吉林大学学报(地球科学版) ›› 2020, Vol. 50 ›› Issue (4): 1211-1218.doi: 10.13278/j.cnki.jjuese.20190102

• 地球探测与信息技术 • 上一篇    

低温超导瞬变电磁法在内蒙古四子王旗地质勘探中的应用

包苏新1,2,3, 董丙元1,2,3, 裴易峰1,2, 荣亮亮1,2, 邱隆清1,2, 杜尚宇4   

  1. 1. 中国科学院上海微系统与信息技术研究所信息功能材料国家重点实验室, 上海 200050;
    2. 中国科学院超导电子学卓越创新中心, 上海 200050;
    3. 中国科学院大学, 北京 100049;
    4. 吉林大学仪器科学与电气工程学院, 长春 130026
  • 收稿日期:2019-04-30 发布日期:2020-07-29
  • 通讯作者: 裴易峰(1989-),助理研究员,硕士,主要从事超导在地球物理领域应用方面的研究,E-mail:peiyifeng@mail.sim.ac.cn E-mail:peiyifeng@mail.sim.ac.cn
  • 作者简介:包苏新(1995-),硕士研究生,主要从事超导应用方面的研究,E-mail:bsx@mail.sim.ac.cn
  • 基金资助:
    国家自然科学基金项目（61873256）

Application of Low Temperature TEM to Geological Exploration in Siziwangqi, Inner Mongolia

Bao Suxin1,2,3, Dong Bingyuan1,2,3, Pei Yifeng1,2, Rong Liangliang1,2, Qiu Longqing1,2, Du Shangyu4   

  1. 1. State Key Laboratory of Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
    2. Center of Excellence in Superconducting Electronics, Chinses Academy of Sciences, Shanghai 200050, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130026, China
  • Received:2019-04-30 Published:2020-07-29
  • Supported by:
    Supported by National Natural Science Foundation of China (61873256)

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摘要： 瞬变电磁法（transient electromagnetic method，TEM）是金属矿探查的有效手段。超导瞬变电磁法采用高灵敏度低温超导量子干涉器件（superconducting quantum interference device，SQUID）直接接收瞬变电磁二次场，具有本征噪声低（5~7 fT/√Hz）和带宽大（>200 kHz）等特点，勘探浅层分辨率高、探测深度大，优势明显。本文将SQUID系统与商用EM67系统进行了异常环对比实验，验证了以SQUID代替感应线圈作为接收装置的优势与实用性；将该方法应用于内蒙古四子王旗大井坡北部区域的电磁勘探工作，获取了高质量探测数据，反演结果显示浅层和中深层（> 2 000 m）为连续性低阻层；在已有地质资料和物探资料的基础上，结合反演结果可知，测线附近浅层500 m存在北东向断裂带，并推断深部2 000 m处分布着同向断裂带。

关键词: 瞬变电磁法, 超导量子干涉器件, 四子王旗, 断裂带

Abstract: Transient electromagnetic method (TEM) is widely used in metal mine exploration. Based on the new receiving technology of SQUID (superconducting quantum interference device), the TEM has the advantages of low intrinsic noise (5~7 fT/√Hz) and large bandwidth (>200 kHz). As an important mineral reserve, Siziwangqi in Inner Mongolia is rich in mineral resources. The reliability of SQUID instead of induction coil was verified by comparing the experimental results of the anomalous rings obtained by superconducting receiving system and EM67 TEM instrument. The superconducting TEM method was applied to the northern area of Dajingpo, Siziwangqi, Inner Mongolia. The underground anomalous response information in shallow and deep layers (>2 000 m) was obtained to deduce a continuous low resistivity layer. Combined with the existing geological and geophysical data, the inversion results effectively reveal a north-east trending fault zone at 500 m in the shallow layer near the survey line, and then infer that there is a similar trending fault zone at 2 000 m in the deep layer.

Key words: transient electromagnetic method, superconducting quantum interference device, Siziwangqi, fault zone

中图分类号: 

  • P631
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