Bottom structure of harbor and method of preventing bottom burying of harbor

摘要

An object of the present invention is to provide a bottom structure of a port and a method of preventing bottom sinking of a port, which can suppress the change of water depth due to the prescribed water area being buried by sediment and change the maintenance interval. . A groove-like deposit trapping portion 122 is continuously formed along the boundary BL with the adjacent water area at the periphery of the anchorage 12 which is the specified water area, and in which the sediment is buried deeper than the water bottom inside the anchor area 12. Provided in Sediments such as sand and floating mud that flowed from the channel 14 are captured by the sediment capture unit 122 and do not flow into the inside of the anchorage 12, thus preventing the water depth of the anchorage 12 from changing, and the construction of maintenance dredging work It is possible to increase the interval.