EngGeo2 GPR Study of Depressed Areas in the Upper Cross-section

One of the major problems in the process of GPR investigation is searching for so-called weakened zones in subsurface potentially dangerous for engineering constructions in connection with possibility of development in them any deformations. This method allows to allocate these areas without infringement of sediments' solidity. But the problem is to describe indications of such weakened zones on radargrams. We consider two groups of questions: possibility of detection of emptiness under rigid coverings (asphalt, concrete etc.) and allocation of the weakened zones in subsurface.