The Application of MMF Model in the Tunnel Controlling

it is very important to measure distortion in the construction of tunnel.Get the lasted predict data and rule with regressive analysis when the data is stabilization for the construction of second line.In the paper,the MMF model is used to regressive analysis and finds out the relationship between surrounding rock mass deformation and time,so that,a scientific program can be made to ensure the quality of the project and the safety of the construction.