摘要
本研究聚焦山西省五台县,以助力当地地热开发为目标,开展地热资源勘查工作。全方位收集区域地质资料,采用音频大地电磁法(AMT),借助Stratagem EH5连续电导率成像仪,依据地质背景和研究目的精心规划测线。以200m点距线性布置测点,在1Hz-100kHz频率范围采集数据。对采集数据依次进行解编、去噪、静态校正等处理,结合地质背景深入分析,开展地质解释工作。通过上述研究,成功识别出寒武系、奥陶系、太古界等地层分布,确定了F1、F2等断层构造。研究表明,音频大地电磁法在五台县地热资源勘查中成果显著,探测结果与地质调查资料高度契合,证实该方法具有可靠性,为五台县地热资源开发、地质研究及相关工作提供了关键科学依据,对地热资源的后续开发利用意义重大。
This research takes Wutai County in Shanxi Province as the core area and aims to assist local geothermal development.A comprehensive and in-depth geothermal resource exploration work has been carried out in an orderly manner.In terms of exploration technical means,the Audio-Magnetotelluric(AMT)method was selected,and relying on the advanced Stratagem EH5 continuous conductivity imager,a solid foundation was laid for obtaining high-precision data.In the data collection stage,adhering to the principle of comprehensiveness,a comprehensive collection of regional geological data was carried out.Meanwhile,closely combining the local geological background and the specific purpose of this research,the survey lines were carefully planned.The measuring points were linearly arranged at a point distance of 200m.This scientific arrangement can ensure the comprehensiveness and representativeness of data collection.The data collection frequency range was set at 1-100kHz.Within this range,the instrument accurately collected a large amount of raw data.After the collection was completed,the data processing stage was immediately entered.First,the collected data were sequentially decoded to convert the complex raw data into a format convenient for analysis.Then,professional denoising algorithms were used to remove various interference noises in the data to improve the signal-to-noise ratio of the data.Subsequently,static correction work was carried out to eliminate the static effect deviation caused by factors such as terrain.After this series of rigorous data processing procedures,combined with profound geological background knowledge and professional geophysical knowledge,an in-depth and detailed analysis of the processed data was carried out,and geological interpretation work was carried out simultaneously.Through the above arduous and meticulous research work,the accurate distribution of strata such as the Cambrian,Ordovician,and Archean was successfully identified,and fault structures such as F1 and F2 were accurately determined.The research results show that the Audio-Magnetotelluric method has achieved remarkable results in the geothermal resource exploration in Wutai County.By comparing the detection results with the existing geological survey data,it was found that the two are highly consistent,which fully confirms the reliability of this method in the geothermal exploration in Wutai County.The research results of this time provide extremely crucial scientific basis for the geothermal resource development,geological research and related work in Wutai County,and are of immeasurable significance for the subsequent development and utilization of geothermal resources.
作者
刘庆
王康
孙彦海
陈海江
石致君
马维龙
LIU Qing;WANG Kang;SUN Yanhai;CHEN Haijiang;SHI Zhijun;MA Weilong(Harbin Center for Integrated Natural Resources Survey,China Geological Survey,Harbin 150086,China;Northeast Geological S&T Innovation Center of China Geological Survey,Shenyang 110034,China;Observation and Research Station of Earth Critical Zone in Black Soil,Harbin,Ministry of Natural Resources,Harbin 150086,China)
出处
《黑龙江国土资源》
2025年第9期100-107,共8页
Heilongjiang land and Resources
基金
中国地质调查局东北地质科技创新中心区创基金项目(QCJJ2022-3)。
关键词
音频大地电磁法
地热资源勘查
数据处理
地质解释
山西省五台县
audio magnetotelluric method
Wutai County
Shanxi Province
geothermal resource exploration
data processing
geological interpretation
