Estimation of horizontal multilayer soil parameters using Newton interpolation polynomial and h-DETLBO method

Abstract

Soil parameters estimation is an essential step to design an electrical substation. In this article, a new approach to evaluate the parameters of unknown multilayer soil model is presented. Methodology based on Newton polynomial interpolation and hybrid of differential evolution and teaching learning-based optimisation technique (h-DETLBO) is used in the calculation of soil apparent resistivity. Here, h-DETLBO technique is used to obtain horizontal stratified soil parameters such as number of layers, resistivity and thickness of each layer. The results of the proposed method is verified by comparing data of experimental apparent resistivity obtained from field measurement available in the literature for horizontal stratified soil. Error between measured and theoretical apparent resistivity of soil stratification is estimated. The estimated error is further helps to identify the soil parameters. The effectiveness of this methodology is proved to apply it for different case studies, and obtained results are theoretically examined with recently reported techniques that ascertain the validity and efficiency.