Intro Geotech 05

Information about Intro Geotech 05

Published on February 12, 2008

Author: Hillary

Source: authorstream.com

Content

Geotechnical Engineering Slide Show:  Geotechnical Engineering Slide Show Dr. Adrian Rodriguez-Marek Spring 2005 Sources http://cee.engr.ucdavis.edu/faculty/boulanger/geo_photo_album/index.html http://www.geoengineer.org/gallery.html Slide2:  Soil Compaction Slide3:  Soil Compaction Control of water content of soil is essential for achieving good compaction Slide4:  Compaction at Los Vaqueros Dam, CA. The different colored soils correspond to the upstream shell (left side), core (darkest), filter, and drain zone (lightest), and downstream shell. Soil Compaction Slide5:  Compaction Equipment Slide6:  Deep Dynamic Compaction When compaction must be achieved at larger depths, surface compaction may not work. Natural soil deposits and poor, heterogeneous fills can be densified by dropping large weights from great heights repeatedly on the ground surface. Slide7:  What happens with poor compaction? The upstream slope of the Lower San Fernando Dam, in California, failed due to liquefaction during the 1971 San Fernando earthquake. The dam was constructed by "hydraulic filling," which involves mixing the fill soil with a large amount of water, transporting it to the dam site by pipeline, depositing the soil and water on the embankment in stages, and allowing the excess water to drain away. The fill that remains is loose, and is subject to liquefaction as the result of earthquake shaking. Slide8:  What happens with poor compaction? Slide in San Luis Dam, CA Slide9:  Consolidation and Settlement: Can we predict this? Slide10:  Soil strength Small slide in a highway cut Slide11:  Soil strength Slide in Olympia, WA, due to liquefaction of soil during the 2001 Nisqually Earthquake. Slide12:  Construction of Drilled Shafts Slide13:  Excavations in urban environments

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