摘要
在5个波数的有限元点源二维直流电测深总电位法模拟的基础上,提出一种简单的对视电阻率结果进行修正的方法。利用均匀大地的理论值和有限元模拟值的比值作为修正系数,以此来消除总电位法中电源点的影响,并且提高了在有限个波数的情况下大极距模拟的准确性。
Based on the two-dimensional total potential FEM(finite element method)simulation with 5 wave numbers of point source direct current exploration,a simple method to correct the apparent resistivities from FEM is put forward.Using the ratio between theoretic uniform earth apparent resistivities and FEM values as correct coefficients,the impact of power piont in the total potential method is eliminated,thus the precision of FEM values is improved in the case of limited wave numbers and large electrodes distance.
出处
《桂林理工大学学报》
CAS
北大核心
2010年第4期518-521,共4页
Journal of Guilin University of Technology
基金
国家自然科学基金项目(40774057)
广西自然科学基金项目(桂科自0848021)
广西地质工程中心重点实验室开放基金项目(桂科能07109011-K003)
关键词
二维
直流电测深
有限元
修正系数
two-dimension
direct current sounding
finite element method(FEM)
correct coefficient