Underground pipeline sand hole plugging device for coal mine

The utility model relates to the technical field of underground pipeline sand hole plugging, in particular to an underground pipeline sand hole plugging device for a coal mine. The device comprises a clamp which has a releasing state and a pipeline hooping state. The device further comprises a sealing assembly and a springback assembly. The sealing assembly comprises a sealing gasket, the sealing gasket is provided with an arc-shaped inner surface capable of being matched with the pipeline, the sealing gasket is connected with the inner wall of the hoop through a springback assembly, and the springback assembly is detachably connected with the inner wall of the hoop. The springback assembly can give thrust to the sealing gasket so as to drive the sealing gasket to block a sand hole in the pipeline. The pipeline sand hole plugging device is simple in structure and convenient and fast to operate, the sand hole of the pipeline can be rapidly plugged through the thrust of the rebound assembly on the sealing gaske