نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی معدن، دانشکده مهندسی، دانشگاه سیستان و بلوچستان، زاهدان، ایران
2 گروه مهندسی معدن، دانشکده مهندسی، دانشگاه بیرجند، بیرجند
3 گروه مهندسی معدن، دانشکده مهندسی، دانشگاه سیستان و بلوچستان، زاهدان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Optimizing the cutting face orientation in dimensional stone mining presents a transformative approach to significantly boost operational efficiency and reduce material waste. Inefficient selection of cutting direction in dimension stone quarries without considering the direction of discontinuities in the rock mass not only escalates costs but directly impacts profitability, enhancing operational efficiency and minimizing waste. This study introduces a novel integrated framework to evaluate how variations in cutting face orientation influence extracted block size, block recovery rate, and mining face stability. The research focuses on a marble quarry near Tabas, Iran. Critical structural discontinuities that dictate optimal cutting strategies and stability conditions were surveyed. By systematically surveying the geometrical properties of principal joint sets, four cutting directions at azimuths of 0°, 15°, 30°, and 45° were proposed and rigorously tested. Employing advanced 3D block modeling that incorporates the interplay between cutting face orientation and joint dip/dip directions, block numbers and block volume for each scenario were quantified, thus allowing precise recovery rate estimation. Remarkably, while the 15° azimuth direction maximized block recovery, subsequent stability analyses revealed significant displacement and instability risks. This critical insight, derived from modeling unbalanced forces and displacement magnitudes, emphasizes the importance of balancing yield optimization with operational safety. Ultimately, the comprehensive approach identified the 45° azimuth direction as the optimal cutting face orientation, achieving a strong recovery rate combined with minimal instability. This innovative methodology not only advances cutting direction optimization but also establishes a robust decision-making model that integrates structural geology with stability mechanics, setting new standards for sustainable and efficient dimensional stone mining.
کلیدواژهها [English]
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