Risk assessment and implementation of deformation disaster for operation tunnel based on entropy weight-grey relational analysis

Prevention is of paramount importance in tunnel engineering, especially operation tunnel. In this study, the deformation data Suzhou Metro Line 1 are used to evaluate health shield during operation. Firstly, relationship between effective ratio bending rigidity and analyzed, results show that has a negative power with deformation, conversion from realized corresponding risk classification criterion established. Secondly, Grey Relational Analysis Entropy Weight Method deal data, which overcomes problem selection not representative. Finally, optimum obtained successfully complete assessment tunnel, result highly consistent actual project. addition, application named Operation Tunnel Deformation Risk Assessment System developed by using computer technology, saves time for increases flexibility. The method passes validation case can provide reference disaster prevention