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

Authors

  • SUDIPTA CHAKRABORTY Chief Of Infrastructure Division , Haldia Dock Complex , Kolkata Port Trust (Retired), Ministry of Shipping, Govt. Of India . Email:diptasu[at]gmail[dot]com
  • A.R. Kambekar
  • Arnab Sarma Sarma

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.

Author Biography

  • SUDIPTA CHAKRABORTY, Chief Of Infrastructure Division , Haldia Dock Complex , Kolkata Port Trust (Retired), Ministry of Shipping, Govt. Of India . Email:diptasu[at]gmail[dot]com
    Born on December 05,1957 at Shalboni in West Midnapur District in the state of West Bengal, India, Sudipta Chakraborty had his schooling in Midnapur Collegiate School and had his graduation in Civil Engineering from Indian Institute of Engineering Science and Technology, Shibpore (Erstwhile known as Bengal Engineering College) in 1978. He had M. Tech in Aeronautical Engineering from Indian Institute of Technology, Kharagpur. He is an alumnus of International Institute of Insfrastructure, Hydraulic and Environmental Engineering, Delft, The Netherlands, a Fellow of Institution of Engineers (India) and a Life Member Of PIANC, Belgium. Sudipta had worked for 26 Years at Haldia, the deep-drafted satellite port, in India’s only Riverine Port of Kolkata. During his professional journey through the career ladder upto the position of Head of the Infrastructure Division, over the years he was deeply associated with various capital development projects of Haldia Port. After parting from port services in 2008 he later worked in various reputed construction and consultancy firms. He was associated with very large marine infrastructure works like Dredging of 33KM long channel of Jawaharlal Nehru Port Trust and Mumbai Harbour, Reclamation of 90 Hectare of land from Arabian Sea for the Container Terminal of ‘Port of Singapore Authority’ within Jawaharlal Nehru Port Trust, Mumbai, Multimodal Inland Water Terminal at River Ganges at Varanasi etc. Sudipta has a few monographs published in International Journals from London, Denmark, Singapore etc. He is a reviewer of papers for International Conference on Coasts & Ports, Australia. Journal Of Coastal Research, USA. Presently Sudipta is a researcher in Coastal Engineering. He has authored a book 'Sea Level Rise : Are we ready?' (https://www.amazon.in/Sea-Level-Rise-Are-Ready-ebook/dp/B08KYKH2NB)

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Published

2023-06-30

Issue

Vol. 10 No. 1 (2023)

Section

Research Article

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