TBM/shield tunneling machine shield body design optimization method based on machine jamming risk prediction

The invention discloses a TBM/shield machine shield body design optimization method based on machine jamming risk prediction. The method comprises the following steps that 1, surrounding rock geological conditions and shield body material parameters are obtained; 2, tunneling a tunnel through a TBM/shield tunneling machine method to obtain U (t, P); step 3, Ueqlt; when Uy is true, U is calculated; if not, checking whether the design is reasonable, if so, calculating U, and if not, returning to the step 1; step 4: Ugt; when r is true, Pi is calculated; and if not, the risk of machine jamming is avoided. Step 5, when Pilt; when Pmax is true, calculating Ff; if not, if the deformation is slight, adjusting the tunneling parameters and returning to the step 2, and if the deformation is obvious or serious, adjusting the shield body design parameters and returning to the step 1; 6, when Ff + Fbgt; when the FI is established, the machine is clamped, the grade of the clamped machine is judged, if the machine is slight