Integrated soil investigation works off marina east, Singapore

Abstract

As part of preliminary site investigation for the Marina East area, an extensive soil investigation works were planned. The project site is located in waters off Marina East, Singapore. The whole project site covered an area of around 600 Hectare. The water depth at the project area varies from 0 m CD to -23 m CD. The seabed within the project site is mainly covered by Kallang Formation and Old Alluvium. The seabed geology, in particular, the thickness and distribution of the soft sediment and soft clay within this project site, as well as the strength and stiffness characteristic of these soft deposit are the main concerns for any new development over this site. The knowledge of seabed geology and the engineering properties will help in deciding the appropriate facilities to be built or/and the appropriate method of construction. In view of the nature of the design requirements, an integrated soil investigation works has been designed. This includes 4 key components: seismic survey, CPT, borehole, and Large Diameter Borehole. Proper planning and management was significant for such a mega soil investigation project, which covers a huge project area and includes a few different types of work.