Study Of Soft Soil Excavation Method

New copper Yang Gulong nine railway tunnel in soft layers, geological environment is relatively complex, the excavation is difficult. Taking Yang Gulong tunnel as the research object, through the preliminary scheme comparison, by comparing the numerical simulation of selected scheme to calculate, laid the foundation design of the construction program, and through the construction process, to evaluate the effect of construction scheme. The main research includes the following several aspects:(1) Firstly introduces the construction method of tunnel under complicated environment, to Yang Gulong tunnel project as the research object, combined with the characteristics of Yang Gulong tunnel project, the geological conditions, hydrologic conditions, site conditions and various environment factors, from safety, quality, progress and economy research, select the optimum construction scheme.(2) Of Yang Gulong tunnel CRD method was applied to numerical simulation analysis, concluded that the Yang Gulong tunnel construction has the guiding significance of the conclusion.(3) By considering the Yang Gulong tunnel comprehensive factors, formulate and analyzes Yang Gulong the construction plan of the tunnel. And of the construction process by adopting monitoring means feedback.