基于南水北调西线工程岩性特征的CSAMT法有限元三维数值模拟研究  

Three dimensional controlled source electromagnetic numerical simulation based on the rock properties of the west line of South-to-North Water Diversion Project using Finite Element Method

作　　者：薛云峰[1] 张继锋[2] 

机构地区：[1]黄河勘测规划设计有限公司,郑州450003 [2]长安大学地质工程与测绘学院,西安710054

出　　处：《地球物理学报》2011年第8期2160-2168,共9页Chinese Journal of Geophysics

基　　金：国家十一五科技支撑计划(2006BAB04A06);陕西省自然科学基金(20100741);中国博士后基金(20100481309);中央高校基本科研费专项资金(CHD2010JC069)联合资助

摘　　要：有限元法是地球物理数值模拟中常用的方法,本文采用三维可控源音频大地电磁法(CSAMT)有限元数值模拟的程序,根据南水北调西线工程岩性的地球物理特征,设置了不同的三维模型,并对其进行了有限元数值计算分析,从三维空间中模拟场的规律,探索了不同地质异常体的特征,为提高可控源音频大地电磁法在南水北调西线工程深埋藏隧洞探测地质异常体的精度奠定了基础.Finite Element Method is commonly used in geophysical numerical simulation. According to rock geophysical characteristics of the west route of South-to-North Water Diversion project, different 3-D models were constructed and numerical calculation analysis was carried out with finite element method. The pattern of the field in three-dimensional space is simulated, the characteristics of different abnormal geologic bodies were probed. It has established a basis for improving CSAMT accuracy of surveying the abnormal geology body hidden in deeply buried tunnel in South-to-North water diversion west line project.

关 键 词：南水北调西线工程 可控源电磁法 有限元单元法 数值模拟 

分 类 号：P631[天文地球—地质矿产勘探]