| 露天深孔爆破中降低大块率的技术措施 |
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| 引用本文： | 袁向全. 露天深孔爆破中降低大块率的技术措施[J]. 矿冶, 2005, 14(1): 13-15,31 |
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| 作者姓名： | 袁向全 |
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| 作者单位： | 北京矿冶研究总院,北京,100044 |
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| 摘 要： | 降低爆破大块率是矿山凿岩爆破中的一个重要课题。本文对露天深孔爆破中大块产生位置及原因进行了分析,并从炸药单耗、孔网布置、装药结构、堵塞长度、微差间隔、起爆方式等方面,总结出露天矿深孔爆破中优化爆破参数降低大块率的技术措施,在实践中取得较好的爆破效果。
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| 关 键 词： | 露天矿 深孔爆破 大块率 爆破参数 |
| 文章编号： | 1005-7854(2005)01-0013-03 |
SOME MEASURES OF LOWERING BOULDER YIELD IN LONG-HOLE BLASTING OF OPEN PITS |
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| YUAN Xiang-quan. SOME MEASURES OF LOWERING BOULDER YIELD IN LONG-HOLE BLASTING OF OPEN PITS[J]. Mining & Metallurgy, 2005, 14(1): 13-15,31 |
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| Authors: | YUAN Xiang-quan |
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| Abstract: | To lower the blasting boulder yield is an important technical consideration in designing rock blast program.Based on the analysis of situation and causes on which the blasting boulder occurs in borehole blasting of open pit,the paper determined some measures of lowering boulder yield of borehole blasting operation in mining open pits by taking explosive specific charge,blasthole spacing pattern,charge structure,stem length,millisecond interval and detonating into design of blasting program.The blasting with the controlling measures resulted in very satisfied effects in practice. |
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| Keywords: | Open pit Long-hole blasting Boulder yield Blasting parameter |
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