In-situ repairing method for cement concrete pavement surface layer strip-shaped broken zone

The invention discloses an in-situ repairing method for a strip-shaped crushed zone of a cement concrete pavement surface layer. A conversion platform and a cutting machine on the conversion platform can cut the concrete pavement layer under the action of an inclined position control body; a residue blocking filter plate and a water storage cavity are arranged in the backfilling area, and a spray head connecting pipe, an inclined spray head and a transverse spray head are arranged on the water storage cavity; a cavity pressurizing pipe is arranged on the water storage cavity; the active biological filling body in the reinforcing vertical pipe can permeate into the first filling body to form a biological reinforcing body, and the top of the first filling body is provided with a back pressure supporting rib and a post grouting pipe; inclined supporting piles and transverse tie bars are evenly arranged in the longitudinal direction of the backfill area at intervals; the side wall of the backfill area on the uppe