Abstract: In order to solve a rapid reset and seal key technology problems during a mine shaft disaster period, the standby explosion- proof door and rapid reset t echnology of the mine ventilation shaft was researched and developed. With deformation simulation and impact resistance test of the standby explosion- proof door, the results showed that the standby explosion- proof door could hold the max stress of 189 MPa and the max elastic deformation of 32. 2 mm. The designed standby explos ion- proof door system and the available explosion- proof door would be completely and mutually independent, could rapidly seal and cover the mine shaft head, could play a same function of the previous explosion- proof door and could have a normal ventilation and a reversed ventilation when a gas explosion occurred in the undergr ound mine. There was a moving air door in the standby explosion door system. When twice or more explosions occurred in the underground mine, the air door could be automatically opened and reset to ensure the normal ventilation during the mine disaster period.