Geotechnical investigation of the proposed transhipment in the Great Nicobar Island

International Journal of Civil Engineering

© 2016 by SSRG - IJCE Journal

Volume 3 Issue 1

Year of Publication : 2016

Authors : M Ravichandran, A G Sharanya, Dr.D.Suji

10.14445/23488352/IJCE-V3I1P109

How to Cite?

M Ravichandran, A G Sharanya, Dr.D.Suji, "Geotechnical investigation of the proposed transhipment in the Great Nicobar Island," SSRG International Journal of Civil Engineering, vol. 3,  no. 1, pp. 63-67, 2016. Crossref, https://doi.org/10.14445/23488352/IJCE-V3I1P109

Abstract:

World over containers are being handled by a system of transhipment i.e. large container carriers are unloading the containers in a particular port (Transhipment Port) from where the containers are further shipped to the final destination ports by feeder vessels. Large containers carriers (mother ships) with deep draft are unable to call on smaller ports and therefore, take equatorial shipping lines (East to west or vice versa) and call on such transhipment ports and leave the containers to be picked up by feeder vessels to the smaller ports. The containers to Indian Sub-Continent ports are presently transhipped from Dubai, Colombo and Singapore. At present 65% of the 1,720,000 containers received at Singapore port are further transhipped to the ports in the Asian Region including Indian Ports. The advantage of Colombo and Singapore for container traffic is their geographic locations adjacent to the equatorial shipping line stretching from Gulf/Red Sea to the South - East China Sea. The southernmost point of India, the Great Nicobar Island, (GNI) enjoys the same geographical advantage as being extremely close to this equatorial shipping line used by large container carriers (mother ships). The most obvious benefit is the income generated from operations of a transhipment port because of the double handling of containers. More importantly, transhipment ports provide local importers and exporters direct access to line haul service, reducing transportation time (and possibly freight rates) to and from overseas markets. Reduced transport time directly impacts the competitiveness of exporters and the cost of imports, in turn creating jobs and income throughout the economy. Many developing countries have created free trade zones in combination with the hub port as engines for economic growth. For development of transhipment port the adequate geotechnical investigations has been carried out in Great Nicobar Island. Based on the field and laboratory investigations of the soil sample collected at each borehole it is found that the subsurface profile consists of deposits of sandy silt, sandy clay, cemented sand & soft rock generally varying with depth were noticed. The boreholes were terminated at a maximum depth of 28.80m below sea bed level. Bored cast insitu concrete piles resting on very hard stratum having SPT >100 with varying lengths in the range of 24.50m to 34.00m at different borehole locations is recommended to enable the berthing of large inter- continental vessels.

Keywords:

Berths, Bored cast in-situ concrete piles, Borehole, SPT N-value, Subsurface profile, The Great Nicobar Island, Transhipment port.

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