中低山区直升机重磁缓起伏测量方法研究

doi:10.11720/wtyht.2021.0090

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摘要

通过对AS350-B3直升机进行改装,集成了适用于中低山区的航空重磁测量系统。设计坡度最大为3°的三维测网,将直升机重磁测量首次应用于中低山区。测量效果显示,缓起伏测量方法可以在三维空间很好地保持飞机航迹,还可以有效控制测线切割线交点高度差,从而使测线切割线形成一个网,对磁场调平起到有利作用。平飞测量与缓起伏测量效果的对比说明,缓起伏测量方法可以兼顾重、磁两种测量手段,成图效果较平飞异常特征更加明显。

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	耿圣博
	闫红雨
	安战锋
	关海静
	王志博
	金久强
	徐明
	王鑫
	李冰
	郭琦

关键词 ：中低山区, 直升机重磁测量, 缓起伏, 三维测网

Abstract：

By the modification of the AS350-B3 helicopter, the airborne gravity and magnetic measurement system suitable for the medium-low mountainous area is integrated. The 3D measurement network with the maximum slope of 3° was designed, and the gravity and magnetic measurement method by helicopter was first applied in the medium-low mountainous area. The measurement results show that the slow rise and fall measurement method can keep the aircraft track well in the three-dimensional space, and can effectively control the height difference between the intersection points of the survey line and the cross line, so that the survey line and the cut line form a network, which plays a beneficial role in the magnetic field leveling. The comparison of the results of the horizontal flight measurement and the slow rise and fall measurement shows that the slow rise and fall measurement method can not only take into account both gravity and magnetic measurement methods, but also exert more obvious mapping effect than the horizontal flight anomaly characteristics.

Key words： medium-low mountainous area gravity and magnetic measurement method by helicopter slow rise and fall measurement method 3D measurement network

收稿日期: 2021-02-23 修回日期: 2021-04-23 出版日期: 2021-10-20

ZTFLH:

P631

基金资助:国家重点研发计划项目“实用化航磁三分量测量系统研发”(2017YFC0602000)

通讯作者: 安战锋

作者简介: 耿圣博(1985-),男,硕士,工程师,主要从事航空物探测量仪器研发与维护工作。Email: gengshengboy@163.com

引用本文:

耿圣博, 闫红雨, 安战锋, 关海静, 王志博, 金久强, 徐明, 王鑫, 李冰, 郭琦. 中低山区直升机重磁缓起伏测量方法研究[J]. 物探与化探, 2021, 45(5): 1248-1255.
GENG Sheng-Bo, YAN Hong-Yu, AN Zhan-Feng, GUAN Hai-Jing, WANG Zhi-Bo, JIN Jiu-Qiang, XUN Ming, WANG Xin, LI Bing, GUO Qi. A study of the measurement method for gravity and magnetic slow fluctuation of helicopter in the medium-low mountainous area. Geophysical and Geochemical Exploration, 2021, 45(5): 1248-1255.

链接本文:

https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2021.0090 或 https://www.wutanyuhuatan.com/CN/Y2021/V45/I5/1248

Fig.1 测区地质

Table 1 主要航空物探平台机型参数

Fig.2 探头远离飞机和螺旋桨时磁干扰的变化

Table 2 航空重磁测量系统设备质量

Fig.3 航空重磁测量系统设备安装示意

Fig.4 航空重磁测量系统

Table 3 重磁测量系统静态测试结果

Table 4 重磁测量系统动态测试结果

Fig.5 平面测网导航

Fig.6 三维测网导航

Fig.7 三维测网设计示意(“—.—” 为DEM数据)

Fig.8 设计测线效果

Fig.9 地形(上)与飞行航迹曲面(下)

Fig.10 航迹与设计测线高度差统计

Fig.11 测线切割线交叉点高度差统计

Fig.12 平飞航磁ΔT阴影(左)与缓起伏飞行航磁ΔT阴影(右)

Fig.13 平飞航空空间重力阴影(左)与缓起伏飞行航空空间重力阴影(右)

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