Relationship of microstructure in stressed coal seams to observed seismoacoustic phenomena

Conference · Sun Jan 01 00:00:00 EST 1984 · Ser. Rock Soil Mech.; (United States)

OSTI ID:6740488

Marcak, H

Seismoacoustical activity is a time-dependent phenomenon. It is markedly influenced by the microstructure that is developed within the coal strata in response to stress changes imposed by the advancing longwall face. An in situ test is described whereby time-dependent changes in this structure were measured by means of electrical resistivity. On the basis of micromorphic continuum theory and mining experience, two plausible models are suggested for the development of seismoacoustical activity in potential failure zones.

• Research Organization: Academy of Mining and Metallurgy, Krakow, Poland
• OSTI ID: 6740488
• Report Number(s): CONF-811036-
• Journal Information: Ser. Rock Soil Mech.; (United States), Conference: 3. conference on acoustic emission/microseismic activity in geologic structures and materials, University Park, PA, USA, 5 Oct 1981
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
MICROSTRUCTURE
COAL MINES
SEISMIC SURVEYS
ACOUSTIC EMISSION TESTING
ELECTRIC CONDUCTIVITY
STRESSES
ACOUSTIC TESTING
CARBONACEOUS MATERIALS
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOPHYSICAL SURVEYS
MATERIALS
MATERIALS TESTING
MINES
NONDESTRUCTIVE TESTING
PHYSICAL PROPERTIES
SURVEYS
TESTING
UNDERGROUND FACILITIES
012000* - Coal
Lignite
& Peat- Mining