Economic and Mathematical Model of Actual Mining Ore Lasting and Information System for Management of Mining Work According to the Criterion of Achieving Their Economic Efficiency

An urgent problem in the development of iron ore deposits is the need for effective management of the production process of ore mining. The importance of this management is explained by the direct dependence of obtaining the necessary economic and technical results predicted in the working projects of mining units from the effectiveness of managing the project implementation process in practice. The high level of complexity of the tasks of managing the production process requires the development and use of a system of automated control of the production process APCS at a mining enterprise. All such automated control systems already developed at present are aimed at solving only particular tasks of managing certain areas of enterprise activity and are not integrated with each other. This complicates the implementation of this type of production and the efficiency of making managerial decisions on its preparation and implementation. At present, the authors are developing such a process control system, taking into account the requirements for the integration of its technological elements and ensuring consistency in solving the problems of managing the production process at underground iron ore mining enterprises. The methodological provisions on the basis of which the automated control system is being developed provides for a unified fundamental and methodological approach, mathematical, organizational and technical bases that ensure the full integration of its structural elements, consistency in management and organizational decisions. The key element of the automated control system is the computer-aided design system (CAD) of mining units, as the basic elements of the production process at the enterprise. This CAD is designed to solve one of the most difficult tasks in ensuring the functioning of a mining enterprise - the choice of the optimal variant of the mining system for mining units according to the criteria for ensuring the highest economic efficiency of ore extraction. The basic element of CAD is a subsystem for economic and mathematical modeling of the process of developing ore reserves of mining blocks / panels. The totality of these objects are the main production elements of mining enterprises and it is in them that the extraction of ore mass from the ore reserve and the formation of its qualitative and physical and mechanical characteristics are carried out. The process of mining the ore mass forms the main part of the cost of commercial iron ore products produced from it. Based on the decisions made in the working drafts of the set of mining units, the production and technological system of mining enterprises is functioning. The system for managing its functioning organizes this process in such a way as to ensure the development of their reserves with the characteristics, parameters and economic results provided for by the working projects that are developed using CAD. The solution of design problems in CAD is one of the key elements of the entire system for organizing the development process. The authors have developed a block diagram of the cyclical algorithm of this organization, reflecting the logical sequence of management stages and their relationship. This algorithm is the basis of the functional model of the process control system. The described APMS continues to be developed and refined with new structural modules and software blocks. These developments represent the materials of the methodological, organizational, mathematical and program nature of the automated control system, expanding its capabilities. The largest of these developments are: a methodology for computer-aided design of mining enterprises, which determines the structure, functions and operation of the automated control systems of these enterprises, CAD for technological processes of underground mining of iron ores, methodological foundations and rules for ensuring the safety of mining ore deposits, a methodology and software for normalizing extraction indicators ores.