Continuous microseismic monitoring in a deep longwall coal mine.
Wilson PE; Lemons JS
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
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.
Monitoring systems; Longwall mining; Underground mines; Coal mines; Ground monitoring; Ground control; Ground stability; Strata control; Geologic strata; Geology; Geologic structures; Ground falls
OP; Conference/Symposia Proceedings
Chugh YP; Beasley G
Proceedings of the 4th Conference on Ground Control for Midwestern U. S. Coal Mines, November 2-4, 1992, Mt. Vernon, Illinois