Abstract: In a subsurface excavation section of the flood diversion culvert of Fushi Road,the large part of the shallow culvert subsurface excavation is in the artificial fill,and the thickness of the artificial fill at the bottom of some areas is still 2 m.Artificial filling is loose,poor self-stability,easy to collapse,not easy to form holes,and difficult to construct.In order to avoid potential safety hazards caused by artificial filling and reduce tunnel deformation in the later stage of construction,sleeve valve tube grouting technology is used to reinforce the filling layer to ensure the safety of construction and the quality of tunnel engineering.According to the effect of project implementation,sleeve valve pipe grouting reinforcement has better effect on settlement and deformation control of excavation of tunnel in artificial fill.