Anti-settlement structure for tunnel bottom of open cut tunnel

The utility model discloses an open cut tunnel bottom anti-sedimentation structure which comprises a tunnel body, a tunnel bottom plate is arranged at the bottom of the tunnel body, and a drainage pile is arranged at the bottom of the tunnel bottom plate. A soil layer is formed outside the tunnel bottom plate; the bottoms of the drainage piles extend into the soil layer, and the tops of the drainage piles extend into the tunnel bottom plate. By arranging the drainage piles, underground water can be continuously pumped and drained in the construction process of the tunnel pile structure and the tunnel theme structure, so that the tunnel bottom soil layer is continuously drained and consolidated, the bearing capacity of the tunnel bottom soil layer is increased, and the situation that the safety of the tunnel is affected due to uneven settlement of the tunnel is prevented; the drainage piles are communicated with the tunnel bottom plate structure, and in the operation period after the tunnel is built, if the ra