Hasil untuk "Mining engineering. Metallurgy"

Aitber Bizhanov, Pruet Kowitwarangkul, Sergey Gavrilovich Murat et al.

Cao Hui

Mao Yuebo, Ma Wenyuan, Li Xinhai

Li Yuxi

Jiang Zhouhua, Dong Yanwu, Xu Kuangdi

Huang Xiaowei, Xu Kuangdi

Zhong Jingming, Wang Dongxin, Xu Kuangdi

Liao Jiangnan, Xu Kuangdi

Mojtaba Yeganejou, Mahdi Badiozamani, Ali Moradi-Afrapoli et al.

Predicting the fleet requirement based on fleet productivity estimation is one of the critical parts of a robust long-term mine plan. The dispatch logic that determines the return destination of the empty trucks is significantly important in the overall full and empty travel distances and trucks’ productivity. In this paper, a Monte-Carlo simulation model is presented to mimic the real truck-and-shovel operations and measure trucks’ productivity in terms of Tonne Per Gross Operating Hour (TPGOH). A linear programming model is integrated into the simulation model to optimize the dispatch decision through distance minimization subject to the mine's production schedule. The historical data records of oil sands mining operations are used to validate model's performance. The results show significant improvement over the existing mine site's method with closely matching the real TPGOH and better estimation of the total empty travel distance, as a result of new dispatch model implementation.

Ümit Karadoğan, Gökhan Çevikbilen, Sevde Korkut et al.

Wu Aixiang, Xu Kuangdi

D. Bahrami, L. Zhou, L. Yuan

Paloma Lazaro, Moe Momayez

O. M. S. Rodrigues, A. C. Araujo, A. E. C. Peres

M. N. Chandraprabha, K. A. Natarajan

Tom Brady, Lewis Martin, Rimas Pakalnis

A major focus of ground control research presently being conducted by the Spokane Research Laboratory of the National Institute for Occupational Safety and Health (NIOSH) is to incorporate weak rock masses (such as are associated with operations in the Carlin Trend in Nevada) into existing design relationships. The original database that led to most of the empirical design relationships presently employed in hard-rock mining was derived from fair-to-good-quality rock. In this study, the relationship between weak rock quality and opening design (non-entry/entry methods) is being investigated. The common factor in all mines is a weak back or wall. This work attempts to provide tools that will enable a mine operator to make economic decisions that will also ensure a safe working environment.

K. A. Natarajan, J. M. Modak, P. Anand

J. B. Hiskey, V. P. Atluri

B. J. Scheiner, D. A. Stanley

Jayachandran M