地质科技通报2025，Vol.44Issue(4)：368-378,11.DOI:10.19509/j.cnki.dzkq.tb20250048
MT与WFEM二维联合反演在山西大同地热区的应用
Application of MT and WFEM two-dimensional joint inversion in Datong geothermal area,Shanxi Province
摘要
Abstract
[Objective]Geothermal energy,owing to its stability and economic advantages,has become a crucial direction in the construction of new clean energy systems.[Methods]Electromagnetic methods are core geophysical techniques for resolving the electrical structure of geothermal systems and exhibit distinct complementary features.The magnetotelluric(MT)method uses natural alternating electromagnetic fields with the advantages of high detection depth and sensitivity to deep low resistance bodies,but it is susceptible to the influence of electromagnetic environmental noise.Wide-field electromagnetic method(WFEM)utilizes artificial field sources,exhibiting strong anti-interference capabilities and showing higher resolution for shallow anomalous bodies and small fractures.This study explores the complementarity and effectiveness of MT and WFEM in geothermal exploration through a two-dimensional joint inversion method.[Results]Theoretical models and synthetic data tests have shown that two-dimensional joint inversion combines the respective advantages of MT and WFEM,and can more clearly characterize the cap rock and thermal reservoir structure of geothermal systems.This paper conducted a joint inversion study on the measured data of MT and WFEM in a geothermal area in Datong,Shanxi,China.The results showed that the resistivity distribution obtained from the joint inversion clearly characterized shallow fault channels and deep thermal reservoirs.[Conclusion]Based on the resistivity structure model obtained from joint inversion and other geological data,a conceptual model of the geothermal system in the region was constructued,providing a reference basis for the precise exploration of geothermal resources in the future.关键词
地热勘探/地热系统/大地电磁法/广域电磁法/二维联合反演/山西大同Key words
geothermal exploration/geothermal system/magnetotellurics(MT)/wide-field electromagnetic method(WFEM)/two-dimensional joint inversion/Datong,Shanxi Province分类
天文与地球科学引用本文复制引用
谢子豪,陈宇峰,刘磊,周文龙,廖卫阳,杨鑫..MT与WFEM二维联合反演在山西大同地热区的应用[J].地质科技通报,2025,44(4):368-378,11.基金项目
湖北省地质局地质科研项目"地下空间地质结构与资源探测技术应用研究"(KJ2023-37) （KJ2023-37）
资源与生态环境地质湖北省重点实验室开放基金资助项目(HBREGKFJJ-202310) （HBREGKFJJ-202310）
