基于大地电磁测深的沉积区隐伏断层探测研究  

Detection of buried faults in sedimentary area based on magnetotelluric sounding

作　　者：王志耕[1] WANG Zhigeng(Chongqing Survey Institute,Chongqing,401121,China)

机构地区：[1]重庆市勘测院,重庆401121

出　　处：《测绘技术装备》2022年第1期22-27,共6页Geomatics Technology and Equipment

摘　　要：为解决传统沉积区隐伏断层探测速度慢的问题,实现沉积区隐伏断层的准确快速探测,本文以沉积区的基本构造方式和隐伏断层的形成方式为基础,利用大地电磁测深技术构建沉积区隐伏断层模型,采集沉积区隐伏断层数据,分析沉积区隐伏断层带电性结构特征,并按照其内部结构实现探测结果的可视化输出和对沉积区隐伏断层探测方法的优化设计。将设计的优化探测方法应用到实际工作试验区中,准确探测出研究区域中20号测线位置为沉积区隐伏断层位置。与传统探测方法进行对比试验,结果显示,使用设计探测方法能够节省约36 s的时间,有效提升了探测速度。In order to solve the problem of slow detection speed of buried faults in the traditional sedimentary area and realize the accurate and rapid detection of buried faults in the sedimentary area,based on the basic structural mode of the sedimentary area and the formation mode of buried faults,this paper constructs the buried fault model of the sedimentary area by using magnetotelluric sounding technology and collects the data of buried faults in the sedimentary area,analyzes the structural characteristics of buried fault electrification in sedimentary area.The visualization output of detection results is realized according to its internal structure,and the optimal design of buried fault detection method in sedimentary area is realized.The optimized detection method is applied to the actual working test area,and the position of survey line 20 in the study area is accurately detected as the location of buried fault in the sedimentary area.Compared with the traditional detection methods,the experimental results show that the designed detection method can save about 36 seconds and effectively accelerate the detection speed.

关 键 词：大地电磁测深 沉积区 隐伏断层 探测方法 

分 类 号：P631[天文地球—地质矿产勘探]