In underground mining activities,blasting operation is the core link of mining.The safety,efficiency and rationality of the mining operation have great influence on the subsequent ore-drawing,filling,transportation and other links.In the face of the present situation that the section specification of underground mining approach is poor,which has great influence on the filling body and has hidden dangers such as sticking ore.The original blasting method is improved,and the pre-split blasting method is integrated into the existing blasting operation,so as to control the width of the approach and the sliding surface of the two sides,ensure the formation of the section,reduce the follow-up support and other operations,and provide good working conditions for filling preparation,so as to achieve a safe and efficient mining operation.
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