刘贤锋
LIU Xianfeng(Banshi Mining CoLtd,Thonghua Iron & Steel Group,Baishan City,Jilin 134304,China)

• 1:通钢集团板石矿业公司 吉林白山134304

摘要(Abstract)：

在露天开采向井下开采过渡期间,露天爆破震动造成井下巷道破坏;为此,采取了一系列技术措施降低爆破震动,保证了露天采矿生产和井下掘进工程的正常进行。这些措施包括孔内分段装药,孔内、孔间、排间联合微差起爆,合理选用微差时间及起爆顺序;同时辅以增减上、下梯段高度,孔底间隔垫层等。文中详细讨论了孔内分段数的确定,段高的调整,微差时间和起爆顺序的选择以及井下巷道受损程度的判断方法。
During the transition of surface mining to underground mining,the underground workings were damaged by surface blasting vibrationFor this reason,a series of technological measures were taken,thus ensuring normal surface mining and underground driftingThese measures include the decked charge in a hole,the millisecond blasting of combining inhole and interhole delays with interrow delay,reasonable delay interval and blasting sequenceThe other measures involve increasing the heights of upper or down benches and putting a buffer pad in the bottom of a holeIn this paper,the determination of decked charge number,the adjustment of bench height,the selection of delay interval and initiating sequence and the judgment of heading damage degree were discussed in more detail

关键词(KeyWords)： 露天矿;露天转地下;间隔装药;微差爆破;减震措施
Openpit mine;Transition of surface to underground mining;Decked charge;Millisecond blasting;Vibration-reduction measures

Abstract:

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作者(Author): 刘贤锋
LIU Xianfeng(Banshi Mining CoLtd,Thonghua Iron & Steel Group,Baishan City,Jilin 134304,China)

参考文献(References)：

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