Research conclusions:Form the study，it is concluded:(1)Little influences on lining stresses for different element length. Relatively fine lining element division is beneficial to lead a more accurate result.(2)The normal and tangential spring can be substituted by horizontal and vertical spring，then the spring value can be corresponded with geology survey report.(3)Ground overload can be proportionally reduced based on the loosed earth pressure or earth pressure arch，and the reduction factor is put forward correspondingly. Then，the positive relationship between ground overload and lining stress is made clear. (4)The scope of local ground overload and its relative positional relationship with tunnel,and the diffusion angle of ground overload should be considered together for the determination of the concrete influences on lining stresses. And different lining structure calculation models based on different scope of additional ground overload are put forward correspondingly. (5)This study can lead a reference for the calculation model and calculation theory in underground engineering.