The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a dam whose stability is significantly ensured by deeply anchoring the structure in a foundation rock (a dam with a deep abutment) or by anchoring the structure in the soil of a nonrock foundation (pile or grooved-pile dams).
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.