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The principle of operating a lock is simple. For instance, if a boat travelling downstream finds the lock already full of water: The entrance gates are opened and the boat moves in. The entrance gates are closed. A valve is opened, this lowers the boat by draining water from the chamber. The exit gates are opened and the boat moves out. [11]
A caisson is a form of lock gate. It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock to close it, or pumped dry to float it and allow it to be towed clear of the dock. Graving docks at Birkenhead, closed by a variety of ship caissons and floating (sliding) caissons.
Caisson lock. The caisson lock is a type of canal lock in which a narrowboat is floated into a sealed watertight box and raised or lowered between two different canal water levels. It was invented in the late 18th century as a solution to the problem posed by the excessive demand for water when conventional locks were used to raise and lower ...
The original gate machinery consisted of a huge drive wheel, powered by an electric motor, to which was attached a connecting rod, which in turn attached to the middle of the gate. [8] The gates are hollow and buoyant, much like the hull of a ship, and are so well balanced that two 19 kW (25 hp) motors are enough to move each gate leaf.
A sluice gate. A sluice (/ s l u s / SLOOS) is a water channel containing a sluice gate, a type of lock to manage the water flow and water level. It can also be an open channel which processes material, such as a river sluice used in gold prospecting or fossicking.
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The increasing frequency of this type of event caused considerable damage and prompted projects such as MOSE. MOSE (Italian: Modulo Sperimentale Elettromeccanico, lit. 'Experimental Electromechanical Module') is a project intended to protect the city of Venice, Italy, and the Venetian Lagoon from flooding. The project is an integrated system ...
Courtesy of Raven Gates/Instagram Bachelor in Paradise alum Raven Gates is opening up about adjusting to have two children, admitting her husband, Adam Gottschalk, is having a “hard” time.
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