Tunnel upward floating model trial apparatus

The utility model discloses a tunnel floating model test device, comprising a simulated tunnel lining segment, a displacement meter, a simulated soil box and a compartment. The simulated soil box adopts a hollow closed container capable for pressurizing, which can contain soil and water. The displacement meter is fixed in the simulated soil box. The compartment is arranged in the simulated soil box, which upper and lower parts are open and the compartment can contain slurry. The simulated tunnel lining segment is arranged in the compartment, which can change weight to simulate different tunnel entities. The tunnel floating model test device can effectively simulate the floating conditions of entity tunnel lining segments under complex working conditions, such as different soils, different slurries and different soil covering depths, and can improve the approximation effect between test results and actual conditions, thereby providing reference data more tally and effectively with the actual situation for the research of tunnel floating problems.