Research On Tunnel Health Monitoring And Intelligent Management Techniques

In order to ensure the safety in the operations of the tunnel during the construction, timely and advanced identification about the relative risk during the construction is necessary. And owing to it, we can take technological and management measures timely during the tunnel management. Tunnel health monitoring (Tunnel Health Monitoring) technology is becoming the field of tunnel construction and the safety management of research focus.Based on the analysis about requirements in the tunnel health monitoring, the tunnel health monitoring system is built in this paper, and finding that the difficulty in the construction of the tunnel health monitoring system focus on the steel detection of the supporting material and the stability detection after the tunnel is completed. This paper is based on the ground penetrating radar technology and proposed a no damage detected method to identify the inner steel construction of the concrete component; And based on the EEMD-wavelet packet analysis technology, established the damage detected method of the steel construction; Integrated the laser-communication-computer technology, established the timely stability detection technology after the tunnel is completed. The supporting material detected technologies proposed are done a example authentication. The major innovation focus in this paper as followed:The first, for the importance of the safety during the tunnel construction, this paper proposed the tunnel health monitoring system which applies many kinds of signals and chemical composition. And completing a designment related to the system composition,features and achieved technology.The second, it proposes an improved parameter estimation method, which is based on the data of scanning tunnel supporting body by ground penetrating radar. It achieves the non-destructive testing of concealed steel components of supporting body and so on through the vibration of echo signal processing, and verifies the validity of the method by disposal and comparison of wave form.The third, it proposes a sets of methods about the inner steel parts in the tunnel supporting material which combined EEMD with wavelet packet analysis. This method based on the stress wave signal, doing a calculation about the IMF component decomposition and wavelet packet energy decomposition for the echo. And examples have proved that it is possible to do a no damage detection for the location and damage situation of the recessive materials such as inner steel parts.The fourth, the tunnel deformation monitoring real-time monitoring system that based on the image edge and contour extraction, laser tracking technology is established. This system integrates the laser and receiver, wireless and wireline transmission technology and computer analysis of information technology through adverse geological sections. This system can enable to realize real-time observation point laser spot detection identification and displacement, high-precision real-time development of tunnel deformation observation. Verification examples show that this system can improve the accuracy significantly compared with traditional systemsThis paper concentrates on the latest signal technology combined with the tunnel engineering practice, in line with the direction of harmonious social development, in improving the safety of tunnel construction and operation of security that has practical value. However, due to constraints of time and work, these new ideas need to engineering practice, further refinement.