文献类型：期刊文献

中文题名：基于正交设计的露天含水炮孔冲孔效应敏感度分析

英文题名：Sensitivity Analysis of Punching Effect of Water-bearing Blast Hole in Open Air Based on Orthogonal Design

作者：李恒 张智宇 李祥龙 雷振

第一作者：李恒

机构：[1]昆明理工大学公共安全与应急管理学院,昆明650093;[2]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;[3]昆明理工大学国土资源与工程学院,昆明650093;[4]贵州理工学院矿业工程学院,贵阳550000

第一机构：昆明理工大学公共安全与应急管理学院,昆明650093

年份：2022

卷号：12

期号：4

起止页码：91-99

中文期刊名：有色金属工程

外文期刊名：Nonferrous Metals Engineering

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：国家自然科学基金资助项目(52064025)。

语种：中文

中文关键词：含水炮孔;冲孔效应;现场试验;正交设计;敏感度分析

外文关键词：water-bearing blast hole;punching effect;field test;orthogonal design;sensitivity analysis

摘要：露天水孔冲孔效应影响因素繁多,研究各因素对冲孔效应敏感度控制意义重大。基于正交设计原理,在曼家寨采场进行9次现场爆破试验,以冲孔率、填塞体平均冲孔高度和填塞体平均冲孔加速度为试验指标,利用SPSS统计学软件在极差分析基础上引入方差分析,研究炸药单耗、填塞长度、填塞粒径和孔距等4个可能影响试验指标的因素控制冲孔效应敏感度大小。结果表明:仅有填塞粒径和填塞长度对冲孔率有显著影响,且最为显著的因素为填塞粒径;填塞长度对填塞体平均冲孔高度有显著影响;填塞粒径和炸药单耗对填塞体平均冲孔加速度有显著影响,且填塞粒径为最关键影响因素。得出开采时最优爆破参数组合,炸药单耗取0.35 kg/m^(3)、填塞长度取5 m、填塞粒径取5~10 mm、孔距取7 m,将参数代入现场生产爆破后冲孔率下降了79.75%,对采场后续生产爆破和类似工程实践具有指导性意义。
There are many factors influencing the punching effect of open-air water holes,and it is of great significance to study each factor to control the sensitivity of the punching effect.Based on the principle of orthogonal design,9 on-site blasting tests were carried out in Manjiazhai stope.Punching rate,average punching height of packing body and average punching acceleration of packing body were used as test indicators,and SPSS statistical software was used to introduce range analysis.With analysis of variance,four factors,including explosive unit consumption,packing length,packing particle size and hole spacing,which may affect the test index,are studied to control the sensitivity of the test index.The results show that only the packing particle size and packing length have a significant influence on the punching rate,and the most significant factor is the packing particle size.The packing length has a significant influence on the average punching height of the packing body,and the packing particle size and the unit consumption of explosive have a significant effect on the packing.The average punching acceleration of the volume has a significant impact,and the packing particle size is the most critical influencing factor.The optimal blasting parameter combination during mining in Manjiazhai stope is obtained.The unit explosive consumption is 0.35 kg/m^(3),the packing length is 5 m,the packing particle size is 5-10 mm,and the hole spacing is 7 m.The parameters are substituted into the on-site production blasting.The post-punching rate dropped by 79.75%,which is of guiding significance for subsequent production blasting and similar engineering practices in the stope.