Outer Water Pressure Distribution In Tunnel Lining With Shallow And Water Plugging The Limit Of Technology Research

With the economic development,more and more cities began to build tunnels and underground works,due to the presence of groundwater,underground structures in the construction and use of the process are always subject to groundwater damage.In the initial stage of tunnel construction,the principle of "row-based",The groundwater uncontrolled emissions,resulting in a lot of water waste,but also undermine the local ecological environment.Later,people use fully enclosed type of waterproof tunnel,the surrounding groundwater completely blocked outside the tunnel,but due to the construction process and the actual site engineering geology and other reasons,the actual situation is difficult to achieve the desired state,the tunnel leakage Of the phenomenon occurs frequently,seriously affecting the safety during the operation.Therefore requires the use of "blocking the main,appropriate emissions" design principles of the voice is also increasing.In this paper,through the participation of the Qingdao Metro Line M2 Tongan Road Station and Miao with the interval between the construction of the Qingdao subway station and the key technologies to carry out further research.In this paper,the seepage law of groundwater near the tunnel engineering in Qingdao hydrological condition is revealed by using literature data collection,site construction,field monitoring and numerical simulation.the seepage of the subway construction period,Accident analysis and maintenance treatment;for the leakage accident were selected type of closed-type interval and the use of water shut-off limit of the station for monitoring and analysis;for the same area with the actual geological conditions and line planning using "water block" principle And the water pressure around the lining of the water-blocking and water-restricting tunnel is simulated and analyzed.the water pressure around the tunnel will be similar under the same geological conditions Design of water blocking and drainage limit tunnel can be used for reference.