Seismicity and stress changes subsequent to destress blasting at the galena mine and implications for stress control strategies. Report of investigations/1993

Technical Report · Fri Jan 01 04:00:00 EST 1993

OSTI ID:6429467

Boler, F M; Swanson, P L

Destress blasting is commonly used as a stress control technique at the Galena Mine, Wallace, Idaho, where the U.S. Bureau of Mines maintains a cooperative research program with the mine operators (ASARCO). A digital seismic array and an array of borehole pressure cells (BPC's) had been installed near the site of a stope undergoing mining and periodic destressing. Fault plane solutions and dislocation models established that stress changes induced by the event at 034500 PST on February 7, may have been significant in promoting the occurrence of the event at 122020 PST the same day. Theoretical investigations suggest that destress effectiveness can be improved by applying knowledge of the existing stress field, an understanding of rock burst mechanics, and fracture mechanics principles to the design of the destress.

• Research Organization: Bureau of Mines, Denver, CO (United States). Denver Research Center
• OSTI ID: 6429467
• Report Number(s): PB-93-189504/XAB; BUMINES-RI--9448
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
ADMINISTRATIVE PROCEDURES
ARRAY PROCESSORS
BOREHOLES
CAVITIES
DATA
DEVELOPED COUNTRIES
DISPERSIONS
EXPLOSIVE FRACTURING
FRACTURE MECHANICS
FRACTURING
GALENA
IDAHO
INFORMATION
INVESTIGATIONS
MECHANICS
MINERALS
MINES
MINING
MIXTURES
NORTH AMERICA
NUMERICAL DATA
RESEARCH PROGRAMS
ROCK BURSTS
SEISMIC WAVES
SEISMICITY
SOLUTIONS
STRESSES
SULFIDE MINERALS
THEORETICAL DATA
UNDERGROUND FACILITIES
UNDERGROUND MINING
USA