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Continuous microseismic monitoring in a deep longwall coal mine.

Authors
Wilson PE; Lemons JS
Source
Proceedings of the 4th Conference on Ground Control for Midwestern U. S. Coal Mines, November 2-4, 1992, Mt. Vernon, Illinois. Chugh YP, Beasley G, eds. Carbondale, IL: Southern Illinois University, 1992 Nov; :227-238
Link
NIOSHTIC No.
10011536
Abstract
The U.S. Bureau of Mines, as part of its effort to control seam and strata failures, is investigating the use of real-time microseismic monitoring to forecast mountain bumps and to evaluate the success of bump prevention and mitigation efforts. An Automated Microseismic Monitoring System (AMMS) has been developed to collect mining-induced seismic event data. The monitoring system couples a geophone array, distributed about the working area, with a centralized subsurface station responsible for signal collection, conditioning, storage, and automated analysis. This technology has been employed in a deep eastern Kentucky coal mine experiencing infrequent, yet severe, coal bumps during longwall panel retreat. Shortly after installing the AMMS, a major bump occurred, seriously injuring two miners and causing great financial loss to the mining operation. Subsequent analysis of the microseismic data collected for this event suggests that information exists that may describe the "likelihood" of bump occurrence.
Keywords
Monitoring systems; Longwall mining; Underground mines; Coal mines; Ground monitoring; Ground control; Ground stability; Strata control; Geologic strata; Geology; Geologic structures; Ground falls
Publication Date
19921102
Document Type
OP; Conference/Symposia Proceedings
Editors
Chugh YP; Beasley G
Fiscal Year
1993
NTIS Accession No.
NTIS Price
Identifying No.
OP 306-92
NIOSH Division
DRC
Source Name
Proceedings of the 4th Conference on Ground Control for Midwestern U. S. Coal Mines, November 2-4, 1992, Mt. Vernon, Illinois
State
CO; KY; IL
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