Rock index properties for geoengineering in underground development
This paper describes the use of index testing to obtain rock properties that are useful in the design and construction planning of an underground development for civil engineering or mining projects. The index properties discussed include: point load; Schmidt hammer hardness; abrasion hardness; and total hardness. The first two index properties correlate to uniaxial compressive strength (UCS) and Young's modulus. Discussions are given on empirical, normalized relationships of UCS to rock mass properties and the integrated use with semi-empirical, geotechnical design methods. The hardness property indices correlate to construction performance parameters and some relevant experience is cited. Examples of data are presented from an index testing program carried out primarily on siltstone, sandstone and limestone rock core samples retrieved from depths up to 1005 m (3300 ft) in a borehole drilled in the Paradox Basin in eastern Utah. The borehole coring was done for a nuclear waste repository site investigation.
- Research Organization:
- Woodward-Clyde Consultants, Oakland, CA (US)
- OSTI ID:
- 6305319
- Journal Information:
- Min. Eng. (Littleton, Colo.); (United States), Vol. 41:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
LIMESTONE
DRILL CORES
RADIOACTIVE WASTE STORAGE
UNDERGROUND FACILITIES
ROCKS
CIVIL ENGINEERING
MECHANICAL PROPERTIES
SANDSTONES
UTAH
DESIGN
GROUND DISPOSAL
PLANNING
RADIOACTIVE WASTES
YOUNG MODULUS
CARBONATE ROCKS
ENGINEERING
FEDERAL REGION VIII
MANAGEMENT
MATERIALS
NORTH AMERICA
RADIOACTIVE MATERIALS
SEDIMENTARY ROCKS
STORAGE
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTE STORAGE
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
422000 - Engineering- Mining & Underground Engineering- (1980-)