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Unsaturated fractured rock characterization methods and data sets at the Apache Leap Tuff Site

Technical Report ·
DOI:https://doi.org/10.2172/137805· OSTI ID:137805
; ; ;  [1]
  1. Arizona Univ., Tucson, AZ (USA). Dept. of Hydrology and Water Resources

Performance assessment of high-level nuclear waste containment feasibility requires representative values of parameters as input, including parameter moments, distributional characteristics, and covariance structures between parameters. To meet this need, characterization methods and data sets for interstitial, hydraulic, pneumatic and thermal parameters for a slightly welded fractured tuff at the Apache Leap Tuff Site situated in central Arizona are reported in this document. The data sets include the influence of matric suction on measured parameters. Spatial variability is investigated by sampling along nine boreholes at regular distances. Laboratory parameter estimates for 105 core segments are provided, as well as field estimates centered on the intervals where the core segments were collected. Measurement uncertainty is estimated by repetitively testing control samples. 31 refs., 10 figs., 21 tabs.

Research Organization:
Nuclear Regulatory Commission, Washington, DC (United States). Div. of Engineering; Arizona Univ., Tucson, AZ (United States). Dept. of Hydrology and Water Resources
OSTI ID:
137805
Report Number(s):
NUREG/CR--5596; ON: TI90016722
Country of Publication:
United States
Language:
English