The tunnel is an underground concealed project, which will be affected by potential and unpredictable geological factors. The tunnels built in the early days often have health problems such as tunnel vault cracking, surface settlement, tunnel water leakage, surrounding rock deformation, and tilting of nearby buildings. As an indispensable part of the city's lifeline, in order to ensure the safety of tunnel engineering and timely forecast danger, it is extremely important to monitor and evaluate the safety and stability of tunnel engineering.
WITBEE® Wanbin® Tunnel Structure Health Monitoring System deeply integrates AIoT, Beidou satellite navigation, 5G, big data and bridge professional technology to realize comprehensive perception of the tunnel body and environment, tunnel builders and equipment, and use cloud computing technology to analyze the perceived information Carry out data fusion and processing analysis, so as to provide intelligent response and decision support for advanced geological forecast, design plan and modification, implementation of construction plan, release of early warning information, implementation of emergency prevention and control plan, etc., real-time grasp of tunnel construction and operation status, and establish The monitoring, evaluation and forecasting system of tunnel engineering seeks advantages and avoids disadvantages, realizes real-time security pre-alarm of tunnel service level, provides data support for rational allocation of tunnel maintenance resources, provides scientific and technical basis for reducing tunnel operation and maintenance costs, and assists managers Make scientific decisions.
Monitoring content
1. Tunnel deformation monitoring
Subsidence and displacement of key support positions such as the ground surface, vault, and arch waist lead to structural deformation of the original tunnel, which is likely to cause accidents. By installing intelligent structural diagnostic devices (including Beidou) and intelligent structural diagnostic devices, real-time monitoring of displacement and settlement important data without the risk of structural deformation.
2. Vibration of surrounding buildings
There are construction disturbances and earthquake vibrations around the tunnel, which will cause deformation of the surrounding soil layer or soil and changes in the stress field. In addition, the extrusion and vibration of construction machinery will cause the existing tunnel structure to be unbalanced in force, causing the tunnel structure to be damaged. Local horizontal displacement, settlement, stretching, compression, shearing, bending, torsion and many other deformations will cause the settlement of the ballast bed and the collapse of the tunnel. Monitor the vibration status of surrounding buildings in real time, analyze the data through digital simulation, realize interference analysis, and maintain the safety of tunnel operation.
3. Environmental monitoring
By installing a temperature and humidity monitor, the ambient temperature and humidity in the tunnel are analyzed in real time and the results are obtained. At the same time, the results are fed back to the staff in the main control room. Alarm limits can also be manually set, including low and high temperature alarm limits. , Humidity alarm limit, sound and light alarm immediately after exceeding the limit, in order to prevent the staff from misjudging the tunnel environment and causing life danger.
4. Water accumulation monitoring
By installing the waterlogging monitor at a higher place in the tunnel prone to waterlogging, the water level in the tunnel can be monitored in real time; when the water level exceeds the threshold, the sensor will automatically upload the alarm signal to the system platform, which is convenient for the staff to quickly locate and timely deal with.
Tunnel structural health monitoring is an important means to ensure the safety of tunnels and an important part of monitoring the safe operation of urban lifelines. Through structural monitoring, environmental monitoring and monitoring of surrounding buildings, potential problems can be discovered and dealt with in time to maintain the stable and safe operation of the tunnel. With the continuous development of monitoring technology, tunnel operation monitoring will become more and more intelligent and precise, providing people with safer and more efficient tunnel transportation services.