Improving truck utilisation during shovel delays

Georgieff, David (2006). Improving truck utilisation during shovel delays B.Sc Thesis, School of Engineering, The University of Queensland.

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Author Georgieff, David
Thesis Title Improving truck utilisation during shovel delays
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2006-01-01
Thesis type B.Sc Thesis
Supervisor Mehmet Kizil
Total pages 79
Language eng
Subjects 091405 Mining Engineering
Formatted abstract
 Dispatching has been used for the past 25 years to improve truck and shovel utilisation and hence the overall productivity of the truck and shovel fleet. In geographically spaced out operations, the problem arises as to whether it is viable to relocate trucks large distances to another shovel circuit during shovel delays. The economic benefit of this decision depends on the length of the delay. Dispatching opportunities available to the trucks during shovel delays, ranging from refuelling to working under another loading unit, have been explored to assess the production opportunity resulting from operating two shovel fleets in the same pit under slightly under-trucked conditions. Historical records collected by the dispatching system at Hunter Valley Operations coal mine enabled the analysis of a two-month period where two shovels operated in the West Pit. This was compared to a two-month period where a single shovel operated in the pit to identify improvements in truck utilisation.

The results indicated queuing during shovel delays decreased when two shovels were operating in the pit due to the trucks leaving to work under the second shovel. This work has significance to the mining industry as material transportation represents approximately 50 per cent of operating costs and even a small improvement in productivity will lead to significant savings for an operation. Further research in this area will require computer simulation to quantify the potential margin of improvement.
Keyword Shovel productivity
Dispatch Systems
Cost analysis

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
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Created: Fri, 05 Sep 2014, 01:37:37 EST by Jessica Minshull on behalf of Scholarly Communication and Digitisation Service