The present invention relates to the technical field of caissons, and in particular to a
caisson sinking aid structure and a use process thereof, wherein the steel blade foot comprises a steel blade foot outer tube, a steel blade foot
tread surface and a steel blade foot reinforcing rib, wherein the upper portion of the steel blade foot outer tube is connected to the
caisson wall, the middle portion of the steel blade foot outer tube is connected to the steel blade foot
tread surface, the lower portion of the steel blade foot outer tube is connected to the steel blade foot reinforcing rib, the top surface of the steel blade foot
tread surface is connected to the
caisson wall, the bottom surface of the steel blade foot tread surface is connected to the steel blade foot reinforcing rib, and the bottom of the steel blade foot reinforcing rib is provided with a taper; a water jetting device, wherein the water jetting device comprises a plurality of high-pressure water pipes and a high-pressure water
nozzle, the high-pressure water pipes are connected to the high-pressure water
nozzle, the high-pressure water pipes are arranged along the inner wall of the well wall, the high-pressure water
nozzle is arranged between two steel blade foot reinforcing ribs, and the steel blade foot performs two operations during the sinking process of the caisson, namely, it can effectively
cut the soil and timely separate the soil inside and outside the caisson; and secondly, when the soil under the caisson blade foot is hollowed out, the soil outside the caisson is not easy to enter the caisson along the blade foot end surface.