Safety protection device for gas exploitation

The invention discloses a safety protection device for gas exploitation. The safety protection device comprises two groups of air door frames arranged in a roadway, wherein a first reverse air door and a first forward air door are arranged in one group of air door frames from left to right, a second reverse air door and a second forward air door are arranged in the other group of air door frames from left to right, and the first reverse air door and the second reverse air door are in a normally open state. According to the safety protection device for gas exploitation, through the structural design of a first locking mechanism, a second locking mechanism and a linkage device between the forward air doors and the reverse air doors, in a normal state, when one forward air door is opened, theother forward air door can be locked without a gap, so that the protection and sealing effects of the forward air doors are good, and a tongue plate is controlled to lock the forward air doors through negative pressure. Comp