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多种物探方法在西林金成矿带深部探测效果分析
- 宋林君|唐德龙|丁正江|尹召凯|张亮亮|李瑞波
- 作者单位：
- 山东省地质矿产勘查开发局第六地质大队&自然资源部深部金矿勘查开采技术创新中心&山东省深部金矿探测大数据应用开发工程实验室|山东省地质矿产勘查开发局第六地质大队&自然资源部深部金矿勘查开采技术创新中心&山东省深部金矿探测大数据应用开发工程实验室|山东省地质矿产勘查开发局第六地质大队&自然资源部深部金矿勘查开采技术创新中心&山东省深部金矿探测大数据应用开发工程实验室|山东省地质矿产勘查开发局第六地质大队&自然资源部深部金矿勘查开采技术创新中心&山东省深部金矿探测大数据应用开发工程实验室|山东省地质矿产勘查开发局第六地质大队&自然资源部深部金矿勘查开采技术创新中心&山东省深部金矿探测大数据应用开发工程实验室|山东省地质矿产勘查开发局第六地质大队&自然资源部深部金矿勘查开采技术创新中心&山东省深部金矿探测大数据应用开发工程实验室
基金项目：
- 山东省财政地质勘查项目（鲁勘字〔2021〕29号）；山东省地矿局地质勘查与科技创新项目（KY202105）；山东省地矿局科技攻关项目（KY202208，KY201916）；广东省科技计划项目（2020B1212060055）
详细信息：
- 作者简介：
- 宋林君(1989—)，男，工程师，硕士，从事固体矿产地球物理勘查工作；E-mail：734012714@qq.com
- 通讯作者：
- 唐德龙(1988—)，男，工程师，从事固体矿产地球物理勘查工作；E-mail：455900288@qq.com
- PDF下载
Analysis of the effectiveness of multiple geophysical methods in the deep exploration of the Xilin gold metallogenic belt
- English Author：
- No.6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources&MNR Technology Innovation Center for Deep Gold Resources Exploration and Mining&Shandong Provincial Engineering Laboratory of Application and Development of Big Data for Deep Gold Exploration|No.6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources&MNR Technology Innovation Center for Deep Gold Resources Exploration and Mining&Shandong Provincial Engineering Laboratory of Application and Development of Big Data for Deep Gold Exploration|No.6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources&MNR Technology Innovation Center for Deep Gold Resources Exploration and Mining&Shandong Provincial Engineering Laboratory of Application and Development of Big Data for Deep Gold Exploration|No.6 Geological Team of Shandong Provincial Bureau of Geology and Mineral Resources&MNR Technology Innovation Center for Deep Gold Resources Exploration and Mining&Shandong
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
为了筛选出适用于胶东金矿集中区深部探测的地球物理方法，同时也为查明西林金成矿带深部构造位置、产状及与地质体的关系，总结地球物理找矿标志，构建深部地质地球物理找矿模型，在西林金成矿带开展了AMT、CSAMT和WFEM 3种典型电磁法试验。采用理论分析、实测对比和钻孔验证的方式，重点围绕抗干扰性、探测深度、分辨率及准确度4方面对比分析这3种电磁法的探测效果。试验结果表明，WFEM在抗干扰性、探测深度、分辨率和准确度上均优于其他2种方法，能准确限定测线经过区地质体产出规模、深度，能有效约束西林断裂带发育位置、深部变化及与岩体关系。
关键词:
广域电磁法；可控源音频大地电磁法；音频大地电磁法；对比分析；深部探测；西林断裂带
Abstract:
In order to select suitable geophysical methods for deep exploration in the Jiaodong gold concentration area,and to determine the deep structural position,occurrence,and relationship with geological bodies of the Xilin gold metallogenic belt,this study summarized the geophysical exploration indicators and constructed a deep geological-geophysical exploration model.3 typical electromagnetic methods,including AMT,CSAMT,and WFEM,were conducted in the Xilin gold metallogenic belt.The detection results of the 3 electromagnetic methods were compared and analyzed in terms of anti-interference ability,detection depth,resolution,and accuracy through theoretical analysis,field measurements,and drilling verification.The experimental results showed that WFEM outperformed the other two methods in terms of anti-interference ability,detection depth,resolution,and accuracy.It can accurately determine the scale and depth of geological bodies along the measured lines,effectively constrain the development position and deep changes of the Xilin fault zone,as well as its relationship with the rock mass.
Keywords:
wide-field electromagnetic method;controlled-source audio MT;audio-frequency MT;comparative analysis;deep exploration;Xilin fault zone