Abstract:Based on the Donghuan Tunnel of Guangzhou-Foshan Loop Line, using finite difference software FLAC3D numerical analysis model is established, taking improved Burgers (CVISC) viscoelastic creep constitutive plastic, The loading characteristics of the tunnel structure of different buried soft rock shield tunnels under surrounding rock creep are studied., discusses the deep soft rock shield tunnel surrounding rock pressure control strategy - supporting structure and surrounding rock interaction rules, the results showed that: (1) after the initial excavation of the tunnel, the surrounding rock at the top settles and the bottom upheaval. Under the creep effect of surrounding rock, segment lining settles as a whole. The larger the tunnel is buried, the more significant the overall settlement of the tube segment. (2) bending moment, axial force and contact pressure gradually increase with the increase of tunnel burial depth. When the accelerated creep is not taken into account, the internal force and contact pressure of the lining are basically the same in the creep process, and there are two stages of attenuation creep and stable creep.