Ground surface settlement calculation method for ultra-shallow buried pipe curtain underground excavation tunnel

The invention provides an ultra-shallow buried pipe roofing underground excavation tunnel ground surface settlement calculation method, which comprises the following steps of: simulating ground surface settlement deformation after tunnel excavation by adopting a stratum structure model for an ultra-shallow buried pipe roofing underground excavation tunnel to obtain a maximum vault settlement value, a maximum ground surface settlement value and a ground surface deformation settlement curve; adopting the load structure model to select a tunnel vault steel pipe, and calculating to obtain the maximum value of tunnel vault settlement; calculating the maximum value of the surface settlement of the ultra-shallow-buried pipe-roofing subsurface tunnel; calculating a settlement curve adjustment coefficient; and multiplying the data of the earth surface deformation settlement curve by the settlement curve adjustment coefficient to obtain corresponding data of the earth surface deformation settlement curve of the load st