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|The Bureau of Mines, through in-house and contract research, monitored mountain bump-prone areas of the Olga #2 Mine, near Welch, WV, using microseismic techniques for 15 months during 1985 and 1986. During this period, two ground failures occurred that were considered "mountain bumps" owing to excessive stress buildups. One failure damaged the roof and 4 pillars around an intersection; the second failure, which released much greater energy, resulted in significant damage to over 100 coal pillars. Analysis of the microseismic data collected provided significant insights into the magnitude and location of each failure. The actual failure zone was clearly delineated prior to the mountain bump occurrences through analysis of source locations of each microseismicevent. Trends in cumulative rate plots indicated the onset of structural instability. Although the data could not be analyzed automatically, the significance of the data interpretation cannot be overemphasized. Microseismic monitoring of bump-prone areas can be successful in providing a means to actually observe the structural stability occurring in underground coal mines. This paper discusses data collection techniques, analysis methods, and implications of the monitoring technique, with special emphasis on actual data from two large mountain bumps in West Virginia.|
Additional chapters/articles from the SME-ICGCM book Proceedings 6th International Conference on Ground Control in Mining (ICGCM) 6th
|Microseismic Monitoring of Mountain Bumps and Bounces: A Cas||Factors Influencing the Occurrence of Coal Pillar Bumps at||Longwall Pace Bursts and Inadequate Caving: A Came Study||Mine Layout Deign for Coal Bump Control||The Strong Outbursts of Coal and Gas in Coal Mines in China||Bock Bursts Occurrence. in the Coeur D'Alene Mining Dis||A History of Bock Burst Research in the Coeur D'Alene M||Chemical Destressing to Alleviate Rockbursts||Rockburst Control Measures at INCO's Creighton Mine||Prevention. Control and Management of Coal and Gas Outbursts||Application in Design for Close Proximity Multi-Seem Mining||Geologic Conditions Affecting Mineability in the Jane Mine.||Analysis of Cutter Roof Using the Boundary Element Method||A Novel Ground Control Program at Plateau Mining Company||Evaluation of Anchorage Integrity for Grouted Bolts in Weak||STRATA III ? A Full-Spectrum Roof Control Concept||Study of Ground Movement Over a Longwall Mine||Field Measurements of Overburden and Chain Pillar Response t||A Method for Sizing Longwall Pillars Based on Field Measurem||Aspects of Chain Pillar Design in Relation to Longwall Minin||The Initial Collapse of the Overburden Over Longwall Panels||Monitoring and Prediction of Ground Movements Above Undergro||Mechanisms of Chimney Subsidence Over Abandoned Coal Mines||Time-dependent Behavior of Immediate Weak Floor Strata from||The Significance of Specimen Stiffness and Post Yield Charac||Frictional Properties of Rock Applied to Mining Excavations||Ice Pillars, Packwalls, and Brattices||Investigation of Subsidence Over AML: A Case Study||Deign of Support System for Mining Tunnels in Carboniferous||Support of Tunnels in South African Gold Mines||The Stress Measurement and Underground Engineering||Field Measurements Of Overburden And Chain Pillar Response T|