Shallow Infiltration Processes at Yucca Mountain, Nevada PDF Download
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Author: Lorraine E. Flint
Publisher:
ISBN:
Category : Radioactive waste disposal in the ground
Languages : en
Pages : 56
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Book Description
Author: Lorraine E. Flint
Publisher:
ISBN:
Category : Radioactive waste disposal in the ground
Languages : en
Pages : 56
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Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 1200
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 1428918930
Category :
Languages : en
Pages : 69
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Book Description
Determination of the suitability of Yucca Mountain, in southern Nevada, as a geologic repository for high-level radioactive waste requires the use of numerical flow and transport models. Input for these models includes parameters that describe hydrologic properties and the initial and boundary conditions for all rock materials within the unsaturated zone, as well as some of the upper rocks in the saturated zone. There are 30 hydrogeologic units in the unsaturated zone, and each unit is defined by limited ranges where a discrete volume of rock contains similar hydrogeologic properties. These hydrogeologic units can be easily located in space by using three-dimensional lithostratigraphic models based on relationships of the properties with the lithostratigraphy. Physical properties of bulk density, porosity, and particle density; flow properties of saturated hydraulic conductivity and moisture-retention characteristics; and the state variables (variables describing the current state of field conditions) of saturation and water potential were determined for each unit. Units were defined using (1) a data base developed from 4,892 rock samples collected from the coring of 23 shallow and 8 deep boreholes, (2) described lithostratigraphic boundaries and corresponding relations to porosity, (3) recognition of transition zones with pronounced changes in properties over short vertical distances, (4) characterization of the influence of mineral alteration on hydrologic properties such as permeability and moisture-retention characteristics, and (5) a statistical analysis to evaluate where boundaries should be adjusted to minimize the variance within layers. This study describes the correlation of hydrologic properties to porosity, a property that is well related to the lithostratigraphy and depositional and cooling history of the volcanic deposits and can, therefore, be modeled to be distributed laterally.
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 748
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Book Description
Author: Lorraine E. Flint
Publisher:
ISBN:
Category : Hydrogeology
Languages : en
Pages : 74
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Book Description
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 44
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Book Description
Author: David E. Prudic
Publisher:
ISBN:
Category : Deuterium
Languages : en
Pages : 32
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Author:
Publisher:
ISBN:
Category : Aquifers
Languages : en
Pages : 144
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Book Description
Author:
Publisher:
ISBN:
Category : Radioactive waste disposal
Languages : en
Pages : 630
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Book Description
Author: Daniel D. Evans
Publisher: American Geophysical Union
ISBN:
Category : Science
Languages : en
Pages : 212
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Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 42. This monograph is an update and revision of the first edition, Geophysical Monograph 42, on ground-water flow and transport through unsaturated, fractured rock, published by AGU in 1987. The first edition evolved from a special symposium held during the American Geophysical Union fall meetings in San Francisco in December 1986. Invited and contributed papers at that AGU session, as well as panel presentations, focused on conceptualizing, measuring and modeling flow and transport through unsaturated fractured rock. As noted in the preface to the first edition, "the expanded interest in the topic (water flow and contaminant transport through unsaturated fractured rock) was initiated when the U.S. Geological Survey proposed that deep unsaturated zones in arid regions be considered in the site selection for the first high-level, commercially generated radioactive waste repository." Much of the research reported in that first edition was motivated by the U.S. Department of Energy's program to investigate Yucca Mountain at the Nevada Test Site as a possible geologic repository for commercially generated, high-level radioactive waste. As noted in the overview paper of the first edition, "characterization methods and modeling are in their developmental stage with the greatest lack of knowledge being the interaction between fracture and matrix flow and transport properties." Although the first edition of this monograph reflected the state-of-the science, laboratory and field experimental programs were novel and limited and, in general, followed from the principles and methods developed in the soil science community.
