The purpose of this study is to develop a micro computer-based dispatching system to assist mine operators in choosing the optimal truck assignment under a set of given conditions. The system is active, semi-automated and includes procedures to suggest to the dispatcher the best truck allocation with the aim of reaching a specified production objective. / New heuristic dispatching procedures, namely Adjusted Travel Empty and Load Time, Adjusted Cycle Time, Adjusted Cycle and Waiting Times and Minimize Cycle Time have been developed in order to consider the achievement of objectives throughout the working shift. These procedures are tested and compared with the fundamental heuristic procedures; Locked-in, Maximize Truck Use, Maximize Shovel Use, Match Factor and Priority Number. The heuristic procedures do not attempt to optimize the decision but produce acceptable results most of the time. / For the purpose of testing the new heuristic dispatching procedures a computer simulation program was designed. This program resembles as much as possible the real production process. An advance-clock approach was selected to allow insertion of procedures at any point in the haulage cycle. / It was found that truck dispatching systems offer the potential for significant improvements in productivity. The new procedures are also able to consider production objectives. However each mine must evaluate each dispatching procedure independently before a definitive decision is made.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.39321 |
| Date | January 1992 |
| Creators | Lira Bonates, Eduardo Jorge |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy (Department of Mining and Metallurgical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001289653, proquestno: NN74811, Theses scanned by UMI/ProQuest. |
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