地—井瞬变电磁关键技术问题研究

doi:10.11720/wtyht.2019.1159

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摘要

地—井瞬变电磁法在加拿大、澳大利亚等国的勘查实践中已取得了很好的效果,国内由于缺乏从仪器设备到资料处理解释的整套技术,使得该方法未能被广泛应用。为此,研制了地—井瞬变电磁仪器,同时系统地研究了地—井三分量坐标系的确定、探头角度系统偏差的测定、三分量的校正运算、勘查目标体方位及距离的分析与计算等,并在实际的地—井瞬变电磁观测中获得了良好的应用效果。

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	杜庆丰
	冯晓兰
	黄跃

关键词 ：地—井瞬变电磁法;, 探头角度偏差测定, 三分量校正, 目标体定位

Abstract：

Surface-borehole TEM method has achieved good results in exploration in Canada and Australia. Due to the lack of complete technology from equipment to data processing and interpretation, the method has not been widely used in China. The authors developed the surface-borehole TEM instrument and, at the same time, systematically studied the determination of the three component coordinates of the surface-borehole TEM, the measurement of the deviation of the probe angle, the correction of the three components, and the analysis and calculation of the orientation and distance of the target body, which achieved good application results in actual measurement.

Key words： surface-borehole TEM measuring the deviation of the angle of the probe three component correction target body location

收稿日期: 2018-04-20 出版日期: 2019-02-20

P631

基金资助:国土资源公益性行业科研专项经费项目“深井地—井TEM系统实用化与推广应用”(201511031)

作者简介: 杜庆丰(1963-),男,教授级高级工程师,主要从事瞬变电磁法研究工作。Email: duqingfeng@igge.cn

引用本文:

杜庆丰, 冯晓兰, 黄跃. 地—井瞬变电磁关键技术问题研究[J]. 物探与化探, 2019, 43(1): 143-147.
Qing-Feng DU, Xiao-Lan FENG, Yue HUANG. Research on key technical problems of surface-borehole TEM. Geophysical and Geochemical Exploration, 2019, 43(1): 143-147.

链接本文:

https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2019.1159 或 https://www.wutanyuhuatan.com/CN/Y2019/V43/I1/143

Fig.1 三分量TEM整流器、发射机、接收机及探头

Fig.2 1 000 m、2 000 m塑胶电缆专用绞车

Fig.3 地—井TEM坐标系

Fig.4 定向器各角度示意

Fig.5 白石泉506钻孔x分量早、中、晚期感应电动势剖面

Fig.6 白石泉506钻孔y分量早、中、晚期感应电动势剖面

Fig.7 白石泉506钻孔z分量早、中、晚期感应电动势剖面

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[1]	易洪春. 地—井瞬变电磁响应特征研究[J]. 物探与化探, 2018, 42(5): 970-976.

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