The Application Research on Underwater Riprap Recognition Using High-Density Resistivity Method

Abstract

We established a typical ripped-rock revetment engineering geoelectric model based the resistivity difference of ripped-rock and its surrounding rock. And we also realized the models’ forward and inversion calculation for different device types of high density resistivity method using finite element method. Results show that the α device could delineate the horizontal scope of the ripped-rock better, and the γ device could reflect the bottom of ripped-rock better than the other three device. In addition, we can also get riprap’s bottom boundary according to the gradient belt of resistivity of the β device. In a real world application, we use the small subdomain filtering technology to enhance the image, better divide the riprap distribution range.