| 摘要 |
PROBLEM TO BE SOLVED: To ensure a field of view of a diver attending to riprap leveling work.SOLUTION: In an underwater foundation riprap leveling supporting system 10 produced by machining an angular steel pipe that is used widely as a leveling scaler, seawater supplied from a jep pump 18 mounted on a work ship 12 is jetted out of jet holes 34 provided on a side face, contaminants floating within a water area of riprap leveling work are diffused, a turbidity within the ware area of the work is reduced, and the water area of the work near the hands of or around divers 26 who carry or replace riprap 24 is illuminated light by LED lights 22. |
