Author 1:
Name & Surname: Nabatov V. V.
Company: Mining Institute, National University of Science and Technology MISiS (Moscow, Russia)
Work Position: Assistant Professor
Contacts: e-mail: nv4@mail.ru

Author 2:
Name & Surname: Voznesensky A. S.
Company: Mining Institute, National University of Science and Technology MISiS (Moscow, Russia)
Work Position: Professor

The research deals with the current problem of monitoring subway structures, with a focus on development of a new procedure for nondestructive georadar detection and assessment of voids at the soil–lining interface. Based on the analysis of noises and the data of georadar measurements carried out on a full scale and on test sites, the authors propose and extensively illustrate the graph of identification signal processing, detection and visualization, including automated adjustment and transformation of amplitudes and data cleaning techniques, which enables location of voids in the weak contact layer between thick tunnel lining and soil under conditions of noises. The authors believe the research findings imply feasibility of creating automated systems (methods) for processing of radargrams, which is of current importance in view of excessive and accretive scope of georadar surveying of lining in tunnels and other engineering structures of subways. 

The article is prepared under research work plan no. 109 in the framework of the basic task of the state assignment in the area of scientific activity for 2014 (RF Ministry of Education and Science assignment no. 2014/113).

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