Study On Numerical Simulation And Monitoring Technology Of The Shallow Bias Tunnel

There is thin strata above Shallow bias tunnel, and more are strong weathering zone, rock is generally more broken, and usually have layers folder. In the current design of the new Austrian law, the construction of the tunnel is one of the control paragraph. New Austrian Tunneling Method as one of the three pillars of the monitoring measurement bias shallow tunnels to ensure the smooth implementation of projects play an important role.In this paper, in the Huangshan to Taling highway Changgan I tunnel is the shallow bias tunnel based as the project. First select the bias of the shallow section of a typical section of K13 +610 Muchonggou Goudi, the section of the excavation process and the supporting structure of the traits, the use of the tunnel analysis software ANSYS to carry out a simulation analysis and the results show that by given the conditions and parameters, the tunnel excavation and support is safe and abundant. And then monitor the actual measurement information, the tunnel is given in paragraph shallow gully bias encountered in the actual excavation of the problems and measures taken. Comparison of simulated and actual excavation excavation, the structure comparison shows that simulation has to a certain extent reflected the actual situation is an important reference value. However, simulation results with the actual situation may differ from each other to analyze the reasons is due to uneven distribution of rock, the construction process of a sudden rainfall, the construction quality of a range of issues and so imperfect in the simulation software can not fully reflected.The normal working from the tunnel problems until the final solution, which runs through the shadow of Monitoring, Monitoring played a "eyes" of the role. This article then detailed in paragraph how shallow bias Monitoring to ensure that the construction work. Monitoring includes measurement projects and the election will test the project. This paper will test the election measure the various individual projects to carry out the purpose, methods, measurement frequency and data collection, processing, feedback in detail. Draw bias in the shallow section of the geological conditions of observation and support of the project we must pay great attention to the observation of tunnel seepage water, such as water leakage, according to the size of the strength to take appropriate measures, if necessary, can use small pipe grouting to replace the bolt in order to reinforce and dense rock; for tunnel displacement and subsidence around the project, in the shallow bias above the measuring point should be properly encrypted and processing a large number of test frequencies to enable timely and effective reflection of the actual situation in the tunnel.. In short, the Monitoring the construction of the new Austrian law an integral part of the tunnel. Shallow bias of the tunnel section of active and effective monitoring of the measurement, the smooth progress of the project, safety is particularly important.