Development of a dynamic approach to solving the problems of operational planning of mining and transport work in the iron ore surface mine

Abstract

Purpose of the work is to increase the efficiency and reliability of methodological support for the monthly-daily planning of mining and transport operations in the iron ore surface mine. The methods. Analysis and structuring of many possible sequences of development of monthly planning blocks. Substantiation of criterion estimates of structured groups of sequencing of monthly planning blocks. The use of the branch and boundary method for the analysis, elimination of impractical variants of sequences and formation of many rational variants of them. Solution to the typical task of monthly planning of mining and transport operations in the iron ore surface mine. Comparative analysis of the efficiency and reliability of two approaches: solving only the typical problem of monthly-daily planning and formation of the domain of rational sequences and solving the typical problem in the formed area. Findings. The rules of analysis and structuring of a set of possible sequences of working out of monthly plan blocks are offered. The criterion estimates of rational variants of possible sequences are substantiated. On the basis of the method of branches and borders the method of determination of rational sequences of working out of planned monthly blocks during a month is created. The originality. The dynamic approach to the solution of tasks of operative planning of mining and transport works, which was realized by the method of determination of rational sequences of working out of planned monthly blocks during a month, was further developed. Practical implication lies in the general methodology of monthly-daily planning of mining and transport works of the iron ore surface mine, which includes the created method of determining rational sequences of working out of planned monthly blocks during the month and the method of solving a typical solution of a typical problem. Comparative analysis of the results of monthly-daily planning based on real production data of 33 monthly mining programs without using the created methodology and with it showed a decrease in fluctuations of volume and quality indicators in daily volumes of ore delivery to reloading points. In addition, cases of incompatibility of the original data decreased by 8-12%, which indicates that the software is more reliable.