| Risk control is one of the most important work of the management of railway tunnel construction project,especially in complex projects.Taking North-east Freight Car Winding Down through Taihe Hub of North Second Ring Highway of Guangzhou Railway Hub as an example,the construction risk analysis and evaluation as well as dynamic risk management method and platform of railway tunnel under-crossing the highway are systematically studied.Contents and results of this study are as follows:(1)According to related regulations and guidelines,risk analysis of relying project is carried out.On the basis of analysis of key and difficult engineering problems,the risk source analysis,inspection and risk factor identification are carried out.(2)Aiming at the major risk accidents faced by the supporting project,the risk of major accidents such as tunnel collapse,seepage and instability of tunnel entrance is analyzed and evaluated in detail.Major risk control countermeasures and construction control strategies are put forward.(3)Combining with the relying project,the dynamic risk management and control scheme of engineering construction has been worked out.With the employment of augmented reality technology and equipment,dynamic risk management system for engineering construction has been developed.The results have been applied and verified in the support engineering.It ensures the construction safety of Taihe tunnel under-crossing the North Second Ring Highway and the expected goal is achieved. |
