In the reinforcement technology of hydraulic engineering dams

the anti-seepage wall engineering has concealment.It is necessary to ensure the construction quality and exert its due quality effect. It is especially necessary to test the quality of the anti-seepage wall. In this paper

the high-density resistivity method is used to study the physical model of the seepage wall. The water injection experiment is used to simulate the background

and the background resistivity value is compared with the resistivity value after water injection

the results show that the defect reaction has a good correspondence with the defects of the experimental model

indicating that the high-density resistivity method has a good ability to reflect the defect of the anti-seepage wall. The obtained results can be used as a reference for the high-density resistivity method in the nondestructive testing of cut-off walls.