining into two types: mine engineering and economic. The importance of each of them is determined by the measure of influence on the net present value. Thus, to assess the measure of influence of mining indicators, the average values of each of them are taken, and as a result of the alternating change of one parameter under study, the measure of its influence on the discounted income received is estimated. The results of the analysis of relevant factors, their evaluation and comparative analysis are important indicators that significantly affect the design decisions made and the effectiveness of the investment project.

Selection of mining technology at Anhydrite Mine

“…Каждая из перечисленных технологий обладает высокой технологичностью процессов проходки, высокими темпами отработки и гибкостью в своем использовании. Основные параметры системы разработки обоснованы геомеханическими расчетами с учетом горно-геологических и горнотехнических факторов hqqkednb`mhe chdpncenknch)eqjhu rqknbhi bedemh" p`anŠ [7,8], схема подготовки учитывает ранее выполненное разделение шахтного поля на выемочные блоки (панели) [9].…”

Comprehensive study of filtration properties of pelletized sandy clay ores and filtration modes in the heap leaching stack

“…Introduction. The concept of sustainable development of mining enterprises involves the development of technologies aimed at low-waste development of solid mineral deposits [1,2] and the maximumextraction of metals from poor off-balance ores [3][4][5], taking into account the required environmental standards [6,7]. In practice, various technologies have been tested for extracting noble metals from ores [8][9][10], including heap leaching (HL), which is a promising and relatively cheap technology for processing poor and off-balance ores containing gold, silver and other useful components [11].…”