Study On Dynamic Construction Of Tunnel And Safety And Stability Evaluation

With the extension of the tunnel to the mountains and deep water, the advantages of a tunnel in the whole transport sector will become increasingly prominent. Over the years, a variety of information is always in one direction of development projects, especially for tunneling work. In a very long time before the appearance of the new Austrian law, many tunnels are by virtue of experience and construction. Due to the special nature of the tunnel project, the construction environment is not the time to dig invisible, which led to such design or construction engineering experience alone there must be a certain blindness. Since the emergence NATM tunneling work introduces a dynamic construction, which compared to the previous method of construction has been a qualitative leap.Tunneling process, through the use of geological radar geological prediction, reflected signals usually appear multiple solutions. The study found that when interpreting the image in the image with a fully integrated geological sketch tunnel face, with reference to both the results of the same tunnel, forming a flexible integrated advanced prediction measures in the project can achieve good results.Chongqing Yuzhong paper selected as the research object connecting tunnels, the paper made a more detailed discussion on the construction of the tunnel monitoring measurement use. In summarizing the previous basis of technical and theoretical research on tunnel monitoring, field geological survey, on-site monitoring and measuring the comprehensive analysis of the information obtained, master rock dynamics, tunnel support structure system under different conditions of stress state and stress distribution under different conditions in the construction phase of tunnel construction. And in supporting existing conditions, analysis of the distribution of tunnel surrounding rock displacement field, stress field and the situation with the construction progress and development and change.The monitoring data and analysis results timely feedback to the design and construction, and the design of the optional parameters are compared constantly adjust support parameters and excavation to enable the project to be safe, economical and quick to complete. Further deepened the tunnel "information design and construction " concept thus achieving a comprehensive, dynamic tunnel construction monitoring information.