Wetting Deformation of Core-Wall Rockfill Dams
Publication: International Journal of Geomechanics
Volume 19, Issue 8
Abstract
In this study, a new wetting deformation simulation method for core-wall rockfill dams is proposed based on a wetting model that considers the upstream damming rockfill as softening materials when they are immersed and saturated. In this simulation process, as the water level in the reservoir rises, the calculation of dam wetting deformation is realized by gradually reducing the deformation modulus of the rockfill materials. To verify the method’s reliability, the collapse settlement caused by the wetting deformation of the Guanyinyan rockfill dam during impoundment is numerically simulated, and the results show that the calculated wetting deformations agree well with the measured ones. The wetting of upstream rockfill materials would cause an adverse deformation trend, which may lead to crack occurrence at the crest and on the upstream slope.
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Acknowledgments
This research was supported by the National Natural science Foundation of China (Grant 51379029).
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Information & Authors
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Published In
International Journal of Geomechanics
Volume 19 • Issue 8 • August 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Jul 5, 2018
Accepted: Jan 8, 2019
Published online: May 17, 2019
Published in print: Aug 1, 2019
Discussion open until: Oct 17, 2019
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