Implementation Plan Design for Mined Tunnel Crosses under Existing Railway Yard
Based on the underpass railway yard of a tunnel project in Jiulongpo District in Chongqing,this paper simulates the excava-tion process of the underpass area according to the actual excavation sequence and construction technology through the combination of numerical simulation and field measurement.From the perspective of construction mechanics mechanism analysis,the deformation and control measures caused by the existing railway yard during the construction of the underpass tunnel are studied.By evaluating the de-formation of the existing railway,the control measures suitable for the engineering geology are obtained,so that the new tunnel can pass through the existing railway yard under the guarantee of the normal operation and safety of the railway.
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