Improvement of blasting technology at gold-ore mining enterprises using contour blasting
Serdaliyev Y. Bakhramov B. Alip A.
2025Dnipro University of Technology
Mining of Mineral Deposits
2025#19Issue 283 - 94 pp.
Purpose. The research purpose is to develop and substantiate recommendations for improving the technology of drillingblasting operations in open-pit mining of gold-ore deposits. The research is aimed at optimizing the drilling-blasting process parameters taking into account physical-mechanical properties of rocks, conditions of ore mass occurrence and requirements for the quality of rock mass crushing. Methods. Qualitative and quantitative analysis methods are used for the research. The compliance of the drilling-blasting technology with the design solutions is assessed, and the actual condition of the quarry benches and near-wall mass after blasting is analyzed. A numerical model describing the influence of contour blasthole charges on the near-wall mass has been developed, taking into account the parameters of the bench height and charge diameter. Particular attention is paid to the development of recommendations for improving the quality of ore mass breaking, decreasing dilution and reducing the nearwall mass breaking. The effectiveness of the proposed solutions is confirmed by conducting a series of test blasts with subsequent assessment of their results. Findings. The research results have shown that the existing parameters of drilling-blasting operations at the Pustynnoye Mine do not fully comply with the mining-technical conditions, which leads to inconsistency with the design slope angles and dilution of rock mass. Implementation of the presplitting method and optimization of charge parameters make it possible to improve the quality of mass breaking and reduce the seismic impact. The resulting dependences will help to accurately select blast parameters, improving the efficiency of drilling-blasting operations. Originality. The novelty is in the development and implementation of an integrated approach to the optimization of drilling-blasting operations at the Pustynnoye Mine. The research has identified the optimal parameters, including blasthole diameters, charges for splitting, explosive density and stemming material granulometric composition. Practical implications. Implementation of the proposed methods will increase the efficiency of drilling-blasting operations, improve rock mass crushing, stabilize slopes and reduce seismic impact on the near-wall mass. Optimizing parameters such as blasthole diameters, specific explosive consumption and charge densities will reduce costs while maintaining efficiency. The developed passports of drilling-blasting operations will help to adapt the processes to changing conditions and ensure the safety and accuracy of mineral extraction.
bench , blast energy , blasting operations , crushing , failure zones , mining , quarry , rock mass , slope stability
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Satbayev University, Almaty, Kazakhstan
Satbayev University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026