Deformation Characteristics and Control Techniques at the Shiziping Earth Core Rockfill Dam
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 2
Abstract
This paper presents a representative engineering case, the Shiziping dam, to illustrate deformation controls of highrise earth core rockfill dams in seismic areas. Techniques for controlling dam deformation, including structure design, foundation treatment, material properties, and construction are discussed in detail. Field monitoring data and deformation characteristics were reviewed to verify control effectiveness. The deformation during the construction and initial impoundment period accounted for 70–85% of the overall deformation; the deformation was primarily influenced by weight, wetting behavior, and creep. Creep stabilized 7 or 8 months after the completion of construction. The total deformation is caused by fill and foundation materials. Uneven deformation is mainly caused by foundation shape, foundation compression symmetry, and uniformity of fill materials. Uneven deformation may be improved by using reasonable dam zone and fill material designs and appropriately increasing core wall compaction.
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Acknowledgments
The authors would like to thank the China Huadian Corporation Sichuan Company for supporting the research funding and the dam construction monitoring data, and the Chengdu Hydroelectric Investigation and Design Institute for providing the design data.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: May 12, 2014
Accepted: Jun 15, 2015
Published online: Aug 5, 2015
Discussion open until: Jan 5, 2016
Published in print: Feb 1, 2016
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