摘要
采用音频大地电磁测量(AMT)在金属矿区内部进行断裂构造测量,运用一维bostick反演进行数据处理.断裂在反演电阻率断面图中表现为高角度舌状低阻体,低阻体宽度大于实际断裂宽度.硅化破碎带属于多期次构造活动的产物,与其它特殊矿层相比,仍表现为破碎特征,在反演电阻率断面图中表现为舌状、囊状低阻体.本次研究的金属矿区一般地形较复杂,施工难度大,采用AMT法可以快速了解这些地区的断裂发育情况,为后期工程部署提供依据.
Audio magnetotelluric survey(AMT)is used to measure the fracture structure in the interior of the metal mining area,and one-dimensional Bostick inversion is used to process the data.In the inverted resistivity section,the fracture shows a high angle tongue-shaped low resistivity body,and the width of the low resistivity body is larger than the actual fracture width.The silicified fractured zone is the product of multi-stage tectonic activities.Compared with other special ore beds,it is still characterized by fragmentation.In the inverted resistivity section,it is characterized by tongue-shaped and cystic low resistivity bodies.The general topography of the metal mining area studied in this paper is complex and difficult to construct.AMT method can be used to quickly understand the fracture development in these areas and provide a basis for the later project deployment.
作者
焦智伟
朱佳宁
JIAO Zhi-wei;ZHU Jia-ning(Airborne Survey and Remote Sensing Center of Unclear Industry,Shijiazhuang 050002,China;Key Laboratory for Geophysical Exploration Technology Center of Uranium Resource,Shijiazhuang 050002,China))
出处
《世界有色金属》
2019年第12期20-21,共2页
World Nonferrous Metals
关键词
音频大地电磁测量
金属矿区
断裂
舌状低阻体
Audio Magnetotelluric Survey
Metal Mining Area
Fracture
Tongue Low Resistance Body
