| 薛国强.大回线源瞬变电磁技术在西藏山南地区探矿中的应用[J].地质与勘探,2011,47(1):100-106 |
| 大回线源瞬变电磁技术在西藏山南地区探矿中的应用 |
| Application of Large-Loop TEM Technology to Mineral Exploration in the Shannan Area, Tibet |
| 投稿时间：2010-10-19 修订日期：2010-11-28 |
| DOI： |
| 中文关键词: 大回线源瞬变电磁非中心点场中心点场响应山南地区探测 |
| 英文关键词: TEM, response of central-point with none-zero-offset point fields, Shannan area, exploration |
| 基金项目:本文受中国冶金地质总局“冈底斯东段南部矽卡岩-斑岩Cu-Au-Mo 矿床成矿模式及成矿条件综合研究冶、十一五科技支撑计
划冈底斯成矿课题(2006BA01A04)、中国科学院知识创新工程重要方向项目(KZCX2-YW-Q04-07),国家自然科学基金面上
项目(40774066)和国家自然科学基金重点项目(50539080)联合资助。 |
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| 中文摘要: |
| [摘要]对大回线源瞬变电磁非中心点场和中心点场响应进行对比讨论,认为核函数具有相似的
函数形态和函数性质,因此对于非中心点各分量也可以表示成与中心点垂直分量类似的多项式形式,采
用待定系数法,完成视电阻率定义,通过模型检验认为方法可行,结果可靠。使用这一技术对西藏山南
地区的帕南、努日等两个矿区进行探测,解释结果与钻探验证一致,取得了较好的效果,研究成果对于大
回线瞬变电磁法的进一步发展应用具有重要的指导意义。 |
| 英文摘要: |
| Abstract:Comparison of responses of central-point and none-zero-offset point fields suggests that there exists similarity between the kernel functions of the
both fields,thus the formula of none-zero offset point response can be expressed by the form of polynomial as that of the central point component. So we define ap鄄
parent resistivity formula by using the undetermined coefficient method. The model test shows that this method is feasible and the result is reliable. This technique
has been applied to exploration in the two ore deposits, Panan and Nuri of the Shannan area, southern Tibet. The interpretation agrees with drilling records, in鄄
dicative of a fairly good achievement. The research result will be of importance for further development of the large-loop TEM technology and its application. |
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