水厂铁矿多旋翼无人机航磁测量数据处理方法研究  

Processing Method of Multi-Rotor UAV-Based Aeromagnetic Data in the Shuichang Iron Deposit

作　　者：杨再立[1] 王帅 耿东阳 崔伟[1] 周颖 陈召曦[2] YANG Zaili;WANG Shuai;GENG Dongyang;CUI Wei;ZHOU Ying;CHEN Zhaoxi(No.2 Geological Party,Hebei Bureau of Geology and Mineral Resources,Tangshan,Hebei 063000;School ofGeophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083)

机构地区：[1]河北省地矿局第二地质大队,河北唐山063000 [2]中国地质大学(北京)地球物理与信息技术学院,北京100083

出　　处：《地质与勘探》2024年第5期1002-1012,共11页Geology and Exploration

基　　金：河北省预算局地勘项目(编号:13000023P0069B4101530);国家自然科学基金面上项目(编号:42274183)联合资助

摘　　要：水厂铁矿位于唐山迁安隆起西缘铁矿成矿带,目前该矿区浅部矿体已经开采殆尽,迫切需要拓展深部开采空间。该矿区尾矿堆积严重,地表情况复杂,地面磁测工作困难。针对上述问题,本文开展了多旋翼无人机航磁测量、数据处理和对比分析研究。本次研究首次利用DN20G4型号四旋翼无人机搭载Magdrone R3磁通门传感器在该区开展了1∶1万大比例尺航磁测量。由于航磁原始数据中存在飞行平台引入的干扰磁场,基于Tolles-Lawson模型建立了飞行平台机动干扰误差磁补偿模型,使得飞行作业中存在的固定场干扰、感应干扰和涡流干扰都得到了有效解决。在磁补偿处理之后,通过切割线粗调平和细调平处理方法消除了测线间的水平差。最后,再将经过磁补偿、调平等处理后的结果与地面磁测资料进行比对,发现二者的异常形态高度一致,体现了这种处理方法的实用性和有效性。本文的研究结果可为今后在类似场景下,快速有效地开展老矿山深部及外围找矿工作提供参考。The Shuichang iron mine is located in the iron ore mineralization belt on the western edge of the Qian'an Uplift in Tangshan.Currently,the shallow ore body in the mining area has been fully mined,and there is an urgent need to expand the deep mining space.The tailings accumulation in the mining area is severe,and the surface conditions are complex,making it difficult to conduct ground magnetic surveys.In response to the above issues,this article conducted research on the aeromagnetic measurement,data processing,and comparative analysis of multi rotor unmanned aerial vehicles.This study is the first to use the DN20G4 quadcopter drone equipped with Magdrone R3 flux gate sensors to conduct 1:10,000 large-scale aeromagnetic measurements in the area.Due to the presence of interference magnetic fields introduced by the flight platform in the original aeromagnetic data,this paper establishes a magnetic compensation model for the maneuvering interference error of the flight platform based on the Tolles-Lawson model,which effectively solves the fixed field interference,induced interference,and vortex interference in flight operations.After magnetic compensation processing,the horizontal difference between measuring lines was eliminated through rough leveling and fine leveling of cutting lines.Finally,the results obtained through magnetic compensation and leveling were compared with ground magnetic survey data,and it was found that the abnormal shapes of the two were highly consistent,reflecting the practicality and effectiveness of this processing method.The research results of this article can provide reference for the rapid and effective exploration of deep and peripheral ore deposits in similar scenarios in the future.

关 键 词：无人机航磁系统 磁补偿 调平 水厂铁矿 迁安地区 河北 

分 类 号：P631[天文地球—地质矿产勘探]