Using video logging to study karst manifestations in the central part of Kazan

This article presents an overview of modern methods for using video logging (TV logging) to study karst formations and assess the karst hazard of areas. It examines the technical aspects of video logging, its advantages, and limitations in exploring karst cavities. The paper also presents practical experience in using this method to assess karst hazards in the central part of Kazan. It is shown that video logging in karst-prone areas makes it possible to assess the condition of а soil body, identify the location and dimensions of cavities more accurately, which contributes to improving the safety of construction and operation of engineering structures.