Construction method for controlling settlement convergence of shallow buried loess tunnel with high water level

The invention discloses a construction method for controlling settlement convergence of a shallow buried loess tunnel with a high water level. The construction method includes the following steps that(1) precipitation of a precipitation well is achieved; (2) the reserved deformation amount is determined; (3) the step height is determined; (4) upper step excavation and preliminary bracing are achieved; (5) an upper step false stull is applied; (6) one sides of middle steps are excavated, and preliminary bracing is achieved; (7) a middle step false stull is applied; (8) one sides of lower stepsare excavated, and preliminary bracing is achieved; (9) primary support closed-loop construction is achieved; (10) secondary lining invert arch pouring is achieved; and (11) pouring of secondary lining arch wall is achieved. According to the method, design is reasonable, economic and social benefits are obvious, energy saving and environmental protection can meet the standard requirements, the technology reaches the advan