Approaches to large scale unsaturated flow in heterogeneous, stratified, and fractured geologic media
This report develops a broad review and assessment of quantitative modeling approaches and data requirements for large-scale subsurface flow in radioactive waste geologic repository. The data review includes discussions of controlled field experiments, existing contamination sites, and site-specific hydrogeologic conditions at Yucca Mountain. Local-scale constitutive models for the unsaturated hydrodynamic properties of geologic media are analyzed, with particular emphasis on the effect of structural characteristics of the medium. The report further reviews and analyzes large-scale hydrogeologic spatial variability from aquifer data, unsaturated soil data, and fracture network data gathered from the literature. Finally, various modeling strategies toward large-scale flow simulations are assessed, including direct high-resolution simulation, and coarse-scale simulation based on auxiliary hydrodynamic models such as single equivalent continuum and dual-porosity continuum. The roles of anisotropy, fracturing, and broad-band spatial variability are emphasized. 252 refs.
- Research Organization:
- Nuclear Regulatory Commission, Washington, DC (United States); US Nuclear Regulatory Commission (NRC), Washington, DC (United States). Div. of Engineering
- Sponsoring Organization:
- Nuclear Regulatory Commission, Washington, DC (United States)
- OSTI ID:
- 138205
- Report Number(s):
- NUREG/CR-5743; ON: TI91018689; TRN: 91:027734
- Resource Relation:
- Other Information: PBD: Aug 1991
- Country of Publication:
- United States
- Language:
- English
Similar Records
Flow and transport in unsaturated fractured rock: Effects of multiscale heterogeneity of hydrogeologic properties
Geostatistical and Stochastic Study of Flow and Transport in the Unsaturated Zone at Yucca Mountain
Related Subjects
99 MATHEMATICS
COMPUTERS
INFORMATION SCIENCE
MANAGEMENT
LAW
MISCELLANEOUS
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
YUCCA MOUNTAIN
RADIOACTIVE WASTE DISPOSAL
SURFACE CONTAMINATION
SPATIAL DISTRIBUTION
ALPHA-BEARING WASTES
GEOLOGIC FORMATIONS
WATER SATURATION
RETENTION
GROUND WATER
STOCHASTIC PROCESSES
HYDRODYNAMIC MODEL
FLUID-STRUCTURE INTERACTIONS
DUAL ABSORPTION MODEL
DARCY LAW
POROSITY
HYDRAULIC CONDUCTIVITY
GEOLOGIC FRACTURES
HYDRAULIC FRACTURES
RADIONUCLIDE MIGRATION
RANDOMNESS
COMPUTERIZED SIMULATION
NUMERICAL ANALYSIS
FLOW MODELS
SOIL MECHANICS
AQUIFERS
ANISOTROPY
DATA ANALYSIS
REGULATIONS
HIGH-LEVEL RADIOACTIVE WASTES
GEOLOGIC SURVEYS
STRATIGRAPHY
SUBSURFACE STRUCTURES
Yucca Mountain Project