Microseismic data analysis of failure occurrence in a deep, western u. s. coal mine: A case study. Report of Investigations/1989

Technical Report · Sat Dec 31 23:00:00 EST 1988

OSTI ID:6471207

Kneisley, R O

Microseismic activity observed in both the laboratory and underground indicates that a quiet period, associated with the closure of existing fractures and strongly influenced by coal seam microstructure, occurs prior to coal bumps. Field studies conclude that coal mine bumps occur against a background of this so-called microseismic calm. The Bureau of Mines report summarizes microseismic activity associated with face bumps and floor bursts in a deep, western U.S. coal mine. Results conclude that while bumps are often accompanied by panel-wide increases in microseismic activity, bumps are not only preceded by a localized decrease in activity, but occur within these quiet zones. The results of the study concluded that microseismic activity may be applicable to the global detection of potential bump-prone zones, but that future studies are necessary to confirm these findings and to improve the techniques for evaluating stress control effectiveness.

• Research Organization: Bureau of Mines, Denver, CO (USA). Denver Research Center
• OSTI ID: 6471207
• Report Number(s): PB-90-270091/XAB; BUMINES-RI--9228
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012010 -- Coal
Lignite
& Peat-- Mining-- Planning & Surveying-- (1987-)
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
COAL DEPOSITS
COAL MINING
COAL SEAMS
EARTHQUAKES
EVALUATION
FORECASTING
GEOLOGIC DEPOSITS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
MECHANICS
MICROEARTHQUAKES
MINERAL RESOURCES
MINING
NATIONAL ORGANIZATIONS
NOISE
RESOURCES
ROCK BURSTS
ROCK MECHANICS
SEISMIC EVENTS
SEISMIC NOISE
SEISMIC SURVEYS
STRATA CONTROL
STRESS ANALYSIS
SURVEYS
UNDERGROUND MINING
US BUREAU OF MINES
US DOI
US ORGANIZATIONS