Long-term treatment method for transverse convergence deformation of subway shield tunnel

The invention provides a long-term treatment method for transverse convergence deformation of a subway shield tunnel, which comprises the following steps: collecting engineering information of the tunnel, and finding out the current situation outline of the tunnel; determining a tunnel target contour according to the engineering information and the tunnel current situation contour; establishing a finite element simulation model, and carrying out back analysis on a peripheral load distribution curve; construction parameters are calculated through the decision tree model, treatment scheme design is completed, and tunnel treatment is conducted; predicting peripheral loads at typical moments through a recurrent neural network algorithm model; designing a construction scheme based on the tunnel peripheral load at the typical moment, and calculating a tunnel convergence deformation contour; monitoring at a typical moment, and determining whether to adjust the construction scheme according to errors. According to th