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

这项拟议的应用旨在进一步发展我们最近在采矿应用中实现的Tricone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。一个成功的自动化钻孔状态监测和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。三牙轮钻头在露天采矿作业中的炮孔钻进中是首选的旋转钻头。钻头磨损和随后的钻孔故障造成了从孔中取出分离锥体(S)的重大延误，以避免损坏岩石破碎机设备。如果没有机器感应系统来识别钻头何时磨损并需要更换，自主钻探是不可能实现的。在之前的研究中，安赛乐米塔尔在魁北克的铁矿以及阿斯特克在不列颠哥伦比亚省的高地谷铜矿进行了广泛的钻探测试。对爆破孔钻机进行了仪器测试，并收集了数据。对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之间的关系，通过实验室设计和建立钻头状态监测系统(BCMS)，并对加拿大两种典型的硬岩和软岩进行了现场试验。这一技术开发可以节省成本，并为加拿大的采矿作业带来好处。最明显的好处是，这将优化钻头寿命的完全使用，并通过防止灾难性故障消除额外成本。此外，在自主钻井提高生产率的背景下，BCMS将成为一种必然要求。由于更高效和改进的钻井技术，能源消耗的降低也将带来环境效益。

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.