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A model for open-pit pushback design with operational constraints.
- Source :
- Optimization & Engineering; Mar2023, Vol. 24 Issue 1, p623-639, 17p
- Publication Year :
- 2023
-
Abstract
- Open-pit mines are surface excavations created to extract valuable material which, in most cases, is located near the surface. Pushbacks are connected regions of a mine with enough working area to support the mining operation over a defined period. Pushbacks designed without taking into consideration haulage ramps are defined here as semi-practical pushbacks. We introduce a new optimisation model for semi-practical pushbacks that accounts for operational conditions: minimum operational width and connectivity within the blocks that compose the pushbacks. Additionally, we propose an algorithm that uses a Sliding Window Heuristic, variable bounding, and other preprocessing routines to obtain solutions with less than 10% optimality gap for mining instances ranging between 30,000 to 50,000 blocks. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13894420
- Volume :
- 24
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Optimization & Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 161960900
- Full Text :
- https://doi.org/10.1007/s11081-021-09699-9