Study on the electric resistance method in crack depth measurements

Obtaining geometric parameters, especially depth, and describing the morphological characteristics of cracks are great significance to control engineering disasters accidents caused by cracks. The electric resistance method is based on principle differences in electrical properties between soil, which could be used measure single crack depth at project sites. There exists an R min value corresponding a specific electrode distance d each f - obtained laboratory experiments. Furthermore, two-dimensional finite element model soil with established carry out numerical simulation analysis considering width W , D complex conditions. results reveal dynamic variation rules after development, for value, approximately equal . In range field, offset rotation have little effect, while measurement strong dependence relocation movement. regulation gives guidance inversion sites has been applied measurements expansive slope. as proposed integrated approach brings new perspectives into study field applications.