Deep Jet-Grouted Cut-Offs in Riverine Alluvia for Ertan Cofferdams

Autor:	P. Groppo Sembenelli, G. Sembenelli
Rok vydání:	1999
Předmět:	Geotechnical engineering Alluvium Excavation Arch Double curvature Geotechnical Engineering and Engineering Geology Cofferdam Dewatering Geology General Environmental Science Geological structure
Zdroj:	Journal of Geotechnical and Geoenvironmental Engineering. 125:142-153
ISSN:	1943-5606 1090-0241
DOI:	10.1061/(asce)1090-0241(1999)125:2(142)
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0ecc627b3e6a5ad0faf19c3f8d495e8d https://doi.org/10.1061/(asce)1090-0241(1999)125:2(142) Zobrazit plný text záznamu Plný text ve formátu PDF