Analysis and application of in situ pore pressure measurements in marine sediments

1993 ◽  
Vol 98 (B5) ◽  
pp. 7921-7938 ◽  
Author(s):  
Weijiang W. Fang ◽  
Marcus G. Langseth ◽  
Peter J. Schultheiss
Keyword(s):  
Pore Pressure ◽  
Marine Sediments ◽  
Pressure Measurements

Parameters for the Design of Tailings Dams

1975 ◽  
Vol 12 (2) ◽  
pp. 235-261 ◽  
Author(s):  
Hari K. Mittal ◽  
Norbert R. Morgenstern
Keyword(s):  
Pore Pressure ◽  
Water Table ◽  
Laboratory Data ◽  
Poor Performance ◽  
Pressure Measurements ◽  
Liquefaction Potential ◽  
Tailings Dams ◽  
Infiltration Test

Tailings dams differ from conventional earthfill structures in that much more time is available to optimize design since their construction is extended over a longer period. Laboratory data are presented on a variety of tailings sands which indicate that they are relatively strong and incompressible. Poor performance is likely to result from inadequate seepage control and instability due to liquefaction. In order to take advantage of opportunities for ongoing design, in situ permeability and density monitoring is needed together with pore pressure measurements. An infiltration test for the determination of permeability above the water table is proposed. In situ density determinations are made by driving a nuclear probe into the sands. The latter technique offers considerable promise for evaluating liquefaction potential of natural and fill deposits. Field experience is used to illustrate the application of the techniques.

Estimating the hydraulic properties of an aquitard from in situ pore pressure measurements

2014 ◽  
Vol 22 (8) ◽  
pp. 1875-1887 ◽  
Author(s):  
Brian D. Smerdon ◽  
Laura A. Smith ◽  
Glenn A. Harrington ◽  
W. Payton Gardner ◽  
Claudio Delle Piane ◽  
...  
Keyword(s):  
Pore Pressure ◽  
Hydraulic Properties ◽  
Pressure Measurements

Cone penetration testing in deltaic soils

1983 ◽  
Vol 20 (1) ◽  
pp. 23-35 ◽  
Author(s):  
R. G. Campanella ◽  
P. K. Robertson ◽  
D. Gillespie
Keyword(s):  
Pore Pressure ◽  
Test Site ◽  
Pressure Measurements ◽  
Test Results ◽  
Cone Penetration ◽  
In Situ Tests ◽  
Penetration Testing ◽  
Cone Penetration Testing ◽  
Laboratory Test Results

A multichannel electric cone penetrometer was used to perform a variety of in situ tests in saturated deltaic deposits.Factors affecting the tip bearing, friction sleeve stress, and pore-water pressures and their interpretation are studied and discussed. Pore pressure measurements were essential to evaluate the in situ test results. The effect of rate of penetration is discussed and the concept of effective bearing introduced as an attempt to interpret cone bearing in undrained or partially drained soil. Field values of consolidation characteristics from pore pressure decay are compared with traditional laboratory consolidation test results on undisturbed samples.The advantages of continuous electric cone logging to evaluate soil stratigraphy are demonstrated. Field and laboratory test results are presented from a test site where stabilization was used to reduce liquefaction potential of hydraulically placed sand and silt. The importance of pore pressure measurements is demonstrated along with examples and recommendations for the location of the porous element.Keywords: static cone penetration testing, in situ testing, pore pressures, consolidation, stratigraphy, liquefaction.

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