Explosion hole plugging device and using method thereof

The invention discloses an explosion hole plugging device and a using method thereof. The explosion hole plugging device comprises an explosion device, an expansion pipe, a pressure transmitting medium and a friction layer. The expansion pipe expands in the radial direction under the action of the explosion device and maintains the expansion state. The pressure transmitting medium transmits the radial expansion force of the expansion pipe to the friction layer; the friction layer is tightly attached to the hole wall of the blast hole under the action of radial force, so that the friction force between the explosion hole plugging device and the hole wall of the blast hole is increased, and the purpose of enhancing the hole plugging effect is achieved. The explosion hole plugging device can be used for underground blasting engineering such as tunnels and roadways, the hole plugging effect is good, operation is easy, the slotting effect of slotting holes can be effectively improved, and then the overall blasting