Based on the multi-arch tunnel #2 for the JK-2 Contract Section in the Zhangjiakou-Shijiazhuang Expressway

the information monitoring platform based on in situ multi-source sensors combined with the regression analysis and parametric feedback information concerning the highly confident models have been developed to investigate and analyze the monitored data. The dynamic characteristics of surrounding rock stress

displacement

deformation

plastic zones and supporting structures in different construction processes are analyzed. Through complete analysis and research

various abnormal phenomena are analyzed; and the stability and effectiveness of the tunnel surrounding rocks have been described. Moreover

based on MIDAS/GTS (rock and tunnel analyzing system)—professional finite element software and topographic contours

the tunnel construction simulation is implemented by establishing 3D model. Tunnel structures and supporting systems of the different construction methods have been compared with the result of numerical simulation. Aiming at the designed construction method of asymmetrical pressure and unfavorable geological setting

some suggestions and the optimization scheme have been proposed

which could also be recommended for similar future projects.