Strength and permeability of an ultra-large specimen of granitic rock
Laboratory tests were conducted to measure the mechanical and transport properties of a 1-m-diameter by 2-m-high specimen of jointed granitic rock. Uniaxial loading was applied and radial permeability tests were made at various stress levels. Ultimate strength of the specimen was estimated prior to loading by testing small 52 mm diameter cores with similar fracture patterns. It was found that deformabilities of the large and small specimens were similar; however, the uniaxial strength of the large core was about 10% of that predicted. Although the large core contained a complex joint system, its overall permeability was dominated by a single open fracture normal to the axis. Using a simple parallel-plate analog, changes in the equivalent single-fracture aperture under load were significantly less than closures measured by means of linear variable differential transformers situated across the main fracture. 11 references.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5847183
- Report Number(s):
- LBL-16268; CONF-830790-1; ON: DE83016695
- Resource Relation:
- Conference: 24. symposium on rock mechanics, College Station, TX, USA, 20 Jul 1983; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Strength and permeability tests on ultra-large Stripa granite core
Experimental characterization of the hydraulic and mechanical behavior of a jointed rock specimen
Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
GRANITES
HYDRAULIC CONDUCTIVITY
PERMEABILITY
ULTIMATE STRENGTH
BENCH-SCALE EXPERIMENTS
EXPERIMENTAL DATA
DATA
IGNEOUS ROCKS
INFORMATION
MECHANICAL PROPERTIES
NUMERICAL DATA
PLUTONIC ROCKS
ROCKS
580300* - Mineralogy
Petrology
& Rock Mechanics- (-1989)
052002 - Nuclear Fuels- Waste Disposal & Storage