AMT方法在鳌山卫花岗岩地区深部地热构造勘探中的应用

doi:10.6038/pg2019CC0083

地球物理学进展 ›› 2019, Vol. 34 ›› Issue (5): 1945-1953.doi: 10.6038/pg2019CC0083

• 应用地球物理学Ⅰ（油气及金属矿产地球物理勘探） • 上一篇下一篇

AMT方法在鳌山卫花岗岩地区深部地热构造勘探中的应用

严小丽^1,^2,³,康慧敏^1,^2,³,王光杰^1,^2,^3,^*(),何国丽^1,^2,³,李红领^1,^2,³

^1. 中国科学院地质与地球物理研究所,页岩气与地质工程重点实验室,北京 100029
^2. 中国科学院地球科学研究院,北京 100029
^3. 中国科学院大学,北京 100049

收稿日期:2018-11-23 修回日期:2019-06-15 出版日期:2019-10-28 发布日期:2019-10-28
通讯作者: 王光杰 E-mail:gjwang@mail.iggcas.ac.cn
作者简介:严小丽,女,1992年生,中国科学院地质与地球物理研究所在读硕士研究生,主要从事电磁法理论及应用研究.(E-mail: 1026889949@qq.com)
基金资助:
国家重点研发计划课题(2016YFC0600507);国家自然科学基金(41430319)

Application of AMT in deep geothermal structure exploration in Aoshanwei granite area of Qingdao

YAN Xiao-li^1,^2,³,KANG Hui-min^1,^2,³,WANG Guang-jie^1,^2,^3,^*(),HE Guo-li^1,^2,³,LI Hong-ling^1,^2,³

^1. Key Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
^2. Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
^3. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2018-11-23 Revised:2019-06-15 Online:2019-10-28 Published:2019-10-28
Contact: Guang-jie WANG E-mail:gjwang@mail.iggcas.ac.cn

摘要/Abstract

摘要：

作为我国最近规划的中国蓝谷海洋高科技开发区,对能源结构有着较高要求.目前,地热资源的直接利用是最经济最方便的绿色能源途径.鳌山卫研究区,是中国蓝谷的核心区之一,根据地质资料和温泉露头情况推测,该研究区内有可观的地热资源潜力.为探测鳌山卫花岗岩地区的深部地热构造,搜集已有的地质地球物理资料,在该区布设了10条AMT测线.通过资料采集、预处理、反演,得到了研究区地下2000 m以浅的电性结构的空间展布形态.勘探结果显示,研究区发育一条走向为N30°E的断裂构造F1,深度约1500 m;同时确定了构造低阻异常中心位置,为下一步钻孔布设提供依据.本次花岗岩区AMT探测,克服了城市人文干扰和高压输电线引起的各种电磁干扰,为类似地区深部地热构造探测工作提供了实践经验,是一次成功的深部地热构造探测.

关键词: 音频大地电磁法, 深部构造, 花岗岩地区, 地热

Abstract:

The research area is located the north of Qingdao of Shandong province and recently planned as the blue valley marine high-tech development zone. It has high requirements for the energy structure for the development in the future and the most economical and available green energy in this area is geothermal resources. The Aoshanwei area is one of the core areas of China’s Blue Valley. According to the outcroppings of thermal spring and geological data, the deep hot water in the granite can provide some amount of energy for the valley through theorical calculation.To prospect the deep geothermal structure in granite area in Aoshanwei Qingdao, ten AMT measuring lines was laid in this region, based on geological and geophysics data. After data gathering, pro-processing and inversing, we get the resistivity spatial distribution form about 2000 m depth in the region. The result suggests: there is a fault F1 with the N30°E strike, 1500 m depth, 300 m width. We confirm the center location of the low resistivity anomalously belt, which provides the evidence for logging. The Audio Frequency Magnetotellurics(AMT)exploration overcomes electromagnetic interference caused by human activities and high-voltage transmission lines, and provides good experience for deep geothermal structure prospecting in similar areas.

Key words: Audio Frequency Magnetotellurics(AMT), Deep structure, Granite area, Geothermal

中图分类号:

P631

严小丽, 康慧敏, 王光杰, 何国丽, 李红领. 2019. AMT方法在鳌山卫花岗岩地区深部地热构造勘探中的应用. 地球物理学进展, 34(5): 1945-1953. doi: 10.6038/pg2019CC0083.

YAN Xiao-li, KANG Hui-min, WANG Guang-jie, HE Guo-li, LI Hong-ling. 2019. Application of AMT in deep geothermal structure exploration in Aoshanwei granite area of Qingdao. Progress in Geophysics. 34(5): 1945-1953. doi: 10.6038/pg2019CC0083.

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AMT方法在鳌山卫花岗岩地区深部地热构造勘探中的应用

Application of AMT in deep geothermal structure exploration in Aoshanwei granite area of Qingdao

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