Hydraulic flap sluice features in hydraulic steel weir: 1. Simplicity in design, free from complex transmission components; the sluice section has no parts requiring protection or repair, significantly improving the stability and reliability of the operation. Debris in the river channel is less likely to get caught, and if it does, there's ample space to accommodate it, making it easy to clear; 2. The structural steel flap sluice's water-blocking section is a single unit, without any joints.

The concrete structure gate is assembled from multiple precast components, thus the joints are prone to leakage; 2. The gate does not move laterally, addressing the issue of lateral leakage. When the lateral waterstop rubber is damaged by debris, it can be replaced while in the reservoir state without affecting normal power generation; 3. If the gate is caught by an object on one side, it does not undergo uneven distortion, thus preventing mutual interference between gates; This is due to the rigid and high-strength nature of the steel structure flap gate leaf.

Not as prone to cracking as reinforced concrete, it only experiences localized deformation upon impact from heavy objects, requiring minimal repairs and no transportation channel costs, with a quick recovery time.