钢结构隧道中的 TEM 响应反演及其应用

IF 2.2 4区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS
Minerals Pub Date : 2024-08-07 DOI:10.3390/min14080802
Shang Ran, Jinsong Shen, Zuzhi Hu, Gang Long
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引用次数: 0

摘要

隧道中的钢结构会严重影响瞬态电磁(TEM)数据反演的准确性。本研究提出并比较了两种有效缓解这种干扰的方法:修正系数法和先验信息约束法。校正因子法利用两种方法获得的干扰数据构建校正因子。第一种方法是数值模拟,理论上很精确,但严重依赖精确的模型参数,需要大量的计算资源。第二种方法是在工作空间测量干扰数据。虽然这种方法简单、操作方便,但其修正效果受到测量数据质量的限制。先验信息约束法通过引入更精确的初始模型来改进反演。合成数据的反演结果表明,基于校正因子法和先验信息约束法的反演可以有效地反演异常。然而,延迟效应仍然是校正因子法面临的一个挑战。最后,我们结合干扰处理方法对在矿井巷道中测量的实地数据进行了反演。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Inversion of TEM Responses in Tunnel with Steel Infrastructure and Its Application
Steel infrastructure in tunnels significantly affects the accuracy of transient electromagnetic (TEM) data inversion. This study proposes and compares two methods to effectively mitigate this interference: the correction factor method and the prior information constraint method. The correction factor method constructs correction factors using interference data obtained in two ways. The first method, numerical simulation, is theoretically precise but relies heavily on accurate model parameters and requires significant computational resources. The second is conducted by measuring the interference data in the working space. While this approach is simple and operationally convenient, its effectiveness in correction is limited by the measured data quality. The a priori information constraint method improves the inversion by introducing a more accurate initial model. The inversion results of synthetic data indicate that the inversion based on the correction factor method and the prior information constraint method can effectively invert the anomaly. However, the delay effect remains a challenge for the correction factor method. Finally, we invert the field data measured in a mine tunnel by combining the interference processing methods.
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来源期刊
Minerals
Minerals MINERALOGY-MINING & MINERAL PROCESSING
CiteScore
4.10
自引率
20.00%
发文量
1351
审稿时长
19.04 days
期刊介绍: Minerals (ISSN 2075-163X) is an international open access journal that covers the broad field of mineralogy, economic mineral resources, mineral exploration, innovative mining techniques and advances in mineral processing. It publishes reviews, regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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