Shield tunneling machine with cast-in-situ supporting function for tunnels with large horseshoe-shaped sections

The invention provides a shield tunneling machine with a cast-in-situ supporting function for tunnels with large horseshoe-shaped sections. The shield tunneling machine comprises a cutter head device, a driving system, a shield structure, a spiral conveyor, a rear matching system and a main pushing system. The cutter head device is arranged at the front end of the shield tunneling machine, the driving system is adjacent to the rear of the cutter head device, integral equipment is supported by the shield structure, the spiral conveyor is arranged at the rear of the cutter head device, the shield structure is provided with a horseshoe-shaped section and comprises a front shield and a tail shield, the front shield and the tail shield are connected with each other by a hinge cylinder, and the driving system is mounted in the front shield and is connected with the cutter head device at the front end of the shield tunneling machine. The shield tunneling machine has the advantages that the efficient shield tunneling machine is high in construction efficiency, tunneling is carried out by the aid of earth pressure balance principles, and strata are rarely disturbed; tunnel face and front shield earth pressure balance effects can be effectively regulated when the large horseshoe-shaped sections are excavated, accordingly, earth surface sedimentation can be effectively reduced, and the shield tunneling machine has smooth scrap discharge ability; site lining and excavating can be simultaneously carried out, accordingly, the special-shaped tunnels can be lined and formed at one step, the construction cost can be lowered, and the shield tunneling machine is economical and practical.