Slope Stability At The Juncture Of Dredged Berth Pocket & Reclaimed Earth Embankment During Turbulence Caused by Rotation of Ship’s Propeller

Abstract

For accepting vessels with large drafted deepening of the berth pocket at any jetty is necessary by dredging. During berthing of ships, the bed soil particles in berth pocket gets eroded due to critical velocity, due to turbulence of the sea water in the pocket, caused by propeller’s motion and also due to eddies formed during trimming of vessel. Such disturbances in bed soil particles and the energy in the water can endanger the berm slope due to splashing during run up and run down. For taking care of the stability of the slope connecting the dredged berth pocket and that of the reclaimed mass of embankment the concerned safety factor plays an critical role at the juncture of the reclamation and the dredging . At the juncture of reclaimed soil mass and dredged pocket the criticality of submerged slope stability during hydraulic turbulence generated by propeller’s movement during berthing of ship is discussed in this paper, with results from a large container terminal project at border of Arabian sea.