Nearshore geotechnical investigation at Ponta Chugue (Guinea-Bissau). Comparison between CPTu, SPT and laboratory results
Nearshore geotechnical investigation at Ponta Chugue (Guinea-Bissau). Comparison between CPTu, SPT and laboratory results
A nearshore geotechnical investigation was conducted at Ponta Chugue (Guinea-Bissau) in the frame of the Farim Phosphate Project (FPP). The objective was to characterize the geotechnical conditions at the site and to provide a ground model for the design of the new marine facilities. The project area is located 18 km east of Bissau upstream river Geba, in a high-current area with water depths between 5 and 22 m. Field works were conducted from a 45 m length jack-up and included: rotary boreholes with SPT and think-walled Shelby tubes, and CPTu with dissipation tests. A laboratory campaign was also performed on soil and rocky samples. The investigation depth ranged between 29 and 55 m below riverbed. This paper presents a comparison of the results from different types of tests in terms of undrained shear strength and friction angle. The most suitable correlations for the site-specific conditions are defined.
Amadeu Deu; Ed Liegel; B. M. Summer
18th African Regional Conference on Soil Mechanics and Geotechnical Engineering (ARCSMGE2024)
Soil characterization
Contact Information
- Secretary General - Dr A M McNamara
- Email: [email protected]
- Phone: +44 20 7040 8154
- City, University of London
- Northampton Square
- London EC1V 0HB. United Kingdom