Lift gate

A stoplog gate is a planar water-retaining structure composed of multiple independent stoplog planks stacked horizontally, primarily used for temporary water retention or equipment maintenance in hydraulic engineering. The following are its key points:
Structural Features
A stoplog gate consists of multiple stoplog planks, each equipped with protrusions, grooves, and rubber water seals, enabling opening and closing functions via gate slots. Traditional structures rely on the self-weight of the planks and rubber water seals for sealing, resulting in poor integrity and significant leakage (approximately 1.5-5 L/(min·m)). An improved design with pre-tightening devices reduces misalignment through slide positioning and close-contact mechanisms, lowering leakage to 0.3-1.5 L/(min·m). ‌
Materials and Applications
‌Materials‌: Stainless steel (corrosion-resistant), carbon steel (versatile), and aluminum alloy (lightweight) are the main choices. ‌
Applications‌:
Temporary water retention: Such as during hydraulic maintenance periods or channel blocking in wastewater treatment plants.
Permanent water retention: In 2024, patented technology enabled the permanent application of double-layer stoplog structures in reservoir hubs, eliminating the need for pumping and drainage during construction. ‌