Journal ArticleDOI
Porosity and Permeability in Sediment Mixtures
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Porosity in sediments that contain a mix of coarser- and finer-grained components varies as a function of the porosity and volume fraction of each component as well as air- and water-based permeametry on the model sediment mixtures.Abstract:
Porosity in sediments that contain a mix of coarser- and finer-grained components varies as a function of the porosity and volume fraction of each component. We considered sediment mixtures representing poorly sorted sands and gravely sands. We expanded an existing fractional-packing model for porosity to represent mixtures in which finer grains approach the size of the pores that would exist among the coarser grains alone. The model well represents the porosity measured in laboratory experiments in which grain sizes and volume fractions were systematically changed within sediment mixtures. Permeability values were determined for these sediment mixtures using a model based on grain-size statistics and the expanded fractional-packing porosity model. The permeability model well represents permeability measured in laboratory experiments using air- and water-based permeametry on the model sediment mixtures.read more
Citations
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Experimental study and discrete element method modeling of compression and permeability behaviors of weakly anisotropic sandstones
TL;DR: In this paper, a series of triaxial compression tests equipped with permeability measurement on sandstone specimens to examine their mechanical properties and permeability evolution during the failure of weakly anisotropic rock is examined.
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Revised Soil Classification System for Coarse-Fine Mixtures
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Analysis of soil hydraulic and thermal properties for land surface modeling over the Tibetan Plateau
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Influence of Hydrological Perturbations and Riverbed Sediment Characteristics on Hyporheic Zone Respiration of CO2 and N2
Michelle Newcomer,Susan S. Hubbard,Jan H. Fleckenstein,U. Maier,Christian Schmidt,Martin Thullner,Craig Ulrich,Nicolas Flipo,Yoram Rubin +8 more
TL;DR: Newcomer et al. as mentioned in this paper developed and tested a numerical model that simulates biological-physical feedback in the hyporheic zone to explore different initial conditions in terms of dissolved organic carbon availability, sediment characteristics, and stochastic variability in anaerobic conditions from water table fluctuations.
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Characterization and Estimation of Hydraulic Properties in an Alluvial Gravel Vadose Zone
Rodney Dann,Murray E. Close,Mark J. Flintoft,Ross Hector,H.E. Barlow,Steve Thomas,G. S. Francis +6 more
TL;DR: In this paper, the authors used a variety of characterization methods to derive conceptual understanding and estimates of hydraulic properties of a coarse alluvial gravel vadose zone in New Zealand.
References
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Journal ArticleDOI
Mechanical Packing of Spherical Particles
TL;DR: An idealized experimental study of particle packing was made as mentioned in this paper, where spherical metal shot of several discrete, narrow size ranges was efficiently packed in glass containers by mechanical vibration, and the significance and utility of this work to the ceramic and other industries was discussed.
Book
The theory of ground-water motion
TL;DR: In this paper, it was shown that a more exceptionless analytical theory results if a potential whose value at a given point is defined to be equal to the work required to transform a unit mass of fluid from an arbitrary standard state to the state at the point in question is employed.
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Construction of an intergranular volume compaction curve for evaluating and predicting compaction and porosity loss in rigid-grain sandstone reservoirs
TL;DR: In this paper, a plot of intergranular volume vs. depth was constructed using data from relatively uncemented reservoir sandstones from a variety of depths, ages, and geographic locations.
Journal ArticleDOI
Fractional packing model for hydraulic conductivity derived from sediment mixtures
TL;DR: Petrophysical relations are derived to predict porosity and hydraulic conductivity from grain size distributions considering particle packing in sediment mixtures as discussed by the authors, and a fractional packing model for porosity is developed by considering the fraction of intrapore fines that occur as the fines content increases.