Developing a mathematical model to optimize long - term quarrying planing for limestone quarries producing cement in Vietnam
- Authors: Bao Dinh Tran 1*, Trong Dinh Vu 2, Viet Van Pham 1, Tuan Anh Nguyen 1, An Dinh Nguyen 1, Giang Huong Thi Le 3
1 Department of Surface Mining, Mining Faculty, Hanoi University of Mining and Geology, Vietnam
2 TU Bergakademie Freiberg, 09599 Freiberg, Germany
3 Faculty of General Education, Hanoi University of Mining and Geology, Hanoi, Vietnam
- Keywords: Limestone quarry, Long term planning, Mathematical model, Raw material, Vietnam.
- Received: 8th-Sept-2020
- Revised: 29th-Sept-2020
- Accepted: 10th-Oct-2020
- Online: 15th-Oct-2020
- Section: Mining Engineering
Mathematical model researches in optimizing long - term quarrying planning for limestone quarries supplying to the cememt factories have not been popular in Vietnam. The paper shows a mathematical model based on Mixed Integer Linear Programming as well as effective method to cope with long - term quarrying planning for the quarries. Techniques grouping block cells into a mining room and decision variable elimination techniques was employed to reduce the size of the problem. This enable to form an optimal method with proper time. The model and the algorithm are an effective tool to conduct a long - term planning for the quarries, enabling to supply the quatity and quality enough of raw materials to the factory. The model was demonstrated and practically evaluated when being applied and compared with one of the popularly commercial sofwares in mine schedule, GEOVIA Mines.
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