Transportation assembly line capable of rapidly discharging slag in tunnel

The utility model relates to the technical field of muck conveying equipment, in particular to a transportation assembly line capable of rapidly discharging muck in a tunnel, which comprises a rack and a muck conveying system, the muck conveying system comprises a lifting feeding mechanism, a crushing mechanism, a transverse long-distance conveying mechanism and a discharging mechanism; the transverse long-distance conveying mechanism comprises a first conveying roller and a first conveying belt, the first conveying roller is horizontally installed on the rack, the first conveying belt is arranged on the first conveying roller in a sleeving mode, and the end of the first conveying roller is connected with the driving end of a first driving motor arranged on the rack; the crushing mechanism comprises a protection box, a crushing roller, a feeding hopper and a discharging hopper, the discharging mechanism comprises a spiral feeder and an adjustable supporting assembly, the structure is simple, muck is lifted, c