Application of audio magnetotellurics in the study of the subsurface water-bearing properties of the Santunhe area, Xinjiang
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摘要: 在能源、矿产等勘探领域中,因为音频大地电磁测深法(AMT)具备勘探效率高、垂向分层能力强等优点,从而得到大范围的应用。本文采用基于数据空间的三维反演算法,对新疆三屯河地区地热勘查采集的音频大地电磁数据进行了三维反演。反演结果表明,三维反演在该地区避免了测线上不均匀地质体的影响,取得了更为丰富和直观的三维地电异常。结合收集的研究区地质资料,利用AMT数据三维反演结果,对研究区地下电性特征及和热储有关的地层赋水性进行分析,并结合研究区地热成藏规律推断了几处地热成藏的有利区。Abstract: Audio magnetotellurics (AMT) is widely used for energy and mineral explorations because of its high exploration efficiency and high vertical resolution. Using a three-dimensional (3D) inversion algorithm based on data space, this study performed 3D inversion of the AMT data collected from geothermal exploration in the Santunhe area of Xinjiang. As indicated by the inversion results, the 3D inversion avoids the influence of inhomogeneous geobodies on the survey lines in the study area and yielded very rich and intuitive 3D geoelectric anomalies. In combination with the geological data and the 3D inversion results, this study analyzed the subsurface electrical properties of the study area and the formation water-bearing properties related to geothermal reservoirs, and finally inferred several favorable areas for geothermal reservoirs from the geothermal accumulation patterns of the study area.
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Key words:
- Santunhe /
- AMT /
- water-bearing strata /
- geothermal
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