赵文,张智宇,李小双,杨世飞,李锡斌

• 1:昆明理工大学国土资源工程学院
• 2:昆明理工大学爆破新技术应用研究所
• 3:国家磷资源开发利用工程技术研究中心
• 4:云南磷化集团有限公司

摘要(Abstract)：

为改善尖山磷矿爆破质量、提高生产效率、节约生产成本,结合矿山生产进行多次试验,与原矿山爆破开挖方式对比分析,确定了更适合该矿山生产的宽孔距小抵抗线爆破方式。对大块率的统计和对振动的监测表明:炮孔密集系数m为2时,五次试验的大块率比实验前矿山原方案的大块率分别降低了10.4%、16.7%、15.6%、11.5%和13.5%,且大块的最大外形尺寸比试验前大块的最大外形尺寸总体上要小;新爆破方式下单响药量增加,但实测振动速度与原方案产生的振动速度基本持平,振动主频也与原方式下相近。试验开挖的过程中没有出现大块根底和超挖现象,优化了矿山爆破开挖方案。

关键词(KeyWords)： 宽孔距小抵抗线;炮孔密集系数;大块率;爆破振动

Abstract:

Keywords:

基金项目(Foundation): 云南省应用基础研究项目(2013FZ036)

作者(Author): 赵文,张智宇,李小双,杨世飞,李锡斌

参考文献(References)：

• [1]张鑫,舒大强.宽孔距爆破法数值模拟及破岩机理分析[J].爆破,2012,29(4):42-45.[1]ZHANG Xin,SHU Da-qiang.Numerical simulation and mechanism analysis of rock fragmentation of wide holedistance blasting[J].Blasting,2012,29(4):42-45.(in Chinese)
• [2]邓正道.宽孔距微差爆破机理及其合理的孔距与排距[J].爆炸与冲击,1988,8(2):152-158.[2]DENG Zheng-dao.Mechanism of wide spacing short delay blasting and its proper burden and spacing of the holes[J].Explosion and Shock Waves,1988,8(2):152-158.(in Chinese)
• [3]宗琦,王从平.岩石松动爆破炮孔密集系数研究[J].爆破,2001,18(1):1-4.[3]ZONG Qi,WANG Cong-ping.Investigation and application of large spacing loose blasting in rock[J].Blasting,2001,18(1):1-4.(in Chinese)
• [4]王伟,王奇志,石露,等.爆炸荷载下岩石I型微裂纹动态扩展研究[J].岩土力学与工程学报,2014,33(6):1194-1202.[4]WANG Wei,WANG Qi-zhi,SHI Lu,et al.Dynamic extension of mode I micro-cracks of rocks under blasting loading[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(6):1194-1202.(in Chinese)
• [5]王晓帆.复杂条件下多种控制爆破技术的综合应用[J].爆破,2014,31(2):149-152.[5]WANG Xiao-fan.Comprehensive application of multiple controlled blasting technique under complicated condition[J].Blasting,2014,31(2):149-152.(in Chinese)
• [6]张亚宾,甘德清,卢宏建,等.庙沟铁矿露天转地下开采爆破参数优化[J].金属矿山,2015(7):30-33.[6]ZHANG Ya-bin,GAN De-qing,LU Hong-jian,et al.Blasting parameter optimization research of Miaogou Iron Mine from open-pit to underground mining[J].Metal Mine,2015(7):30-33.(in Chinese)
• [7]刘倩,吕淑然.露天台阶爆破毫秒延时间隔时间研究[J].工程爆破,2014,20(1):54-58.[7]LIU Qian,LV Shu-ran et al.Resaerch on the millisecond delay interval time of open-pit bench blasting[J].Engineering Blasting,2014,20(1):54-58.(in Chinese)
• [8]龚敏,邱燚可可,李永强,等.定制雷管微差时间实测与识别法在城市隧道爆破设计中的应用[J].岩石力学与工程学报,2015,34(6):1179-1187.[8]GONG Min,QIU Yi-keke,LI Yong-qiang,et al.Application of measuring and identifying detonation time of customized detonnator in blasting design of urban tunnels[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(6):1179-1187.(in Chinese)
• [9]陈庆凯,孙俊鹏,李松鹏,等.基于高速摄影的露天矿山爆破效果评价[J].爆破,2012,29(3):31-34.[9]CHEN Qing-kai,SUN Jun-peng,LI Song-peng,et al.Evaluation of blasting effect of open-pit mine base on high-speed video[J].Blasting,2012,29(3):31-34.(in Chinese)
• [10]张智宇,刘殿柱,马军,等.爆破振动荷载作用下露天矿高边坡动态响应分析[J].防灾减灾工程学报,2015,35(3):374-377.[10]ZHANG Zhi-yu LIU Dian-zhu,MA Jun,et al.Dynamic response analysis of high open-pit slope under blasting vibration load[J].Journal of Disaster Prevention and Mitigation Engineering,2015,35(3):374-377.(in Chinese)