Airflow fence structure suitable for downstream bend of approach channel and construction method of airflow fence structure

Abstract

The invention relates to an airflow fence structure suitable for a downstream bend of an approach channel and a construction method of the airflow fence structure. The airflow fence structure is formed by connecting a plurality of airflow fence units; one airflow fence unit comprises a bottom pier, a sand separation pier and a drainage fence successively from top to bottom; the bottom pier is a rectangular structure, the sand separation pier is arranged on the bottom pier, the vertical section of the sand separation pier is a right angle trapezoid, the side, close to the approach channel, of the sand separation pier is a right angle, and the side, near a river channel, of the sand separation pier is an oblique plane; and the drainage fence is arranged on the sand separation pier. The airflow fence structure is suitable for terrain where the approach channel of ship lock downstream has a sharp bend and the outer side of the approach channel has shoals, the elevation is significantly higher than the approach channel, and the amount of shoal excavation is too large or excavation is not convenient, and can effectively solve the engineering problems caused by such special terrain. The function of an airflow fence is to avoid hazards of oblique flow and sediment transport, to ensure normal navigation of the approach channel of a ship lock, to ensure normal upstream water level and flow pattern, to reduce the construction difficulty, to lower the construction cost, and the airflow fence structure has good prospects of promotion and application.

Description

technical field [0001] The invention belongs to the field of ship lock approach channels, and in particular relates to a diversion grid structure and a construction method thereof for improving the navigation conditions downstream of the ship lock approach channel and the water flow conditions of the downstream channel of the ship lock. Background technique [0002] With the continuous improvement and improvement of people's living standards, the demand for energy has further increased, the volume of passenger and cargo transportation has increased rapidly year by year, and the constraints on resources and the environment have become increasingly severe. At present, my country's national conditions determine that the development of energy and transportation cannot be slowed down. Therefore, the contradiction between the development of transportation and the reduction of energy consumption and environmental pollution is becoming increasingly acute, which will inevitably lead t...

AI Technical Summary

Problems solved by technology

[0004] However, when there is a sharp bend in the river not far from the downstream of the building and shoals appear in the channel outside the approach channel, the middle elevation of the channel is higher than the approach channel, and a large amount of sediment is deposited at the bottom of the channel, the traditional method will not be able to solve this engineering problem

If the traditional guide wall is built, the downstream channel of the building will be backed up significantly, endangering the safety of buildings on both sides of the river; if the guide wall is not built, due to the erosion of the water flow, the sediment in the shoal will be brought into the approach channel, thereby blocking the approach channel, and even worse Seriously, the oblique flow formed by the sharp bends and shoals of the river will cause the ship to yaw, causing serious navigation safety accidents

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