Roadway supporting device

The utility model belongs to the technical field of supporting devices, and particularly relates to a roadway supporting device which comprises a front side supporting mechanism and a rear side supporting mechanism, the front side supporting mechanism and the rear side supporting mechanism both comprise a left side bottom plate and a right side bottom plate, L-shaped plates are arranged on the left side of the left side bottom plate and the right side of the right side bottom plate, and lower supporting columns are installed at the tops of the L-shaped plates. An upper supporting column is inserted into the lower supporting column, a hydraulic shear fork telescopic device is connected between the lower supporting column of the front side supporting mechanism and the lower supporting column of the rear side supporting mechanism, mounting plates are arranged on the side face of the upper supporting column and the side face of the lower supporting column, and a second hydraulic rod is connected between the upper