Precise leveling determination of surface uplift patterns at the New Hydraulic Fracturing Facility, Oak Ridge National Laboratory
Surface uplift patterns were determined for five grout injections at the New Hydrofracture Facility (NHF) during the period July 1983 through January 1984. The uplift patterns are complex. In plan view, they are elliptical to almost circular and exhibit varying degrees of cross-sectional asymmetry with one side steeper than the other. The long axis of the ellipse is more or less parallel to geological strike. The uplift patterns vary in size, shape and asymmetry from injection to injection. The region of maximum uplift is typically offset with respect to the injection point, suggesting that most hydrofracture injections dip to the south-southeast. Approximately 40 to 60% of the uplift measured 5 days after an injection subsided within 30 to 45 days. In one case, all of the uplift subsided within 70 days of injection. Modeling of the uplift patterns by simple models, based on homogeneous, isotropic subsurface conditions, suggests that hydrofractures produced by the injections are either horizontal or have shallow dips to the south-southeast. Such orientations are consistent with the hydrofracture orientations determined by gamma-ray logging in observation wells surrounding the NHF site. 19 refs., 17 figs., 1 tab.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5169008
- Report Number(s):
- ORNL/TM-9348; ON: DE88010738
- Country of Publication:
- United States
- Language:
- English
Similar Records
Monitoring of surface deformation and microseismicity applied to radioactive waste disposal through hydraulic fracturing at Oak Ridge National Laboratory
Hydrofracture operations at Oak Ridge National Laboratory
Related Subjects
GROUND UPLIFT
HYDRAULIC FRACTURING
EXPERIMENTAL DATA
GAMMA LOGGING
GROUTING
LOW-LEVEL RADIOACTIVE WASTES
MONITORING
ORIENTATION
RADIOACTIVE WASTE DISPOSAL
UNDERGROUND DISPOSAL
COMMINUTION
DATA
FRACTURING
INFORMATION
MANAGEMENT
MATERIALS
NUMERICAL DATA
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIOACTIVITY LOGGING
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WELL LOGGING
052002* - Nuclear Fuels- Waste Disposal & Storage