Study On Risk Monitoring Of Tunnel Construction

In recent years our country has increasd the investment of infrastructure.There are many tunnel need to be build.especially in the high-speed railway and highway construction. At the same time tunnel construction has the nature of concealment of large, complex construction technology, complex geological condition, construction cycle is long wait for a characteristic.So sometimes there is a risk of accidents in the tunnel construction. In this paper, in order to tunnel construction units in the actual construction process of risk control research background, a simple, effective, economic tunnel construction risk control method.First this paper analyzed the essence, characteristics and measurement of risk. Next it introduces the construction process of tunnel and commonly used construction method for tunnel construction, and may appear in some of the risk undertook corresponding analysis, put forward to the deformation of surrounding rocks of tunnel construction phase of the risk factors as a control object. Then it discussed the concept, significance, content and process of tunnel construction risk. Risk control is mainly divided into the risk monitoring and control of two parts. Risk monitoring include the purpose, content, method, frequency and data analysis. Risk control based on the monitoring information, if the tunnel construction risk level reaches or exceeds the preset valve value, the risk monitoring system immediately issued a warning signal.If warning signal is staffed by the risk management,we should starting the risk control plan immediately and take corresponding risk measures. After this, risk monitoring is continued, until the whole tunnel construction project is completed.Based on the risk control processes of tunnel construction, using the Visual C#. NET2010, SQL Server2008and Flex3compiled tunnel construction risk monitoring system, the system includes:the announcement of module construction module, data management module, monitoring, early warning and emergency management module and system management module and other parts. At the same time, the system is applied to urban tunnel construction risk control example.The results of application show that this tunnel construction risk monitoring system in tunnel engineering project construction process has a certain practical.