音频大地电磁法在重庆璧山地热勘查中的应用
Application of Audio-frequency Magnetotelluric Method in Geothermal Exploration in Chongqing
王平 1黄兆辉 2赵运新 1杨洪海 1竺林 1罗军1
作者信息
- 1. 重庆一三六地质队,重庆 401147
- 2. 重庆科技大学 石油与天然气工程学院,重庆 401331
- 折叠
摘要
音频大地电磁法具有设备轻便、勘探深度大、地形适应能力强的特点,适用于山区地热勘查.重庆璧山凤湖仙山地热资源位于沥鼻峡背斜构造东翼,受背斜构造、岩性及地形地貌所控制.基于此,对研究区开展音频大地电磁法勘探,利用电阻率反演剖面图解释对应地层和隐伏断层构造.解释结论与该区的钻孔资料吻合度高,表明音频大地电磁法对于山区碳酸盐岩水热型地热勘探效果明显.
Abstract
The audio-frequency magnetotelluric method has the characteristics of lightweight equipment,large exploration depth,and strong terrain adaptability,and is suitable for geothermal exploration in mountainous areas.The geothermal resources of Fenghu Xianshan in Bishan,Chongqing are located on the eastern wing of the Libixia anticline structure and are controlled by the anticline structure,lithology,and topography.Based on this,audio-frequency magnetotelluric method was carried out in the research area,and the corresponding strata and hidden fault structures were explained using resistivity inversion profiles.The interpretation conclusion is highly consistent with the drilling data in the area,indicating that the audio-frequency magnetotelluric method has a significant effect on geothermal exploration of carbonate rocks in mountainous areas.
关键词
音频大地电磁法/地热勘查/沥鼻峡背斜/隐伏断层Key words
audio-frequency magnetotelluric method/geothermal exploration/libixia anticline/hidden faults引用本文复制引用
基金项目
重庆市规划与自然资源局科研项目(KJ-2023013)
出版年
2024
NETL
NSTL
万方数据