Measurement of the Hydraulic Conductivity of Fine-Grained Soils

Olson, Roy E.; Daniel, David E.

doi:10.1520/stp28316s

Cited by 148 publications

(51 citation statements)

References 86 publications

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“…Olson and Daniel, 1981), this small sample of hydraulic conductivity data shows good agreement between mean values and variances obtained from single-well pumping tests and laboratory tests of cores, although individual values do vary over a fairly wide range.…”

Section: B31 Spatial Variation (Vj) Measurement Noise (V2) and Stsupporting

confidence: 54%

Radioactive waste isolation in salt:

Ditmars¹,

Baecher²,

Edgar³

et al. 1988

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Since late 1982, Argonne National Laboratory has been under contract to DOE to conduct multidisciplinary peer reviews of program plans and reports covering research and development activities related to siting, constructing, operating, and decommissioning a high-level radioactive waste repository in salt.Argonne has simultaneously undertaken studies of various topical and regulatory areas to provide background information and support to peer review panelists. This study grew out of discussions on how to evaluate plans for site characterization activities.This study was initiated in the summer of 1984 by Wyman Harrison (chairman of the Argonne peer review panel), with the assistance of Charles H. Dowding of Northwestern University. Participants in the study were to consider how to review and evaluate plans for the measurement activities expected to be part of site characterization. The performance-based requirements of future licensing activities were to be emphasized. Such general considerations were to be more sharply focused by examining existing measurement data for a candidate repository site in salt and by formulating hypothetical plans for additional measurements there. The Richton dome site in Mississippi was chosen for this purpose.Several aspects of potential measurement plans were examined by Argonne participants: Douglas F. Hambley and David F. Fenster considered geological and geophysical work related to site structure and discontinuities, Dorland E. Edgar gathered and reviewed geohydrologic data, John D. Ditmars assessed the measurement needs of groundwater modeling, and Robert E. Rospenda developed cost information on potential measurements. Gregory B. Baecher of the Massachusetts Institute of Technology joined the study group and suggested the S-index approach as a unified means of addressing concerns regarding the uncertainty in the data and its effect on assessing whether performance objectives will be met or exceeded.

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Section: B31 Spatial Variation (Vj) Measurement Noise (V2) and Stsupporting

confidence: 54%

Radioactive waste isolation in salt:

Ditmars¹,

Baecher²,

Edgar³

et al. 1988

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“…the bentonite studied here) is difficult with any technique (Gibson et al, 1967;Smiles and Rosenthal, 1968;Smiles, 1968;Kharaka and Smalley, 1976;Olson and Daniel, 1981). In this investigation, low hydraulic gradients are used for the determination of permeability to minimize the deformation of the samples during flow testing.…”

Section: Flow Test Methodsmentioning

confidence: 97%

“…The constant flow rate method is not chosen for this study, mainly because this method is not suitable for high injection pressure flow tests, high temperature flow tests, and piping tests, because pressure/gradient is the critical independent variable. The transient flow methods are excluded from this investigation as they tend to yield lower permeability values than those obtained from the steady flow methods (Seaber and Vecchioli, 1966;Olson and Daniel, 1981;. Permeability discrepancies between a steady flow test and transient flow tests of the Pierre Shale are reported by Neuzil (1986).…”

Section: Flow Test Methodsmentioning

confidence: 99%

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Sealing performance of bentonite and bentonite/crushed rock borehole plugs

Ouyang¹,

Daemen

1992

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“…Units of the permeability equation are in cmA 2 but expressed in darcies by use of the conversion 1 darcy = 0.981 * 10"8 cm A 2 (Olsen and Daniel, 1981). Figure 13 shows the rather rapid decrease in permeability with respect to flow time observed for most nonfractured moderately to densely welded tuffs.…”

Section: Permeability Measurementsmentioning

confidence: 99%

Water permeability and related rock properties measured on core samples from the Yucca Mountain USW GU-3/G-3 and USW G-4 boreholes, Nevada Test Site, Nevada

Anderson¹

1993

Open-File Report

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Core samples from the Yucca Mountain USW GU-3/G-3 and USW G-4 boreholes were measured for bulk density, grain density, porosity, resistivity, and water permeability as part of a comprehensive geologic investigation designed to determine the suitability of Yucca Mountain as a site for the containment of high-level radioactive waste products. The cores were selected at the drill sites so as to be representative of the major lithologic variations observed within stratigraphic units of the Paintbrush Tuff, Calico Hills Tuff, Crater Flat Tuff, Lithic Ridge Tuff, and Older Tuffs. USW GU-3/G-3 was drilled to a depth of 1533.8 meters and the USW G-4 borehole penetrated to the 914.7 meter level. Two hundred and twenty six samples were used in the laboratory study of which two hundred were sample pairs drilled from a common core. The paired samples were oriented axially and perpendicular to the alignment of the borehole.Dry and saturated bulk density, grain density, and porosity measurements were made on the core samples principally to establish that a reasonable uniformity exists in the textural and mineral character of the sample pairs. Where bulk densities are different, grain density data show that the disparities can usually be attributed to porosity variations rather than to inequalities in mineral content. Electrical resistivity measured on sample pairs tended to be lower along the plane transverse to the vertical axis of the drill core herein referred to as the horizontal plane. Permeability values, ranging from virtually 0 (<.02 microdarcies) to over 200 millidarcies, also indicate a preferential flow direction along the horizontal plane of the individual tuff units. Of the 67 sample pairs from the USW GU-3/G-3 borehole, 58 percent of the horizontally oriented core had a higher permeability and lower resistivity than their vertically oriented counterparts. Only in 10 percent of the 67 sample pairs did the vertical core demonstrate a similar permeability/resistivity relationship. In those sample pairs from the USW G-4 borehole, 65 percent of the horizontal plugs and 24 percent of the vertical plugs exhibited this same permeability/resistivity correspondence. Despite the non-bedded character of the ash-flow tuffs, the welding process possibly produced an interconnecting pore structure along the implied bedding plane so as to provide a continuous and less tortuous path for both current and water flow. Permeability decreases with flow duration in all but the non-welded tuffs as unconsolidated particles within the pore network are repositioned so as to impede the continued flow of water through the rock. Reversing flow direction initially restores the permeability of the rock to its original or maximum value.

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Measurement of the Hydraulic Conductivity of Fine-Grained Soils

Cited by 148 publications

References 86 publications

Radioactive waste isolation in salt:

Radioactive waste isolation in salt:

Sealing performance of bentonite and bentonite/crushed rock borehole plugs

Water permeability and related rock properties measured on core samples from the Yucca Mountain USW GU-3/G-3 and USW G-4 boreholes, Nevada Test Site, Nevada

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