无人直升机航磁方法在安徽省马鞍山市向山南—大甸塘地区铁矿普查中的应用

doi:10.11720/wtyht.2021.1382

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Abstract

With Xiangshan South-Dadiantang area of the Ningwu volcanic basin as an example, the authors used the methods of geology and unmanned helicopter aeromagnetic to explore the prospecting work in the deep and peripheral parts of the old mine. Comprehensive analysis and fine inversion of aeromagnetic anomalies were conducted to determine the location of the borehole. All the drill holes intersected ores in the depth of the old mine, which proves the effectiveness of this method. The result also provides a reference for the rapid and effective development of prospecting work in the deep and peripheral areas of old mines in areas with similar working conditions in the future.

Key words： unmanned helicopter aeromagnetic iron deposit old mine

Received: 31 July 2020 Published: 20 August 2021

ZTFLH:

P631

Corresponding Authors: ZHAO Guo-Feng E-mail: 894187326@qq.com;190285723@qq.com

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	Articles by authors
	Wei CHEN
	Guo-Feng ZHAO
	Zhen-Zheng FEI
	Ding LUO
	Jiang-Ying PENG
	Yan HUANG
	Shuo JIA

Cite this article:

Wei CHEN,Guo-Feng ZHAO,Zhen-Zheng FEI, et al. The application of unmanned helicopter aeromagnetic method to the survey of the iron deposit in Xiangshannan-Dadiantang area, Ma’anshan City, Anhui Province[J]. Geophysical and Geochemical Exploration, 2021, 45(4): 890-897.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2021.1382 OR https://www.wutanyuhuatan.com/EN/Y2021/V45/I4/890

Geological condition of working area(according to the revision of the geological map provided by the 322 Geological Team)
1—Quaternary; 2—Cretaceous dawangshan formation; 3—diorite porphyrite; 4—trachyte; 5—stratigraphic boundary; 6—known fault; 7—survey area

Geophysical characteristics of rocks and minerals from working area

Integration of aeromagnetic measurement system

Magnetic anomaly contour maps after polar treatment and upward extension different heights
a—RTP; b—upward continuation 100 m; c—upward continuation 200 m; d—upward continuation 300 m

Map of aeromagnetic local anomalies(residue from upward continuation 300 m)

The inferred linear structure (fault)
a—the horizontal first order directional derivative of 135 degrees; b—the horizontal first order directional derivative of 45 degrees; c—RTP magnetic anomalies

The inferred boundary of magnetic rock mass
a—TA; b—TA-THDR; c—RTP magnetic anomalies

Schematic diagram of exploration section location

HC06 abnormal 2.5D forward fitting calculation results of two profiles
1—measured curve; 2—fitted curve; 3—flight altitude; 4—number of aeromagnetic anomaly; 5—Quaternary; 6—Cretaceous Dawangshan formation; 7—altered diorite porphyrite; 8—diorite porphyrite; 9—known iron ore body; 10—presumed iron ore body; 11—goaf; 12—known borehole

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