river dike; riverbank protection; revetment
Refers to structures built along rivers or coasts to prevent erosion and flooding. Often used in civil engineering and disaster prevention contexts.
Construction work on the riverbank protection for this river is scheduled to start next month.
Part of the revetment collapsed due to the typhoon.
The city announced a plan to build up revetment along this stretch of the river.
Part of the revetment collapsed due to the heavy rain.
防波堤 is a breakwater built out into the sea to block waves, whereas 護岸 is the protective lining along the bank itself, more often used for rivers as well as coasts.
土手 is a simple earthen bank or embankment along a river, while 護岸 implies an engineered protective structure (concrete, stone, etc.) reinforcing that bank.
seawall construction; levee protection works; bank protection work
Compound of 護 (protect) and 岸 (shore, bank). The reading is on'yomi.
Work is underway to reinforce the revetment as a measure against typhoons.