Abstract
This study focuses on the coupling effect of the imposed hydraulic gradient and surcharge pressure on fine-particle loss and skeleton deformation during suffusion. A series of suffusion tests were conducted on an internally unstable sandy gravel under four different hydraulic gradients and three surcharge pressures using a large-scale high-pressure erosion apparatus. The total eroded mass, erosion rate and skeleton deformation were comparatively analysed, and the mesoscopic mechanism was discussed preliminarily. The results showed that the hydraulic gradient affected the erosion process not only in terms of the total eroded mass but also the developing pattern and duration of erosion. Surcharge pressure showed an inhibitory effect on fine-particle erosion, whereas a promoting effect on the skeleton deformation. For internally unstable soils, hydraulic gradient and surcharge pressure might have a considerable coupling effect on the fines eroded ratio and its induced strain.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
