Abstract：The informational management technique of the tunnel construction is an important content in the construction of the New Austrian Tunneling Method. According to the construction of the twin-arch tunnel of Xiaojinkou，by the statistical analysis of the measurement data of the section 1-1 in the class II surrounding rock masses，the mechanical models of the structural members in the twin-arch tunnel are proposed，including the model of the contact stress between the surrounding rock masses and the first lining，the model of the axial force and bending moment of the steel framework，the model of the axial force of the anchorage bolt and the model of axial force and bending moment of the secondary lining. The relationships among the deformation of surrounding rock masses，the class of surrounding rock masses，excavation method，time of support and parameters of the support are put forward. The primary computer system of informational management of the construction of the twin-arch tunnel is set up. The system is composed of data collection，data transmission，data processing and data feeding-back. These research results are of guiding significance and practical application value for the similarly tunnel cases.
2004, Vol. 23 
