Tunnel water-gas separation device and gas emission system

The invention relates to a tunnel water-gas separation device and a gas emission system. According to the tunnel water-gas separation device, the water-gas separation pool and the partition plate are adopted, gas is difficult to dissolve in water, cannot pass through the partition plate along with water, finally stays in the gas-water separation chamber and is discharged through the first discharge pipe, and water can reach the drainage separation chamber from the lower portion of the partition plate and then is discharged from the drainage channel on the other side, so that water-gas separation is formed; the structure is simple, construction is convenient, and cost is lower. According to the gas discharge system, the tunnel water-gas separation device is arranged outside the tunnel hole, the first discharge pipe is arranged to discharge gas at the lower end of the tunnel, the end wall is arranged to block the end of the tunnel high-end hole of the central ditch, and the second discharge pipe is arranged to