Apache Leap Tuff INTRAVAL experiments - results and lessons learned

Technical Report · Fri Mar 01 04:00:00 EST 1996

DOI:https://doi.org/10.2172/211317· OSTI ID:211317

Rasmussen, T C ^[1]; Rhodes, S C; Guzman, A; Neuman, S P ^[2]

---

1. Univ. of Georgia, Athens, GA (United States)
2. Univ. of Arizona, Tucson, AZ (United States). Dept. of Hydrology and Water Resources

Data from laboratory and field experiments in unsaturated fractured rock are summarized and interpreted for the purpose of evaluating conceptual and numerical models of fluid, heat and solute transport. The experiments were conducted at four scales, in small cores (2.5-cm long by 6-cm across), a large core (12-cm long by 10-cm across), a small block containing a single fracture (20 x 21 x 93 cm), and at field scales in boreholes (30-m long by 10-cm across) at three scales (1/2-, 1- and 3-meters). The smallest scale in the laboratory provided isothermal hydraulic and thermal properties of unfractured rock. Nonisothermal heat, fluid and solute transport experiments were conducted using the large core. Isothermal gas and liquid flow experiments were conducted in the fractured block. Field-scale experiments using air were used to obtain in situ permeability estimates as a function of the measurement scale. Interpretation of experimental results provides guidance for resolving uncertainties related to radionuclide migration from high level waste repositories in unsaturated fractured rock.

• Research Organization: Nuclear Regulatory Commission, Washington, DC (United States). Office of Nuclear Regulatory Research; Arizona Univ., Tucson, AZ (United States). Dept. of Hydrology and Water Resources
• Sponsoring Organization: Nuclear Regulatory Commission, Washington, DC (United States)
• OSTI ID: 211317
• Report Number(s): NUREG/CR--6096; ON: TI96008080
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
DIAGRAMS
ENVIRONMENTAL TRANSPORT
NUMERICAL DATA
PERMEABILITY
POROSITY
RADIOACTIVE WASTE DISPOSAL
RADIOISOTOPES
THERMAL CONDUCTIVITY
TUFF