Shallow-buried tunnel zero-slope hidden hole open construction method

The invention discloses a shallow-buried tunnel zero-slope hidden hole open-cut construction method, which comprises the following steps of: before the shallow-buried tunnel is excavated, driving a vertical support component from the original ground, and anchoring the vertical support component into a deeper stratum; and by arranging the ground anchors and the prestressed inhaul cables for tensioning, an integral stress system is formed, and strong soil pressure on the two sides of the tunnel can be resisted. Therefore, large-range slope excavation construction is avoided, the land acquisition area and original ground vegetation damage are reduced to the maximum extent, meanwhile, the earthwork excavation amount is reduced, and the earthwork excavation safety in the tunnel range is guaranteed. Compared with traditional tunnel hidden hole excavation, complex in-hole construction is not needed, large machinery is directly adopted for open excavation, the construction speed and efficiency are extremely high, the