Experimental Investigation on the Evolution of Mechanical Properties of Accumulation Deposits Under Fluctuating Water Levels
Year: 2026
Type: article
Abstract: Reservoir water-level fluctuations periodically alter the physical and mechanical properties of accumulation deposits in the bank slope zone, potentially triggering geological hazards such as collapses and landslides. This study developed an original laboratory mechanical testing system to systematically investigate the evolution of deformation and shear strength parameters in these accumulation deposits throughout the reservoir operation period. Tests conducted on the accumulation deposits in the Baijiabao bank slope demonstrate that under the coupled effects of anisotropic stress and cyclic wet–dry conditions, the compression modulus, cohesion, and internal friction angle decrease significantly, by 10.6%, 11.4%, and 13.2%, respectively. As the number of wet–dry cycles increases, the rate of reduction in these parameters gradually diminishes. Between the second and fourth cycles, the decreases in compression modulus, cohesion, and internal friction angle were 9.7%, 8.6%, and 6.9%, respectively. Beyond the eighth cycle, the values of these parameters stabilize with minimal further change.
Source: Eng—Advances in Engineering
DOI: 10.3390/eng7020091
Authors: Zhidan Liu, Zhouping Duan, Zhenhua Zhang, Guang Liu, Rui Shao
Institution: Hefei University of Technology
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,448
Award: G604469299
OpenAlex ID: W7128947456
FWCI:
Cites:
Cited by:
Related to: