Examination of Crack Tensor for Soundness of Tunnel Lining

Abstract

The evaluation of tunnel lining degradation state is commonly conducted by engineers directly on the site. However, it is uneasy works. Moreover the degree of health judgment has not been clear whether it is made systematically or rationally. In this research, quantification of tunnel lining degradation degree has been tried from crack tensor based on rock mechanics engineering. The results were compared to the one outcome from the degree of health. It has shown that the crack tensor and the degree of health have a correlation, therefore it may be used as a tool in maintenance management work.