含水炮孔台阶爆破漏斗试验研究  

Study on crater test of bench blasting with water-bearing blasthole

作　　者：王浩 王建国[2] 黄永辉[3] 张智宇[2,4] WANG Hao;WANG Jian-guo;HUANG Yong-hui;ZHANG Zhi-yu(Faculty of Public Safety and Emergency Management,Kunming University of Science and Technology,Kunming 650093,China;School of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Electrical Engineering College,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space,Kunming 650093,China)

机构地区：[1]昆明理工大学公共安全与应急管理学院,昆明650093 [2]昆明理工大学国土资源与工程学院,昆明650093 [3]昆明理工大学电力工程学院,昆明650093 [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,昆明650093

出　　处：《工程爆破》2021年第2期43-50,共8页Engineering Blasting

基　　金：国家自然科学基金资助项目(52064025)。

摘　　要：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 m 3,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 m 3,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：含水炮孔 爆破漏斗 爆破参数优化 相似准则 

分 类 号：TD235[矿业工程—矿井建设]