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Saubi, Onalethata, Suglo, Raymond. (1404). Modification of the Kuz-Ram model using response surface methodology to optimise blast fragmentation. , 60(1), 105-112. doi: 10.22059/ijmge.2026.400194.595289
Onalethata Saubi; Raymond S. Suglo. "Modification of the Kuz-Ram model using response surface methodology to optimise blast fragmentation". , 60, 1, 1404, 105-112. doi: 10.22059/ijmge.2026.400194.595289
Saubi, Onalethata, Suglo, Raymond. (1404). 'Modification of the Kuz-Ram model using response surface methodology to optimise blast fragmentation', , 60(1), pp. 105-112. doi: 10.22059/ijmge.2026.400194.595289
Saubi, Onalethata, Suglo, Raymond. Modification of the Kuz-Ram model using response surface methodology to optimise blast fragmentation. , 1404; 60(1): 105-112. doi: 10.22059/ijmge.2026.400194.595289

Modification of the Kuz-Ram model using response surface methodology to optimise blast fragmentation

International Journal of Mining and Geo-Engineering
مقاله 12، دوره 60، شماره 1، خرداد 2026، صفحه 105-112    اصل مقاله (1.07 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/ijmge.2026.400194.595289
نویسندگان
Onalethata Saubi* ؛ Raymond S. Suglo
Department of Mining Engineering, Botswana International University of Science and Technology, Palapye, Botswana.
چکیده
Predicting and optimising blast-induced rock fragmentation is essential for improving downstream mining operations such as loading, hauling, and comminution. The widely used Kuz-Ram model often requires heuristic calibration of the rock factor, which limits its predictive accuracy in heterogeneous rock masses. This study introduces a modified Kuz-Ram model that integrates response surface methodology (RSM) to refine the rock factor estimation based on the blastability index (BI). A dataset of 80 production blasts from Orapa Diamond Mine, Botswana, incorporating four input parameters, powder factor, charge, rock factor, and blastability index was analysed. The RSM-modified model demonstrated a 12.2% improvement in prediction accuracy compared to the traditional Kuz-Ram model, achieving an R2 of 0.579, with RMSE and MAE reduced to 5.71 and 3.07 respectively. The approach preserves the empirical simplicity of Kuz-Ram while explicitly modelling nonlinear parameter interactions, offering a transparent yet robust tool for blast design. This method is practical for mines requiring rapid calibration to site-specific geological conditions and can be extended to include additional parameters, such as delay timing, in future work.
کلیدواژه‌ها
Kuz-Ram model؛ Response surface methodology؛ Blastability index؛ Rock factor؛ Optimising blast fragmentation
آمار
تعداد مشاهده مقاله: 57
تعداد دریافت فایل اصل مقاله: 93





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