世界核地质科学2025，Vol.42Issue(4)：809-815,7.DOI:10.3969/j.issn.1672-0636.2025.04.011
基于线框参数优化的金属干扰环境下矿井瞬变电磁探测技术研究
Study on loop parameter optimization of transient electromagnetic method for mine exploration under metallic interference
苏彦龙1
作者信息
- 1. 河南省地球物理空间信息研究院有限公司,河南 郑州 450009||河南省地质物探工程技术研究中心,河南 郑州 450009||河南省地下工程探测信息工程技术研究中心,河南 郑州 450009
- 折叠
摘要
Abstract
During the construction of underground roadways containing large metal structures,the detection effectiveness of the transient electromagnetic method is often compromised by the interference from metallic bodies.To identify deep-seated abnormal geological bodies behind metal interference sources,this study investigated the suppression effects of different loop configuration parameters in MTEM by metallic interference bodies and the corresponding detection blind zone range,and further explored the influence distance of metallic interference bodies.It was found that increasing the loop side length or the number of transmitter coil turns can effectively suppress interference and enhance the resolution of deep geological bodies.However,a larger loop side length results in a larger detection blind zone.The response intensity of metallic interference decreases as the distance between the loop and the metallic body increases,and the interference becomes negligible once the distance exceeds a certain threshold.Conclusion:Therefore,when large metallic structures exist near the detection area,multiple tests can be conducted to determine the maximum influence distance of metallic interference.By relocating the loop to the interval between the maximum influence distance and the blind zone depth,false anomalies caused by metallic interference can be confined within the blind zone,enabling the detection of deep target geological bodies behind the metallic structures.关键词
矿井瞬时电磁法/金属干扰/盲区Key words
mine transient electromagnetic method/metal interference/blind zone分类
天文与地球科学引用本文复制引用
苏彦龙..基于线框参数优化的金属干扰环境下矿井瞬变电磁探测技术研究[J].世界核地质科学,2025,42(4):809-815,7.
