| 地热资源电磁法勘探现状及展望 |
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| 引用本文：吴佳文,胡祥云,黄国疏,彭荣华,周文龙.2023.地热资源电磁法勘探现状及展望[J].地球学报,44(1):191-199. |
| DOI：10.3975/cagsb.2022.120501 |
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| 基金项目:中国地质调查局地质调查项目“全国大地热流值测量与靶区优选”(编号: DD20190128) |
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| 中文摘要:地热资源作为一种储量丰富、无污染、持续稳定的可再生能源, 正受到国际社会的普遍关注。电阻率与地热环境中的孔隙度、渗透率、含盐度、蚀变及温度等关键参数紧密相关, 是表征地热属性最为灵敏的参数。作为获得地下电性结构的一种重要地球物理勘探方法, 电磁勘探方法具有探测范围广、深度大、精度高且经济高效等特点, 被广泛应用于地热资源勘探。本文主要对电磁探测在地热资源的应用与发展现状、地热电磁成像及地热要素电性特征等方面进行综合论述。然后, 根据电磁勘探在地热区的应用实例, 总结了电磁法在地热勘探中的适应性、有效性及准确性。最后, 对地热资源混场源超宽频电磁数据采集、高精度反演成像及关键地热属性识别等前沿科学问题与方法技术进行了展望。 |
| 中文关键词:地热资源 电磁法 电阻率 |
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| Status and Prospects of Electromagnetic Method Used in Geothermal Resources Exploration |
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| Abstract:As a clean, sustainable, and renewable energy resource, geothermal energy has attracted considerable attention worldwide. A strong correlation exists between resistivity and geothermal-related parameters, including porosity, permeability, salinity, alteration and temperature. Electromagnetic methods have been widely used in geothermal exploration to effectively determine subsurface electrical structures, and are characterized by a wide detection range, high accuracy, low cost, and can reach large depths. This study mainly discusses the application and development of electromagnetic exploration in geothermal resources, geothermal electromagnetic tomography, and the electrical characteristics of geothermal elements. The applicability, effectiveness, and accuracy of electromagnetic methods in geothermal exploration are summarized based on examples of electromagnetic exploration in geothermal areas. Finally, the prospects of frontier methods and technologies in geothermal exploration and exploitation such as hybrid source ultra-wide electromagnetic data acquisition, high-precision inversion imaging, and major geothermal attributes identification are described. |
| keywords:geothermal resources electromagnetic method resistivity |
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