Trends in non-destructive testing of rock bolts
Mario Bačić (University of Zagreb)
Ken G. Gavin (TU Delft - Geo-engineering)
M. Saša Kovačević (University of Zagreb)
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Abstract
Rock bolts represent a critical element for many rock mass stabilization, tunnel construction, and underground work projects. Therefore, the evaluation of their condition is vital for proving their functionality over the entire life-cycle of structures. A number of techniques for quantifying condition of rock bolts are presently applied or are being developed. These include acoustic-based and vibration-based methods, which take advantage of various types of sensors and signal-processing tools. This paper provides an overview of available non-destructive test methods for rock bolts, considering both current practice and state of the art approaches.
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