Disclosed is an embanking arrangement for separating and protecting a first water volume from a second water volume, including a barrier connected to land and having an opening, a stationary basis extending across the opening, and a mobile port arrangement including a hull delimiting an inner tank. The embanking arrangement takes closed and open states respectively, wherein the inner tank of the port arrangement is at least partly filled with water and the hull of the port arrangement is standing on the basis when the embanking arrangement is in the closed state. The port arrangement is floating in the open state. The port arrangement includes at least a first opening connecting the inner tank and the first water volume, and including a controllable valve, and a pump connected with the second water volume to transport water from the first water volume to the second water volume.

Described herein is a floating flap gate including a gate leaf having a buoyancy forming portion, the gate leaf being configured to be raised due to buoyancy effect (e.g., from water), a bottom fitting mounted to a proximal end portion of the gate leaf, the bottom fitting having a convex circular arc-shaped surface across a width direction of the gate leaf, a plate member having a concave circular arc-shaped surface to be mated with the convex circular arc-shaped surface of the bottom fitting when the gate leaf is in a lowered state, wherein the concave circular arc-shaped surface is in contact with the convex circular arc-shaped surface when the gate leaf is raised.

Described herein is a floating flap gate including a gate leaf having a buoyancy forming portion, the gate leaf being configured to be raised due to buoyancy effect (e.g., from water), a bottom fitting mounted to a proximal end portion of the gate leaf, the bottom fitting having a convex circular arc-shaped surface across a width direction of the gate leaf, a plate member having a concave circular arc-shaped surface to be mated with the convex circular arc-shaped surface of the bottom fitting when the gate leaf is in a lowered state, wherein the concave circular arc-shaped surface is in contact with the convex circular arc-shaped surface when the gate leaf is raised.

A system and method are provided for presence based automatic operation of a marine barrier gate for protecting a secured area. Embodiments include a system having RFID sensors outside and inside the secured area, and proximal the gate. A controller verifies that a user is authorized to enter the secured area when one or more of the RFID sensors communicate with a user identification unit carried by the user; opens the gate or causes the gate to remain open when the user's authorization to enter the secured area is verified; tracks a location of the user identification unit using the RFID sensors while the gate is open and the user is transiting the gate; and closes the gate when the RFID sensors are no longer in communication with the user identification unit.

A system and method are provided for presence based automatic operation of a marine barrier gate for protecting a secured area. Embodiments include a system having RFID sensors outside and inside the secured area, and proximal the gate. A controller verifies that a user is authorized to enter the secured area when one or more of the RFID sensors communicate with a user identification unit carried by the user; opens the gate or causes the gate to remain open when the user's authorization to enter the secured area is verified; tracks a location of the user identification unit using the RFID sensors while the gate is open and the user is transiting the gate; and closes the gate when the RFID sensors are no longer in communication with the user identification unit.

A system is provided for automatic operation and status indication of a marine barrier gate. Embodiments include a system having a buoyant barrier gate that is movable between a closed position and an open position. An actuator moves the gate between the open and closed positions, and a sensor is operably connected to the actuator to generate data relating to a position of the barrier gate between the open and closed positions. A processor receives the data from the sensor and processes the data to move the gate between the open and closed positions, and detect the position of the gate. A human-machine interface is operably connected to the processor for communicating the detected position of the barrier gate to a user.

A system is provided for automatic operation and status indication of a marine barrier gate. Embodiments include a system having a buoyant barrier gate that is movable between a closed position and an open position. An actuator moves the gate between the open and closed positions, and a sensor is operably connected to the actuator to generate data relating to a position of the barrier gate between the open and closed positions. A processor receives the data from the sensor and processes the data to move the gate between the open and closed positions, and detect the position of the gate. A human-machine interface is operably connected to the processor for communicating the detected position of the barrier gate to a user.

An optical fiber sensing system according to the present disclosure includes an optical fiber (10) provided on a water discharge gate (30) of a reservoir or in a vicinity of the water discharge gate (30), a reception unit (21) configured to receive an optical signal including a vibration pattern from the optical fiber (10), and a detection unit (22) configured to detect whether an opening amount of the water discharge gate (30) is appropriate, based on a vibration pattern included in the optical signal.

An optical fiber sensing system according to the present disclosure includes an optical fiber (10) provided on a water discharge gate (30) of a reservoir or in a vicinity of the water discharge gate (30), a reception unit (21) configured to receive an optical signal including a vibration pattern from the optical fiber (10), and a detection unit (22) configured to detect whether an opening amount of the water discharge gate (30) is appropriate, based on a vibration pattern included in the optical signal.

A system is provided for automatic operation and status indication of a marine barrier gate. Embodiments include a system having a buoyant barrier gate that is movable between a closed position and an open position. An actuator moves the gate between the open and closed positions, and a sensor is operably connected to the actuator to generate data relating to a position of the barrier gate between the open and closed positions. A processor receives the data from the sensor and processes the data to move the gate between the open and closed positions, and detect the position of the gate. A human-machine interface is operably connected to the processor for communicating the detected position of the barrier gate to a user.