Management of Ore Dilution by Substantiating the Optimal Parameters of Treatment Chambers and Tselikov

Abstract

The article is devoted to the study of the optimal parameters of the cleaning chambers and targets during the processing of low-power ore bodies by the system of a sub-storey collapse. A detailed analysis of existing methods for calculating the permissible parameters of cleaning chambers and tselikov was carried out. On the basis of an analytical comparison, the effectiveness of leaving inter-chamber and inter-floor targets in the fight against over-planned dilution during mining of ore bodies with a low power of no more than 2.5-3.0 meters is estimated. Special attention was paid by the authors to the results of foreign researchers. As a result of the research, a stability graph was constructed to determine the permissible parameters of the cleaning chambers depending on the geological strength index. The purpose of the article is to substantiate the optimal parameters of purification chambers and tselikov in order to reduce the dilution of ore during the development of low-power ore deposits.Methodology. The analysis of existing methods and design solutions used to substantiate the optimal parameters of cleaning chambers and tselikov is carried out. Geomechanical studies of the rock mass have been carried out using recognized methods of the International Society for Rock Mechanics (International Society for Rock Mechanics). By mapping the walls of the workings, the geological index of the GSI array is determined. Based on the Mathews graphical stability method based on the rock classification system, the hydraulic radius was measured, characterizing the ability of the rock mass to remain stable under given conditions of stress, structural organization of violations of the massif and orientation of the cleaning space. Numerical analysis of the rock mass by finite element methods is performed. On the basis of the performed studies, a dependence graph is constructed that allows determining the permissible parameters of the chamber depending on the geological strength index.