【摘要】 坚硬顶板深孔预裂松动爆破广泛应用在预防回采工作面顶板大面积来压、冲击地压防治等方面。为防止松动爆破爆炸气体外泄,减少爆炸能量损失,保障爆破效果,对爆破孔的充填封堵形式进行了深入研究,并对深孔预裂松动爆破封孔技术应用效果进行了验证。更多还原

【Abstract】 Deep-hole pre-splitting loose blasting for hard roof is widely used in the prevention of large-scale roof weighting,rock burst at mining working face and other aspects. In order to the prevent the leakage of explosive gas in loose explosion,reduce energy loss and protect blasting effect,we deeply study the sealing and filling forms of blast holes,and verify the application effect of deep-hole pre-splitting loose blasting hole sealing technique.更多还原