露天矿大区多排微差爆破技术的研究与实践A STUDY AND PRACTICE OF LARGE SCALE AND MULTIPLE ROW MILLISECOND BLASTING IN OPEN PIT IRON MINE
廖先葵，李明俭
Liao Xiankui(Changsha Research Institute of Mining and Metallugy)Li Mingjian(Nanfen Iron Mine of Benxi Iron & Steel Company);
摘要(Abstract)：
论述了大区多排深孔微差爆破的合理规模、改善爆破破碎质量的途径和异步分区起爆与大规模干扰降震方案。八次大区微差爆破生产试验结果表明：大块率降低８３％，平均降震率达２８．６％，并显著减少了根底。
This paper discusses the reasonable scale of massive multiple row millisecond blasting, approaches to improving fragmentation quality,and options for reducing vibration by asynchronous zoning initation with large scale interference,Production tests of 8 large scale millisecond blasts showed good results,such as reducing boulder percentage by 83%, vibration by 28.6%with toe rock dispeled.
关键词(KeyWords)：
深孔爆破，露天采矿，大区多排微差爆破，干扰降震
Long-hole blasting Open pit mining Mssive multiple row millisecond blasting Vibration reduction by interference
基金项目(Foundation): 国家“七五”科技攻关项目
作者(Authors):
廖先葵，李明俭
Liao Xiankui(Changsha Research Institute of Mining and Metallugy)Li Mingjian(Nanfen Iron Mine of Benxi Iron & Steel Company);