Gravel aggregate processing system for tunnel construction in plateau area

The utility model discloses a sandstone aggregate processing system for tunnel construction in a plateau area. The sandstone aggregate processing system comprises a feeding system; a crushing system; the crushing system comprises a first-stage crusher, a second-stage crusher and a third-stage crusher which are arranged in a crushing plant, and the feeding system conveys raw materials to the first-stage crusher; a screening system; the screening system comprises a first vibrating screen, a second vibrating screen and a third vibrating screen which are arranged in a screening plant; the primary crusher is connected to a first vibrating screen through a first conveyor; materials screened by the first vibrating screen are respectively conveyed to a primary crusher and a secondary crusher through a material conveyor; materials screened by the second vibrating screen are conveyed to a third-stage crusher through a material conveyor; and materials screened by the third vibrating screen are conveyed to a material sto