Water burst and mud burst testing device for high-pressure-bearing tunnel

The utility model belongs to the field of testing devices, and relates to a water burst and mud burst testing device for a high pressure-bearing tunnel. The water burst and mud burst testing device comprises a model testing platform and a pressure stabilizer, wherein the model testing platform is divided into an internal square cabin, an external pressure-bearing outer wall and tunnel openings; the internal square cabin is placed in the external pressure-bearing outer wall; the tunnel openings are welded on the internal square cabin and external pressure-bearing outer wall; and the pressure stabilizer is used for providing stable water pressure to the testing platform, and consists of a high pressure nitrogen cylinder and an air-liquid compound-type constant pressure water tank. The water burst and mud burst testing device can simulate a water burst and mud burst process under high water pressure and can realize good continuous pressure stabilizing effect.