Tunnel structure capable of improving ship trafficability

The invention discloses a tunnel structure capable of improving the passing capacity of a ship, which comprises an upstream tunnel and a downstream tunnel, and a communicating hole positioned at the bottom of the upstream tunnel and the downstream tunnel is arranged between the upstream tunnel and the downstream tunnel; the optimal distance range of the two adjacent communicating holes is +/-10% of the design representative ship type length; the top elevation of the communicating hole is not higher than the ship draft. The method has the advantages that (1) the cross-sectional area of the communicating hole is very small, the construction is simple, and the increased cost is very small compared with the expansion of the cross-sectional area of the navigable tunnel; (2) the transverse flow generated by the communication hole cannot influence the safe navigation of the ship; (3) the sailing resistance of ships in the tunnel can be effectively reduced, the fuel oil of the ships is saved, and good energy-saving a