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| The application of a new device of borehole induced polarization to the copper-gold deposit |
| Ding-Yu JIA1,2,3, Yu-Hang WANG1,2,3, Gui-Mei WANG4, Wen-Li GAO1,2,3, Jie FENG1,2,3, Zong-Bao DING5, Yang OU1,2,3, Yang LI1,2,3, Dong-Ming LIU1,2,3 |
1. Institute of Geophysical and Geochemical Exploration, CAGS,Langfang 065000,China
2. Key Laboratory of Geophysical Electromagnetic Detection Technology, Ministry of Natural Resources, Langfang 065000,China
3. National Modern Geological Exploration Technology Research Center, Langfang 065000, China
4. CGE (Chongqing) Geological Instrument Co., Ltd., Chongqing 400000, China
5. Anhui Jinlian Geological and Mineral Technology Co., Ltd., Hefei 230022,China |
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Abstract Aimed at tackling the problems of low efficiency and the need of high data quality of IP observation methods in borehole, the authors developed a new device of borehole IP prospecting in this paper. The device can be used to measure the polarization field potential (V), potential difference (ΔV), secondary field potential (V2), potential difference (ΔV2) and time information (T) simultaneously by full waveform electrical method, and then obtain various IP parameters. In order to test the validity of the method, the authors studied the application of full waveform array IP to a copper-gold deposit in Anhui Province, obtained the connectivity of the drilled orebody, and determined the direction and distribution range of the orebody. The application results show that this bolehole IP observation of full waveform array method has high efficiency and strong anti-interference capability.
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Received: 15 January 2019
Published: 28 November 2019
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Corresponding Authors:
Yu-Hang WANG
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Schematic diagram of full waveform induced polarization method in borehole
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| 岩矿石名称 | 块数 | 极化率/% | 极化率几何平均值/% | 电阻率/(Ω·m) | 电阻率几何平均值/(Ω·m) | | 粗安玢岩、安山玢岩 | 35 | 0.35~87.79 | 18.17 | 131~19049 | 6187 | | 正长斑岩 | 8 | 1.26~11.47 | 5.12 | 325~5844 | 2708 | | 辉绿(玢)岩 | 53 | 0.46~72.12 | 7.37 | 90~28915 | 4148 | | 闪长(玢)岩 | 9 | 0.71~9.40 | 4.77 | 91~784 | 445 | | 凝灰粉砂岩夹凝灰熔岩 | 2 | 7.3~10.5 | 8.90 | 332~646 | 307 | | 熔结凝灰岩 | 8 | 5.00~10.70 | 7.09 | 190~1054 | 978 | 粗安 ![]() 玄武(凝灰)熔岩 | 7 | 4.60~9.30 | 6.96 | 126~544 | 377 | 石英 ![]() 孔雀石脉 | 1 | | 3.50 | | 1992 | | 凝灰岩 | 17 | 0.14~5.64 | 4.31 | 138~10120 | 1396 | | 晶屑岩屑凝灰岩 | 11 | 0.65~12.58 | 4.87 | 200~7782 | 2385 | | 凝灰角砾岩 | 16 | 3.80~10.50 | 6.86 | 72~1990 | 551 |
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Statistical table of electric parameters of rocks (mines)
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| ZK2002 | | ZK2004 | | U/I | ηs/% | 检查工作量/% | U/I | ηs/% | 检查工作量/% | | 单道接收机 | 1.3% | 2.4 | 32 | | 1.6% | 2.1 | 15.6 | | 新型仪器 | 0.4% | 1.4 | 0.4% | 1.3 |
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Error comparison of repetitive observation of instruments
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Apparent resistivity and apparent polarizability curves of induced polarization method in borehole ZK2002
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Results of ZK2002-ZK2004 borehole-borehole varient and electromagnetic wave CT
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Primary field potential isogram of charging method in well ZK2002
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Isogram of primary field polarity of charging method in well ZK2002
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Primary field potential difference profiles of IP method in borehole ZK2002
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Contours of primary field potential difference of IP Method in borehole ZK2002
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