For the first time in an underground stone mine, the relationshipbetween roof movement and microseismic emissions was examined inconjunction with two distinct roof fall areas. As roof monitoring increasesin acceptance and monitoring technology advances, the goal of providingreliable roof fall detection systems to enhance the safety of undergroundmine workers moves closer to reality. Instrumental to reaching that goalis the ability to interpret accurately and completely roof movement andmicroseismic emissions, which can serve as precursors to roof falls.This paper examines the capabilities of convergence and microseismicmonitoring systems to better understand roof rock failure mechanics andto anticipate roof falls. An understanding of how these techniques areused and how they interact with each other is critical in developing themost effective ground control strategy for our nation's mines.
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