Lateral pile-plank structure suitable for rocky abrupt-slope embankment

The invention discloses a lateral pile-plank structure suitable for a rocky abrupt-slope embankment. According to the lateral pile-plank structure, reliable retaining is provided for an abrupt-slope road in a mountain area, the transverse stiffness coordination of the road bed is effectively controlled, non-uniform settlement is avoided, the operation comfortableness of an expressway or high-speed railway is improved and safety accidents are avoided. The lateral pile-plank structure comprises cantilever piles (3), reinforced concrete slabs (2) and fills, wherein the cantilever piles (3) are arranged on the lower side of the abrupt-slope embankment, in the extending direction of the embankment, at intervals; the lower parts of the cantilever piles (3) are anchored in a rock body; the reinforced concrete slabs (2) are laid below a pavement structural layer (1); the outer ends of the reinforced concrete slabs (2) are fixedly connected with the tops of the cantilever piles (3); the fills are placed at the rear parts of the cantilever piles (3); geogrids (4) are vertically laid in the fills in a layering manner.