CAJ | 학술논문

为使复电阻率探测方法在铬渣污染场地探测领域取得应用,需要建立土壤的复电阻率模型,包括模型选择及参数反演. 矩阵实验室(Matrix Laboratory,Matlab)的优化工具箱提供了基于置信域方法的最小二乘曲线拟合求解算法,为优化方法在工程中的实际应用提供了更方便、更快捷的途径. 在大量土壤样品复电阻率实测数据基础上,采用置信域方法并结合各模型的参数约束,反演了Cole-Cole模型的参数. 结果表明:基于置信域方法的最小二乘曲线拟合求解算法可以准确求取复电阻率模型参数,但前提是必须提供较精确的初始值;与使用复电阻率幅值和相位的联合反演相比,单独考虑幅值或者相位的反演也能够取得相近的效果.
위사복전조솔탐측방법재락사오염장지탐측영역취득응용,수요건립토양적복전조솔모형,포괄모형선택급삼수반연. 구진실험실(Matrix Laboratory,Matlab)적우화공구상제공료기우치신역방법적최소이승곡선의합구해산법,위우화방법재공정중적실제응용제공료경방편、경쾌첩적도경. 재대량토양양품복전조솔실측수거기출상,채용치신역방법병결합각모형적삼수약속,반연료Cole-Cole모형적삼수. 결과표명:기우치신역방법적최소이승곡선의합구해산법가이준학구취복전조솔모형삼수,단전제시필수제공교정학적초시치;여사용복전조솔폭치화상위적연합반연상비,단독고필폭치혹자상위적반연야능구취득상근적효과.
In order to promote the application of the complex resistivity detection method in the field of chrome-contaminated soil detection, a soil complex resistivity model should be established, which involves the adoption of a suitable model and its parametric inversion. The Optimization Toolbox of Matlab, including the least-squares curve-fitting method based on Trust-Region methods, provides a more convenient way for the actual application of optimization. Based on data obtained from a great deal of tests, the parameters of Cole-Cole Model were inverted by Trust-Region methods combined with constraint parameters. The results show that precise complex resistivity parameters can be obtained with the least-squares curve-fitting method based on Trust-Region methods under the condition that the initial value is provided precisely. Compared with union inversion of amplitude and phase, similar results can be obtained with the single inversion of amplitude or phase.