龙涛;余斌;胡建军;
LONG Tao,YU Bin,HU Jian-jun(Beijing General Research Institute of Mining and Metallurgy,Beijing 100044,China)

• 1:北京矿冶研究总院

摘要(Abstract)：

宜春钽铌矿原生产过程中,由于裂隙岩体大量存在以及爆破设计方法滞后,爆后矿石块度不理想,大块率、粉矿率偏高。本文分析了影响裂隙岩体爆破效果的因素,并通过数值模拟和工业试验,优化了爆破参数、装药结构和起爆网路,使大块率由原来的6%⁷%降低到1.6%,粉矿率由4%降低到2%,取得了显著的经济效益和社会效益。该项研究成果,可供类似矿山参考。
The original production process in Yichun Tantalum-Niobium Mine,due to the existence of a large number of fractured rock mass and the delayed blast design method,the ore block was not ideal,boulder frequency and powder ore rate were high.This paper analyzed the impact of fractured rock mass blasting effect factors,optimized the blasting parameters,the charge structure and the initiation network through numerical simulation and industrial test.It made the boulder frequency from 6%～7% to 1.6%,powder ore rate from 4% down to 2%,achieved remarkable economic and social benefits.The research results can also used in other mines with similar condition.

关键词(KeyWords)： 裂隙岩体;露天开采;大块率;工业试验;爆破参数优化
Fractured rock mass;Open mining;Boulder frequency;Industrial test;Optimization blasting parameters

Abstract:

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基金项目(Foundation):

作者(Authors): 龙涛;余斌;胡建军;
LONG Tao,YU Bin,HU Jian-jun(Beijing General Research Institute of Mining and Metallurgy,Beijing 100044,China)

参考文献(References)：

• (1)陈玉凯,代方军.空气底部间隔装药对爆破效果的影响[J].轻金属,2003(1):7-12.
• (2)谭卓英,张建国.露天深孔爆破大块率与爆破参数之间的关系研究[J].爆破,1999(4):15-20.
• (3)林爱民,马增光,徐全军,等.台阶爆破抵抗线对大块度影响试验研究[J].工程爆破,2006,12(2):36-39.
• (4)袁德海,邓守锋.改善岩体深孔爆破大块率的实践[J].煤炭科学,2001(2):37-39.
• (5)刘殿中.工程爆破实用手册[M].北京:冶金工业出版社,1999.
• (6)陈寿如,陈能革,邢东升.坚硬矿岩台阶深孔爆破降低大块率的综合措施[J].有色金属(矿山部分),2002(2):34-36.