Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

The proposed application aims to further develop our recently achieved approach for tricone drill bit conditionx000D
monitoring in mining applications. The mining industry is moving toward automation and autonomousx000D
machinery for increasing the efficiency and precision in production. A successful automated blasthole drillingx000D
condition monitoring and control system is a vital step forward. Drilling and blasting are two preliminary tasksx000D
in large surface mining operations and constitute more than 15% of the total costs. Tricone bits are preferred inx000D
most rotary drilling applications for blasthole drilling in a surface mining operation. Bit wear and subsequentx000D
failure in the drill hole creates major delays in removing the detached cone(s) from the hole to avoid damage tox000D
the rock crusher equipment. Autonomous drilling would not be achievable without a machine-sensing systemx000D
for recognizing when the drill bit is worn and requires replacing.x000D
In previous study extensive drilling tests were conducted in ArcelorMittal's iron ore mine in Quebec as well asx000D
Teck's Highland Valley Copper mine in British Columbia. The blasthole drill rigs were instrumented and datax000D
were gathered. The vibration signal of a drill rig has been analyzed .The correlations between vibration signalx000D
behavior and bit wear state has been established.x000D
The primary goal of this proposal is to design and build a Bit Condition Monitoring System (BCMS) byx000D
Laboratory as well as field tests on two typical Canadian hard-rocks and soft-rocks. This technologicalx000D
development could lead to cost saving and benefit to the Canadian mining operations. The most obviousx000D
benefit is that this will optimize a complete usage of bit life and remove the additional costs by preventingx000D
catastrophic failure. In addition, in the context of autonomous drilling to increase the productivity, BCMS willx000D
become a necessary requirement. There will also be an environmental benefit in the reduced energyx000D
consumption due to more efficient and improved drilling technology.