| Underground integrated pipe gallery,said that the simple point is to expand the capacity of the pipeline,to meet the maintenance personnel enter and repair the super-large pipeline.Since the 18 Congress of the Party,the underground comprehensive pipe gallery began to gradually popularize.Based on this.In this paper,based on the engineering geological conditions of shield excavation in a city integrated pipe corridor,taking the surface of urban integrated pipe gallery as the research object,the finite difference numerical simulation software FLAC3 D is used.A numerical simulation study on the surface settlement of a city's comprehensive pipe gallery excavation is carried out.This paper mainly includes the following aspects:By using the finite difference numerical simulation software FLAC3 D on the pipe gallery a city settlement of ground surface settlement of different excavation depth numerical simulation experiment,obtained the general law of a city comprehensive pipe gallery of surface subsidence and other parameters,and the simulation results of a comprehensive settlement of the city surface pipe gallery of the final settlement law the initial evaluation.At the same time,using Peck empirical formula,the surface settlement of a city comprehensive pipe gallery is calculated.According to the calculation results,the law formula of surface subsidence is obtained by curve fitting.Compared with the finite difference numerical simulation software and the measured values in the field,the relationship among them is obtained,and the general law of settlement is obtained.The research in this paper will play a certain role in paving the ground settlement of the shield excavation of urban integrated pipe corridor in the future,and evaluate the surface building structure of the urban integrated pipe corridor.A referential evaluation method is proposed for the influence of the equivalent settlement of existing underground pipelines. |
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