Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/74096
Title: Challenges in offshore geotechnics in Southeast Asia
Authors: Leung, C.F. 
Issue Date: 2005
Source: Leung, C.F. (2005). Challenges in offshore geotechnics in Southeast Asia. Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment 1 : 303-311. ScholarBank@NUS Repository.
Abstract: The first part of this paper describes the offshore oil and gas exploration activities in Southeast Asia. Typical subsurface conditions in the Sunda Shelf in Southeast Asia are highlighted and hazards in oil and gas exploration caused by the peculiar soil profile and parameters in the region are identified. These hazards include the punch through failure of spudcan supporting mobile jack-up rigs during installation and difficulties in removing the spudcans during extraction. The second part of this paper describes the results of centrifuge model study carried out at the National University of Singapore on punch through hazards during installation of spudcans in layered soils and performance of spudcans during extraction. The study on spudcan punch through reveals that a plug consisting of the overlying stiff soils develops when a spudcan punches through the underlying soft clay layer. Owing to such failure mechanism, conventional bearing capacity theories are not applicable to predict the spudcan punch through phenomenon. The study on spudcan extraction reveals that the suction developed at the spudcan base is the major component in the breakout resistance of spudcan with long operation periods.
Source Title: Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering: Geotechnology in Harmony with the Global Environment
URI: http://scholarbank.nus.edu.sg/handle/10635/74096
ISBN: 9059660285
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

43
checked on Dec 9, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.