Solutions to improve the mining technology diagram for ore bodies at Vi Kem Copper Mine, Lao Cai province, Vietnam

Abstract

Designing and selecting a mining technology scheme for ore body conditions is complex because it depends on many factors. The technology schemes need to ensure efficiency and safety in the production process. Therefore, it is necessary to propose solutions to improve the mining technology scheme to exploit ore bodies to meet the current production requirements at underground mineral mines of the Vinacomin – Minerals Holding Corporation. Based on the current mining plan and mining technology design scheme of the Vi Kem Copper Mine, the authors conducted a survey, analysis and evaluation, thereby proposing solutions to improve the mining technology scheme for ore bodies at the Vi Kem Copper Mine and selected an area in the mine to conduct design calculations for the proposed solution. To achieve the research results presented in this article, the authors used methods such as data collection, analysis and synthesis, field surveys, analysis of results and evaluation, combined with theoretical approaches to calculate the experimental design area. The proposed options to improve the mining technology diagram are highly feasible when applied. There is a high possibility of applying mechanization in technological stages, increasing productivity and production efficiency of the mine, increasing ventilation capacity, and improving labor safety. The improved technology is basically the same as the preparation plan of the old mining technology diagram. However, each item will be optimized to increase the application of mechanization, bringing about production efficiency and labor safety. The research results show high feasibility when applying the improved technology diagram. Technical calculations show that the mining capacity of each chamber is 1.76 times higher, and labor productivity is nearly 3 times higher than the current technological scheme.