Geologic investigations near an underhand cut-and-fill stope, Lucky Friday Mine, Mullan, ID. Report of Investigations/1993
Researchers from the US Bureau of Mines conducted geologic investigations in an area of the Lucky Friday Mine, Mullan, ID, that included the 5300-107 demonstration stope using underhand longwall cut-and-fill mining. Structural analysis of the area suggested that argillite beds form planes of weakness between blocks of brittle quartzite, and energy may be released along these planes and at the junctures of fractures. Mapping argillite beds and fractures in the stope wall rock showed that the planes of these features diverged and that their attitudes corresponded from one wall to the other. Seismic analysis showed that the number and location of events varied as each cut was mined, with about 39 pct of the total number of events occurring above the cut being mined, about 54 pct below, and 7 pct at the same elevation.
- Research Organization:
- Bureau of Mines, Spokane, WA (United States). Spokane Research Center
- OSTI ID:
- 6130975
- Report Number(s):
- PB-93-215739/XAB; BUMINES-RI-9470
- Resource Relation:
- Other Information: Library of Congress catalog card No. 93-17122
- Country of Publication:
- United States
- Language:
- English
Similar Records
Rock mechanics investigations at the Lucky Friday Mine. Part 1. Instrumentation of an experimental underhand longwall stope. Report of Investigations/1992
Rock mechanics investigations at the Lucky Friday Mine. Part 2. Evaluation of underhand backfill practice for rock burst control. Report of Investigation/1992
Related Subjects
LONGWALL MINING
ROCK MECHANICS
ARGILLITE
ATTITUDES
COAL MINING
DEMONSTRATION PROGRAMS
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
GEOLOGIC FRACTURES
IDAHO
MAPPING
MECHANICAL PROPERTIES
MINES
QUARTZITES
ROCK BURSTS
SEISMICITY
STRESSES
DEVELOPED COUNTRIES
GEOLOGIC STRUCTURES
MECHANICS
METAMORPHIC ROCKS
MINING
NORTH AMERICA
ROCKS
SEDIMENTARY ROCKS
SHALES
UNDERGROUND FACILITIES
UNDERGROUND MINING
USA
012031* - Coal
Lignite
& Peat- Underground Mining- Strata Mechanics & Control- (1987-)