Deep jet-grouted cut-offs in riverine alluvia for Ertan cofferdams
Journal Article
·
· Journal of Geotechnical and Geoenvironmental Engineering
- SC-Sembenelli Consultants, Milano (Italy)
Constructing the 245-m-high, double curvature concrete arch Ertan Dam required two high cofferdams (the upstream one exceeding 60 m) and the removal of 40 m of alluvium from the riverbed. Full penetration and partial penetration cut-offs were created at Ertan with jet-grouting techniques. Dewatering between the cofferdams and behind the cut-offs was successful and was maintained for more than 2 years against 40--70 m of water heads. This paper describes in detail the design rationale and main features, as well as the construction methods of both cut-offs. The treatment by conventional grouting of the rock below the jet-grouted wall is also outlined.
- OSTI ID:
- 316384
- Journal Information:
- Journal of Geotechnical and Geoenvironmental Engineering, Journal Name: Journal of Geotechnical and Geoenvironmental Engineering Journal Issue: 2 Vol. 125; ISSN 1090-0241; ISSN JGGEFK
- Country of Publication:
- United States
- Language:
- English
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