Gas extraction drilling and sealing device with reinforcing function

The invention relates to the technical field of gas extraction, in particular to a gas extraction drilling and sealing device with a reinforcing function, which comprises an extraction pipe placed in a drilling hole and an outer wall fixed on the extraction pipe, the first sealing block and the second sealing block are sequentially arranged in the direction from an orifice of a drill hole to the interior of the hole, a cavity is formed in the second sealing block, a reinforcing mechanism is arranged in the cavity, and the reinforcing mechanism is used for improving the friction force between the whole device and the inner wall of the drill hole; the reset mechanism is used for resetting the reinforcing mechanism, and the stabilizing mechanism is used for further fixing the extraction pipe. The extraction pipe is reinforced through the reinforcing mechanism, so that the extraction pipe is prevented from being ejected out of a drill hole during extraction operation, article loss and personnel injury are avoided