The impact acoustics method is a commonly used inspection method for tunnel linings. This method is simple but has issues such as variations in the inspection results of different technicians and the considerable amount of inspection time. In this study, we developed an inspection method using a remote sensing system that detects defects in concrete elements, as an alternative to the impact acoustics method. This newly developed system is used for inspecting the lining of tunnels on the Shinkansen Line; as a result, it is determined that the vibrations generated by maintenance vehicles and power generators adversely impact the accuracy of measurements. In order to reduce the vibrations generated by maintenance vehicles and electric power generators, a new vibration canceling platform is developed and installed on the proposed system; this platform is confirmed to be capable of removing the abovementioned vibrations.
展开▼
