Extra-long tunnel water burst prevention and control system and construction method thereof

The invention provides an extra-long tunnel water burst prevention and control system and a construction method thereof. The prevention and control system comprises a water retaining wall formed by concrete pouring, wherein the water retaining wall is arranged at the position away from the main tunnel face by a preset distance and completely attached to the circumferential side wall of a main tunnel; a water retaining wall foundation is formed at the bottom of the water retaining wall through pouring; a foundation trench for containing the water retaining wall foundation is dug in the bottom of a main tunnel foundation pit; the periphery of the water retaining wall is anchored into bed rock through mortar anchor rods; guide pipes are pre-buried in the water retaining wall and extend in the tunneling direction; the two ends of each guide pipe extend out of the water retaining wall; the guide pipes are arranged in a plum blossom shape; temporary drainage ditches are formed in the positions, close to the two sid