GPR rapid survey system for small-diameter tunnels

Eiji Sakurada; Masaharu Inagaki

doi:10.1117/12.462266

12 April 2002 GPR rapid survey system for small-diameter tunnels

Eiji Sakurada, Masaharu Inagaki

Proceedings Volume 4758, Ninth International Conference on Ground Penetrating Radar; (2002) https://doi.org/10.1117/12.462266
Event: Ninth International Conference on Ground Penetrating Radar (GPR2002), 2002, Santa Barbara, CA, United States

Abstract

Tunnel management system (TMS) is a software system that stores data on current tunnel conditions. The system designs repair strategy necessary to keep waterway tunnels in proper condition. The TMS database includes eye observation records, boring data, GPR-acquired information, etc. GPR has been widely used in Japan to disclose unseen objects behind the lining of waterway tunnels. Application has been limited, however, to comparatively larger diameter tunnels. A GPR rapid-survey system for small-diameter tunnels has been developed to fulfill the need for database completion of the TMS. Through application to many tunnels, GPR has been found effective in terms of obtaining knowledge objects behind the lining. Through theoretical speculation and experience, the interpreting effort has revealed many unseen events such as void, collapsed soil, and water accumulation. Such GPR information gave firm basis to learning the reason of faults (such as cracks, which appeared on the surface), evaluating the degree of risk for collapse, and determining repair methods.

Citation Download Citation

Eiji Sakurada and Masaharu Inagaki "GPR rapid survey system for small-diameter tunnels", Proc. SPIE 4758, Ninth International Conference on Ground Penetrating Radar, (12 April 2002); https://doi.org/10.1117/12.462266

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