Influence of Metro Shield Tunnel Construction on Nature Gas Pipeline
Peck formula and finite element anal-ysis software are used to analyze the influence of metro shield tunnel construction on natural gas pipeline.Peck formula is used to calculate the subsidence influ-ence range and the maximum subsidence of pipeline layer.The subsidence influence range is about 43.1 m,and the maximum subsidence of pipeline layer is 1.77 mm.According to this,the curvature radius of the pipeline can be calculated to be 19 705 m,which meets the standard requirements.The three-dimensional geotechnical finite element analysis software Midas GTS is used to simulate the natural gas pipeline,the subsid-ence influence range is about 50.0 m,and the maxi-mum subsidence of the pipeline is 13.9 mm.The cal-culation results of Peck formula are close to the simula-tion results,and both Peck formula and simulation can well calculate the ground subsidence during under-ground construction.
metro shield tunnelground subsid-encepipeline deformationnumerical simulation
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