Practice on monitoring and prevention technology for rockburst in Hongqi Coal Mine
Since 2014,in the No.8 coal seam working face of Hongqi Coal Mine in Shanxi Province has experienced multiple rock burst accidents.In order to reduce the safety accidents caused by frequent rock burst accidents,four rock burst prediction methods,namely microseismic monitoring method,rock noise monitoring method,electromagnetic radiation method,and rock debris method,were ana-lyzed.Coal seam water injection softening,large aperture drilling pressure relief method,and roof pre splitting blasting was used to carry out rock burst prevention and control work.After implementation,no rock burst occurred in the working face,achieving the expected goal.
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