Abstract：The double-arched highway tunnel was constructed with unsymmetrical pressure，complex geological condition of shallow depth zone in Hunan Province. In order to guarantee the safety of tunnel construction，in-situ monitoring was carried out at the section of tunnel. Based on the field measurements，the deformation of surrounding rocks was analyzed，and the process of construction was simulated by finite element method(FEM). According to the comparisons of numerical results with field measurements，the proposed numerical procedure was found to be an effective approach for predicting the deformation of surrounding rocks；and the achieved results can provide important guidance to tunnel construction. The example shows that the finite element simulation analysis is useful to the construction of unsymmetrical pressure double-arched highway tunnel.
