The Study Of The Peripheral Environment Influence By TBM Constrction Under Urban Rail Traffic

With the increasing of long railway tunnels, the rapid construction is being paid more attention. Chongqing rail transit line6TBM test is domestic for the first time being used in the urban environment of TBM important project, which has the important meaning of the landmark. This paper studies the peripheral environment influence by TBM construction mainly from four parts based on Chongqing city rail transit line6, providing important experiencein the engineering practice for the first time in the urban environment TBM application.Research starts from engineering investigation, main simulation and field monitoring and so on, the main research contents include:(1) Through the engineering research and field monitoring, construction of the tunnel TBM vibration alongthe Bridges, the slope, houses, underground engineering structure and vibration is very sensitive to the machine, the impact of equipment, etc. Study the result of monitoring, to rationally adjust the excavation parameters and assure surrounding structures and buildings in the safety of the surrounding.(2) Through the engineering research and field monitoring, to study the influence of stability of surrounding rock of construction of TBM, and combine with the theoretical analysis the supporting parameters optimization, in order to achieve the purpose of saving the project cost..(3) Through numerical simulation method, analyzing the influence of the buildings when TBM wears structures and buildings under different excavation parameters. Through the ground deformation analysis, differential settlement of buildings and tunnel stress analysis to reflect the tunnel, soil and structures and buildings in the interaction between the three things.(4) We analysis the impact ofstation construction period and the station construction techniquesmainly from the order of time and spatial sequence when TBM passing by the station. Combined with the specific case of engineering, weanalysis the pros and consof different ways of passing by the stations over schedule and way station construction technology...