Drilling machine for geotechnical engineering investigation

The invention relates to a drilling machine for geotechnical engineering investigation, and belongs to the technical field of geotechnical engineering equipment, the drilling machine comprises a base, wheels are mounted on the base, a supporting plate is arranged above the base, a drilling assembly is arranged on the supporting plate, a plurality of supporting columns are arranged between the supporting plate and the base, and a plurality of through holes are formed in the base; each supporting column corresponds to one through hole, a plurality of electric push rods are arranged between the supporting plate and the base, piston rods of the electric push rods are fixed to the supporting plate, and the ends, away from the supporting plate, of the electric push rods are fixed to the base. A containing groove is formed in one side wall of the supporting column, the containing groove penetrates through the bottom of the supporting column, a supporting block is arranged in the containing groove, and the bottom of