@Article{cmes.2022.020335,
AUTHOR = {Guodong Liu, Zhijun Zhou, Shiqiang Xu, Wenjing Mi},
TITLE = {Hysteresis of Dam Slope Safety Factor under Water Level Fluctuations Based on the LEM Coupled with FEM Method},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {133},
YEAR = {2022},
NUMBER = {2},
PAGES = {351--375},
URL = {http://www.techscience.com/CMES/v133n2/48963},
ISSN = {1526-1506},
ABSTRACT = {Water level variations have caused numerous dam slope collapse disasters around the world, illustrating the large
influence of water level fluctuations on dam slopes. The required indoor tests were conducted and a numerical
model of an actual earth-filled dam was constructed to investigate the influences of the water level fluctuation rate
and the hysteresis of the soil–water characteristic curve (SWCC) on the stability of the upstream dam slope. The
results revealed that the free surface in the dam body for the desorption SWCC during water level fluctuations was
higher than that for the adsorption SWCC, which would be more evident at higher water levels. The safety factor
of the upstream dam slope initially decreased and then increased for the most dangerous water level as the water
level rose and fell. The water level fluctuation rate mainly influenced the initial section of the safety factor variation
curve, while the SWCC hysteresis mainly affected the minimum safety factor of the water level fluctuations. The
desorption SWCC is suggested for engineering design. Furthermore, a quick prediction method is proposed to
estimate the safety factor of upstream dam slopes with identical structures.},
DOI = {10.32604/cmes.2022.020335}
}