四极梯度测深在智利某铜矿区的应用

doi:10.11720/wtyht.2018.2504

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Abstract

In view of the fact that a certain copper mine in Chile is with great terrain elevation difference, sharp vertical cutting and low efficiency in running way of conventional symmetrical schlumberger units, this paper brings forward the proposal of utilization of complex unit combining symmetrical four-electrode and central gradient, that is to say, small polar distance is provided with symmetrical four-electrode detection device whereas large polar distance is provided with central gradient detection device. In the same sounding profile of the mine, the comparison of the sounding inversion results by symmetrical schlumberger unit and complex unit (symmetrical schlumberger + central gradient) indicated that the inversion results of the complex unit equals to the sounding effects of symmetrical schlumberger unit, but the complex unit is more efficient and more suitable for construction in complicated topography areas.

Key words： IP sounding central gradient method schlumberger complex unit inversion deep prospecting complex topography

Received: 05 January 2017 Published: 24 October 2018

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	Articles by authors
	Guang-Hui QIU
	Xue-Ai YIN
	Qi-Sheng ZHANG
	Hai-Liang ZHANG
	Hui-Jia ZHANG

Cite this article:

Guang-Hui QIU,Xue-Ai YIN,Qi-Sheng ZHANG, et al. The application of quadrupole gradient sounding to a certain copper mine in Chile[J]. Geophysical and Geochemical Exploration, 2018, 42(5): 1059-1063.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2018.2504 OR https://www.wutanyuhuatan.com/EN/Y2018/V42/I5/1059

岩性描述	标本数	$极化率变化范围 %$	$极化率平均值 %$	$电阻率变化范围 Ω · m$	$电阻率平均值 Ω · m$
晶屑凝灰岩	30	1.02~3.29	1.57	274~1835	827
凝灰岩	21	1.02~3.02	1.77	1094~6351	3023
电气石角砾岩	12	1.72~3.82	2.63	729~859	755
安山岩	18	1.92~3.64	2.32	242~8265	1976
花岗闪长岩	19	0.18~1.54	0.41	955~1255	4279
矿化绢云岩	6	5.69~13.21	8.04	253~1624	557
矿化电气石角砾岩	8	7.42~19.27	14.38	145~926	345
矿化角砾凝灰岩	26	8.42~23.43	16.61	162~1384	479
矿化石英二长岩	28	6.54~15.23	9.29	303~2052	662

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