Analysis of Hujiahe Rock Burst Prevention and Blasting Pressure Relief Effect
As a strong rock burst mine,Hujiahe has a high risk index.Adopting scientific prevention and control technology can prevent the occurrence of mine rock burst disaster.In this paper,the impact risk area of 401111 working face was divided,and the risk prevention and control system of rock burst was put for ward,and the effect of blasting pressure relief was investigated.The results show that Hujiahe Mine is divid ed into 8 strong impact risk areas and 7 medium impact risk areas.The 401111 working face adopts large-diameter borehole pressure relief,coal seam water injection,roof pre-splitting blasting and other schemes to actively solve the dangerous area of impact.After the blasting of the return airway of the 401111 working face,there are obvious cracks on the wall of the adjacent holes.
rock burstdangerous areablasting pressure reliefcoal seam water injection
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