MINING AND TECHNICAL JUSTIFICATION OF THE PARAMETERS FOR OPEN-PIT MINING OF THE TAUSHAN DEPOSIT BASED ON BLOCK MODELING
Abstract
This paper presents a mining engineering substantiation of the open-pit development parameters for the Taushan gold deposit based on digital geological modeling and pit optimization. The study aimed to develop an ore–waste block model of the deposit, determine the optimal boundaries of open-pit mining operations, and evaluate the economic feasibility of the proposed mining design. The research employed geological modeling, block modeling, spatial interpolation, economic optimization, and three-dimensional mine design using Micromine 23.5 and Leapfrog 2024.1 software. Wireframe and block models of the ore bodies were constructed using 0.5 m sub-blocks, providing a high level of accuracy in representing the complex geological structure of the mineralization. Based on optimization calculations, rational pit boundaries were determined for a cut-off grade of 0.4 g/t Au, taking into account geological, mining, technological, and economic constraints. The results demonstrate that the application of digital modeling techniques improves the reliability of mineral resource estimation, supports the scientifically justified selection of open-pit mining parameters, and provides a reliable basis for long-term mine planning. The proposed approach can be applied to the design and development of other structurally complex gold deposits.
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