| 电震联合法在涪陵裂隙溶洞调查中的应用研究 |
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| 引用本文： | 郭淑君,朱继良,王春辉,任政委,明圆圆,李梦.电震联合法在涪陵裂隙溶洞调查中的应用研究[J].CT理论与应用研究,2021,30(1):49-59. |
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| 作者姓名： | 郭淑君 朱继良 王春辉 任政委 明圆圆 李梦 |
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| 作者单位： | 国地质调查局水文地质环境地质调查中心, 河北 保定 071051 |
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| 摘 要： | 涪陵页岩气勘查开发区内地层以碳酸盐岩为主，地下存在裂隙、溶洞、暗河等是该区要识别、防范的重要地质隐患。本文分析了音频大地电磁法（AMT）探测和浅层纵波反射地震勘探法的特点，明确了不同方法对裂隙溶洞调查的优缺点，认为电震联合裂隙溶洞调查的方法是获得区内异常构造与电阻率、波阻抗对应关系的有效途径。通过两个应用实例，解析区内地下500 m深的地层、地质构造和裂隙溶洞水的赋存规律，勘探结果可靠，展示综合物探对碳酸盐岩岩溶地层的研究能力，推进西南岩溶缺水区物探找水技术的发展，使基础地质调查广泛应用于涪陵页岩气勘查开发及远景规划，社会效益显著。
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| 关 键 词： | 页岩气 碳酸盐岩 裂隙 溶洞 电阻率 |
| 收稿时间： | 2020-08-12 |
Study on the Joint Application of Electrical and Seismic Exploration in the Investigation of Fissure and Karst Cave in Fuling Area |
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| GUO Shujun,ZHU Jiliang,WANG Chunhui,REN Zhengwei,MING Yuanyuan,LI Meng.Study on the Joint Application of Electrical and Seismic Exploration in the Investigation of Fissure and Karst Cave in Fuling Area[J].Computerized Tomography Theory and Applications,2021,30(1):49-59. |
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| Authors: | GUO Shujun ZHU Jiliang WANG Chunhui REN Zhengwei MING Yuanyuan LI Meng |
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| Affiliation: | Center for Hydrogeology and Environmental Geology Survey, CGS, Baoding 071051, China |
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| Abstract: | Carbonate rock is the main stratum in Fuling Area shale gas exploration and development area, and the underground fissures, karst caves and underground rivers are the important geological hidden dangers to be identified and prevented. In this paper, the characteristics of audio frequency magnetotelluric method(AMT) and shallow p-wave reflection seismic method are analyzed, it is considered that the method of electric shock combined with Fissure Cave survey is an effective way to obtain the corresponding relation between abnormal structure and resistivity and wave impedance. Through two application examples, this paper analyzes the occurrence law of strata, geological structure and fissure karst water in 500 m depth underground, the exploration result is reliable, and shows the research ability of integrated geophysical exploration on carbonate karst strata, it has promoted the development of geophysical prospecting for water in Karst water-scarce areas in southwest China, and made the basic geological survey widely used in shale gas exploration and development and long-term planning in Fuling Area. |
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