Development of Bit Condition Monitoring System (BCMS) for mine blasthole drilling

提出的应用程序旨在进一步发展我们最近在采矿应用中实现的三孔钻头状态监测方法。采矿业正朝着自动化和自主机械的方向发展，以提高生产的效率和精度。成功的自动化炮眼钻井状态监测与控制系统是向前迈出的重要一步。钻孔和爆破是大型露天采矿作业的两项前期工作，占总成本的15%以上。在大多数旋转钻井应用中，三牙轮钻头是露天采矿作业中炮眼钻井的首选。钻头磨损和随后在钻孔中出现的故障会导致从孔中取出分离锥体的时间大大延迟，以避免损坏岩石破碎机设备。如果没有机器感知系统来识别钻头磨损和需要更换，自动钻井是无法实现的。在之前的研究中，在ArcelorMittal位于魁北克的铁矿以及asTeck位于不列颠哥伦比亚省的Highland Valley铜矿进行了广泛的钻探试验。在爆破钻孔钻机上安装了仪器并收集了数据。对某钻机的振动信号进行了分析。建立了振动信号行为与钻头磨损状态的相关性。本课题的主要目标是通过实验室设计和构建钻头状态监测系统（BCMS），并对加拿大两种典型硬岩和软岩进行现场测试。这项技术的发展可以节省成本，并使加拿大的采矿业务受益。最明显的好处是，这将优化钻头的使用寿命，并通过防止灾难性故障来消除额外的成本。此外，在自主钻井以提高生产率的背景下，BCMS将成为一种必要的要求。由于钻井技术的改进和效率的提高，降低了能源消耗，这对环境也有好处。

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