Detachable formwork for concrete small-bore circular holes

A detachable formwork for concrete small-bore circular holes comprises panels. The panels are semi-circular tube bodies, the left and right sides on the inner wall of each panel are respectively connected with a chute, and a complete circular closed tube is formed by the two panels via an integral lifting die. In the integral lifting die, a lifting rod and a plurality of fixing components are arranged between a left caulking support and a right caulking support, the lifting rod is connected with the left caulking support and the right caulking support via the fixing components, fastening pins penetrate through the left caulking support, the right caulking support and the lifting rod, the panels are semi-circular PVC tubes, and lower ends of the left caulking support and the right caulking support are conical. The detachable formwork for concrete small-bore circular holes is convenient in mounting and dismounting, increases working efficiency, avoids tube blocking caused by slurry leakage, effectively guarante