Approach channel arrangement method combining water diversion and drainage channels with bottom permeable navigation wall

Abstract

The invention provides an approach channel arrangement method combining water diversion and drainage channels with a bottom permeable navigation wall, and belongs to the technical field of overall arrangement of navigation buildings. An approach channel combining the water diversion and drainage channels with the bottom permeable navigation wall is arranged in an entrance area of an upstream approach channel; the navigation wall is arranged between the approach channel and a main river channel in the direction of the approach channel, only the bottom of the navigation wall is provided with water permeable holes, and the upper portion of the navigation wall is of a solid structure; the water diversion and drainage channels are formed in a root platform of the navigation wall, namely an endplatform, close to one side of a ship lock, of the navigation wall; the water diversion and drainage channels need to be arranged at a certain angle relative to the route of the approach channel, andthe approach channel is connected with the main river channel; and gates are arranged on the water diversion and drainage channels. The approach channel arrangement method has the advantages that 1, the space of the approach channel of the ship lock is not additionally occupied, the newly-added work amount is small, and obvious economic efficiency is achieved; and 2, the navigation water flow condition of the entrance area of the approach channel of a large-flow large-curvature bent river reach is obviously improved.

Description

technical field [0001] The invention proposes a method for arranging an approach channel of a ship lock, in particular a method for arranging an approach channel in which a water diversion channel is combined with a bottom-permeable navigation wall, and belongs to the technical field of overall arrangement of navigable buildings. Background technique [0002] The upper and lower reaches of the lock are connected to the main river through the approach channel and the gate area, so the navigable water flow conditions in the gate area of ​​the approach channel directly affect the safety of ships passing through the lock, and it is the throat for ships (teams) to enter and exit the lock. [0003] In order to ensure the smooth and stable water flow in the approach channel, 5.6.4 of the "General Design Code for Ship Locks" requires that "the angle between the center line of the approach channel, the gate area and the connecting section and the main flow direction of the river or th...

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Problems solved by technology

[0007] 1. When the flow rate is high, the angle between the centerline of the channel and the main flow is greater than 25°, and the curved river channel cannot solve the problem of navigation of the ship lock through navigation walls, diversion piers, etc., which reduces the navigation guarantee rate of the ship lock project

[0008] 2. When the flow is low, the water surface at different positions in the river often has a lateral water head difference, and the water level at the mainstream is often slightly higher than the water level of the approach channel, and the resulting lateral flow has an adverse effect on the water flow in the approach channel

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