Study on disturbance characteristics of surrounding rock of soil tunnel with shield method
YANG Ru-ping;Shaoyang County Highway Administration Bureau;
Shield tunneling tunnel surrounding rock disturbance characteristics has always been one of the important issues in the engineering sector. Based on this,relying on a city subway line 2 section of a shield construction method of tunnel construction as the background,and then establish each analysis step under the isotropic average numerical model. Model combined with the"equivalent layer"model to reflect the tunnel excavation quality,the use of "life and death unit "method to simulate the tunnel excavation process. Based on the calculation results of the deformation law of the surrounding rock,the change of the stress,the development trend of the plastic zone and the change of the pore water pressure,the disturbance characteristics of the surrounding rock of the tunnel are analyzed. At the same time,the rationality of numerical model is verified by field measurement data.
【CateGory Index】： U455.43