| Tunneling engineering informational construction is a set of systematic monitoring plan which build to reduce the risk of tunnel construction and the engineering cost and the interference of tunnel construction. At present the construction methods of tunnel in our country are mainly new austrian tunnelling method which is a information methods in essence. Monitoring measurement a indispensable part in the design and construction process of new austrian tunnelling method. The tunnel excavation process is a complex dynamic mechanical process, and we can’t get accurate data such as the parameters of adjoining rock,design load and geological parameters from the investigation and experiment before the construction. Monitoring measurement must be carride out in constructing phase in order to grasp the working state of surrounding rock and supporting structure in time. We can adjust constructionprocess and support parameter according to the change information of stress and displacement of the surrounding rock and supporting structure which was caused by the excavation of tunnel face.This thesis, relying on the construction of Doupengshan tunnel of Guiyang Guangzhou high-speed railway.do a deeply analysis and research on information construction technology which was based on monitoring measurement. Following is the main content:Introduces the design of monitoring measurement, the monitoring content,the analysis technology of monitoring measurement data and information feedback system. Reported the rules of crown settlement and horizontal convergence in different surrounding rock grade according to the processing and regression analysis of their data, on the basis of which evaluated the stability of surrounding rock and the working state of supporting structure and determined the construction time of the secondary lining. The result of numerical simulation and field measurement are compared to analysis the importance of position and time to the observation points. |
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