摘要
以双异性点电流源电流场二维地电断面为例，着重讨论了电阻率展析成像反演中有限单元法数值模拟边界条件的选择、网格剖分以及模拟精度等问题，同时也讨论了成像反演中最优化及演方法及拟合参数的评价等。文中提出的新的网格剖分方法和选择的边界条件可有效地提高计算速度和数值模拟的精度。
Taken two-dimensional geoelectric section in double opposite current field of point current source for example,the authors discuss that the numerical simulation of finite element,selection of marginal conditions,network dismemberment and simulation precision in resistivity tomographic imaging inversion.The optimal inversional method and the evaluation for fitting parameters are discussed at the same time.Third scheme,a new method of network dismemberment and marginal conditions raised by authors can efficiently increase the calculation velocity and precision of numerical simulation.
出处
《江苏地质》
1996年第3期181-184,共4页
Jiangsu Geology
关键词
电阻率法
层析成像
反演问题
数值模拟
江苏
Resistivity method Tomographic imaging Inversion Numerical simulation Jiangsu
