Development of Monitoring Information Management and Early Warning System for Tunnel

In view of difficult management and analysis of mass monitoring data about constructing tunnel,by using Microsoft Visual C+ + technology and SQL Server 2000 database,the authors develop a tunnel monitoring information management and early warning system,which has the advantages of practicability,reliability and extensibility.The system includes tunnel information related to its geology,design and construction,emphasizes the functions of information treating such as storage,process,query,analysis,prediction and early warning and automatic output of monitoring reports.The early warning module uses cumulative displacement,displacement rate and the trend of displacement rate as the criterion of surrounding rock stability.It can be used to guide the tunnel construction in real time,which plays an important role in evading possible existed risk and ensures the construction safety and reliability of tunnel.