Analysis and interpretation of magnetic data acquired with a rotary-wing UAS (unmanned aircraft system) for gold exploration

用于金矿勘探的旋翼 UAS（无人机系统）获取的磁数据的分析和解释

• 批准号: 529752-2018
• 负责人: Samson, Claire
• 金额: $ 1.82万
• 依托单位: École de technologie supérieure
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=664203
• 关键词: Analysis; interpretation; magnetic; data; acquired

Gold exploration in the Canadian boreal forest is typically done first at reconnaissance scale using manned**aircraft and helicopters instrumented with magnetometers. Prospective areas are later investigated in more**details by ground crews. Ground magnetic surveys are laborious and costly, and deliver datasets where the**coverage is irregular due to the presence of obstacles such as swamps and steep topography. Unmanned aircraft**systems (UASs) have much potential for gold exploration because they bridge the gap between**reconnaissance-scale and ground surveying. UASs fly closer to the ground and slower than conventional**manned aircraft. They also acquire very detailed, regularly-spaced data faster and without the difficulties of**ground surveying.**The proposed project will investigate the usefulness of acquiring UAS magnetic data as part of a gold**exploration campaign. A few test surveys have demonstrated that UASs instrumented with magnetometers can**fly safely, follow a regular flight pattern, and acquire high-quality data. This project will go further in that**magnetic data will be analyzed in unprecedented detail to lead a three-dimensional model of the subsurface. It**will take advantage of a 2018 survey done with a rotary-wing UAS in Iamgold's Nelligan property, located**60 km SW of Chibougamau, Quebec.**As part of the project, the effect of the wind and the UAS behavior in flight on data quality will be investigated.**The UAS magnetic data will be processed and presented as maps and cross-sections. Finally, a**three-dimensional model of the subsurface will be assembled, taking into account knowledge of the local**geology.

加拿大北方森林的金矿勘探通常首先使用装有磁力计的有人驾驶飞机和直升机进行勘察。地勤人员随后会对可能的区域进行更详细的调查。地面磁测既费力又昂贵，而且由于存在沼泽和陡峭地形等障碍物，数据集的覆盖范围不规则。无人机系统在金矿勘探中具有很大的潜力，因为它们弥补了侦察规模和地面测量之间的差距。无人机比传统的有人驾驶飞机飞得更接近地面，速度更慢。它们还可以更快地获得非常详细的、规则间隔的数据，并且没有 ** 地面测量的困难。拟议项目将调查获取无人机系统磁测数据作为黄金 ** 勘探活动一部分的有用性。一些测试调查表明，装有磁力计的无人机可以安全飞行，遵循常规飞行模式，并获得高质量的数据。该项目将更进一步，因为 ** 磁数据将得到前所未有的详细分析，以建立地下的三维模型。它 ** 将利用2018年在Iamgold位于魁北克奇布加毛西南 **60公里处的Nelligan房产中使用旋转翼UAS进行的调查。作为该项目的一部分，将调查风和无人机系统飞行行为对数据质量的影响。将对无人机系统的磁测数据进行处理，并以地图和剖面图的形式提供。最后，考虑到当地地质情况，将组装地下的三维模型。