The Study Of Construction Safety Control On High-Risk Carst Tunnel

Along with the development of the transportation system of China, especially with the application of the western China development, the schemes of highways and tunnels in hilly areas high quality road construction are being more and more emphasized. The tunnels are becoming longer, wider, and the technology is becoming harder and more complicated. Because of the surveying in the early construction phrase is very difficult. It is hard to detect very clearly the water and geological conditions along the tunnel. This directly leads to the sudden occurrence of geological disaster during the tunnel construction. In order to adjust and deal with the unforeseeable problems and to make sure of the quality and safety of the project, we must launch the work of advance geological forecast about the disaster treatment in time and keep the construction arrangement justifiable while strengthening the monitoring measurement. Profound discussions on the causes and dealing measures of various of geological disasters are needed.Based on the practice of the Hurong west Longtan tunnel engineering, this article introduces the method and data processing of monitoring measurement, researches the methods of data regression, compares the functions of displacement data regression and provided more reliable information for numerical calculating about face analysis than the other's.It uses finite difference method to model the excavation of the opening of the tunnel. It also analyses the characteristics of the stress zone, displacement zone and the plastic zone based on the data that is obtained by surveying. Many meaningful conclusions are gained. This article studied the construction ventilation technique of deep buried long and large tunnel, as well as the slipform construction of deep and large shaft well lining concrete. It also analyses the construction methods, construction technologies of the key procedures in construction. Combined with the advance geological forecast, this article has done deep analysis of the reasons for disasters such as landslide and water and mud in rush of the complex geology area of deep buried tunnel. It also introduces applicable control schemes, and provides reference for similar project in the future.