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Deep enclosures versus pumping to reduce settlements during shaft excavations

Author
Pujades, E.; Vazquez-Suñe, E.; Carrera, J.; Vilarrasa, V.; De Simone, S.; Jurado, A.; Ledesma, A.; Ramos, G.; Lloret, A.
Type of activity
Journal article
Journal
Engineering geology
Date of publication
2014-02-04
Volume
169
First page
100
Last page
111
DOI
https://doi.org/10.1016/j.enggeo.2013.11.017 Open in new window
Repository
http://hdl.handle.net/2117/23559 Open in new window
URL
http://www.sciencedirect.com/science/article/pii/S0013795213003359 Open in new window
Abstract
Deep excavations in aquifers may be constructed by combining pumping with the cut and cover method. The enclosures are often deepened more than structurally needed, in order to diminish the risk of heave or fluidisation inside the excavation, and to reduce pumping rates and the associated settlements outside jet-grouting piles are sometimes adopted for lengthening. We analysed the water-proofing efficiency of jet-grouting and the need for water isolation in preconsolidated sediments. We used dat...
Citation
Pujades, E. [et al.]. Deep enclosures versus pumping to reduce settlements during shaft excavations. "Engineering geology", 04 Febrer 2014, vol. 169, p. 100-111.
Keywords
AQUIFER PARAMETERS, CONSTRUCTION, DESIGN, DIAPHRAGM WALLS, Dewatering, Diaphragm walls, Excavation, GROUNDWATER, JET, Jet-grouting, SALINE MEDIA, SOFT SOIL, STEADY-STATE CONDITIONS, Settlement, Shaft, TRANSIENT
Group of research
EC - Construction Engineering
GHS - Hydrogeology Group
MSR - Soil and Rock Mechanics

Participants