Abstract: The dynamic cone penetration test (DCPT) is one of the conventional insitu test methods in the geotechnical engineering investigations. It is widely used both domestic and abroad. It uses a weight falling from a certain height to penetrate the standard sized cone tip into soils with a predefined depth. The blow counts that are required to reach the cone penetration depth are then recorded and used to characterize the engineering properties of subsurface soils. This paper summarizes the application of a heavy dynamic cone penetration in the investigation of cobble soils for the Jiajiang Airport project. The cobble soil stratigraphy and bearing resistance parameters were obtained from the DCPT. The results indicate that the DCPT method could be used in the exploration of cobble soils.

Key words: Heavy Dynamic Cone Penetration, Cobble Soils, Airport Engineering