How does a Canal Lock Work, Panama Locks Animation, connecting the Atlantic to the Pacific Ocean, Part 2
Video description of the workings of a Canal Locks.
How a conventional lock operates for a ship heading upstream:
The ship enters the lock at the lower level.
The lock gates and lower sluices close, making the lock chamber watertight.
The upper sluices are then opened, allowing the water to enter the lock by gravity and raise the boat.
When the water level in the lock is the same as that in the upstream portion of the canal, the upper gates are opened and the boat continues its journey upstream.
For ships heading downstream, the operation is reversed:
The ship enters the lock at the upper level.
The upper lock gates and sluices are closed to make the lock chamber watertight.
The lower sluices are then opened, allowing the water that is above the level of the lower water level to flow out.
When the water level is the same on both sides of the lower gates, they are opened and the boat continues on its way downstream.
How do canal locks work?
Since antiquity, rivers have been used to transport goods, but gaps in the network forced overland transport for part of the journey. Seeing as trading routes and crossroads were of economic importance for the region, systems of navigable waterways, including canals, began to be created.
Locks were built to enable the canals to cross the hills which separated the various river basins. The frequency of the locks depended on the gradient to be climbed.
For a boat to go up through a canal lock, the following sequence occurs:
The bottom sluices to the lock are opened to allow the lock to drain
The lower gates can then be opened
With the gates opened, the boat can enter the lock
The lower gates and bottom sluice are closed
The top sluices are then opened so that the water level rises in the lock, floating the boat up to the next level
The top gates can now be opened
The boat is then free to exit the lock on the new level. To descend the canal lock, the reverse happens. The lock is filled (if it is not already), the boat enters the lock which then drains, allowing the boat to exit on the lower level.
License: Creative Commons Attribution license (reuse allowed by @practical engineering.
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