Research Article
Maintainability Analysis of Underground Mining Equipment Using Genetic Algorithms: Case Studies with an LHD Vehicle
Table 1
Original LHD vehicle delay records from mine site.
| | Date | Shift | CTBF | Group | Failure type | TTR | TBF | Available time |
| | 2-Jan-06 | 7 | 8218.6 | Mobile | MH | 4 | 0.0 | 8.0 | | 2-Jan-06 | 8 | 8220.0 | Mobile | AV | 0 | 1.4 | 10.6 | | 3-Jan-06 | 7 | 8228.7 | Mobile | AV | 0 | 8.7 | 3.3 | | 3-Jan-06 | 8 | 8237.4 | Mobile | AV | 0 | 8.7 | 3.3 | | 4-Jan-06 | 7 | 8246.1 | Mobile | AV | 0 | 8.7 | 3.3 | | 4-Jan-06 | 8 | 8254.8 | Mobile | AV | 0 | 8.7 | 3.3 | | 5-Jan-06 | 7 | 8263.4 | Mobile | AV | 0 | 8.7 | 3.3 | | 5-Jan-06 | 8 | 8263.4 | Mobile | MM | 12 | 0.0 | 0.0 | | 6-Jan-06 | 7 | 8272.1 | Mobile | AV | 0 | 8.7 | 3.3 | | 6-Jan-06 | 8 | 8280.8 | Mobile | AV | 0 | 8.7 | 3.3 | | 7-Jan-06 | 1 | 8288.8 | Mobile | AV | 0 | 8.0 | 0.0 | | 7-Jan-06 | 2 | 8289.5 | Mobile | MM | 2 | 0.7 | 5.3 | | 7-Jan-06 | 3 | 8289.5 | Mobile | MM | 2 | 0.0 | 6.0 | | 8-Jan-06 | 7 | 8300.2 | Mobile | AV | 0 | 10.6 | 1.4 | | 8-Jan-06 | 8 | 8310.8 | Mobile | AV | 0 | 10.6 | 1.4 |
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CTBF: cumulative time between failures; TTR: time to repair; TBF: time between failures.
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