王浩;王建国;黄永辉;张智宇;
WANG Hao;WANG Jian-guo;HUANG Yong-hui;ZHANG Zhi-yu;Faculty of Public Safety and Emergency Management, Kunming University of Science and Technology;School of Land Resources Engineering, Kunming University of Science and Technology;Electrical Engineering College, Kunming University of Science and Technology;Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space;

• 1:昆明理工大学公共安全与应急管理学院
• 2:昆明理工大学国土资源与工程学院
• 3:昆明理工大学电力工程学院
• 4:云南省中-德蓝色矿山与特殊地下空间开发利用重点实验室

摘要(Abstract)：

为优化含水炮孔装药条件下台阶爆破参数,改善露天矿含水炮孔台阶爆破效果,基于爆破漏斗理论,开展含水炮孔爆破漏斗现场试验,试验结果显示:单孔装药量为2 kg时,最佳炸药埋深为1.1 m,炸药临界埋深为1.92 m,最大爆破漏斗体积为1.47 m³,最佳爆破漏斗半径为1.2 m,最佳埋深比为0.57,岩体变形能系数为1.35;试验最佳孔距为1.8～2.4 m,最小抵抗线为2.7～2.9 m。依据相似法则换算得到优化后的露天台阶含水炮孔爆破参数为,单孔药量60 kg,孔距6 m,排距4 m。工程应用效果表明:炸药单耗q下降了24.2%,大块率下降了20.6%。研究结果可以为此类含水炮孔矿山爆破参数优化选取提供参考。
In order to optimize the parameters and improve the effect of bench blasting with charged in open-pit mines, based on the blasting funnel theory, the field test of the water-bearing blasting funnel is carried out. The test results show that when the single-hole test charge is 2 kg, the best explosive burial depth is 1.1 m, the explosive critical burial depth is 1.92 m, the maximum blasting funnel volume is 1.47 m3,最佳爆破漏斗半径为1.2 m,最佳埋深比为0.57,岩体变形能系数为1.35;试验最佳孔距为1.8～2.4 m,最小抵抗线为2.7～2.9 m。依据相似法则换算得到优化后的露天台阶含水炮孔爆破参数为,单孔药量60 kg,孔距6 m,排距4 m。工程应用效果表明:炸药单耗q下降了24.2%,大块率下降了20.6%。研究结果可以为此类含水炮孔矿山爆破参数优化选取提供参考。
In order to optimize the parameters and improve the effect of bench blasting with charged in open-pit mines, based on the blasting funnel theory, the field test of the water-bearing blasting funnel is carried out. The test results show that when the single-hole test charge is 2 kg, the best explosive burial depth is 1.1 m, the explosive critical burial depth is 1.92 m, the maximum blasting funnel volume is 1.47 m³, the best blasting funnel radius is 1.2 m, the best burial depth ratio is 0.57, and the deformation energy coefficient is 1.35. The best hole distance in the test is 1.8～2.4 m, and the minimum resistance line is 2.7～2.9 m. According to the similarity rule, the optimized water-bearing blasting parameters of the open-air bench are converted into single-hole charge 60 kg, hole spacing 6 m, and row spacing 4 m. Engineering application results show that: the unit consumption q of explosives has dropped by 24.2%, and the bulk rate has dropped by 20.6%. The research results can provide a reference for the optimal selection of blasting parameters in such water-bearing blasthole mines.

关键词(KeyWords)： 含水炮孔;爆破漏斗;爆破参数优化;相似准则
water-bearing blasthole;blasting crater;blasting parameter optimization;similarity criterion

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(52064025)

作者(Authors): 王浩;王建国;黄永辉;张智宇;
WANG Hao;WANG Jian-guo;HUANG Yong-hui;ZHANG Zhi-yu;Faculty of Public Safety and Emergency Management, Kunming University of Science and Technology;School of Land Resources Engineering, Kunming University of Science and Technology;Electrical Engineering College, Kunming University of Science and Technology;Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space;

DOI: 10.19931/j.EB.20200134

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