某矿高地应力采场爆破技术研究  

Research on Blasting Technology in High Ground Stress Stope of a mine

作　　者：苏丹 曹万宝 吴和平[2] SU Dan;CAO Wanbao;WU Heping(Hunan Chenzhou Mining Co.,Ltd.;Xinda Gold and Silver Development Center Co.,Ltd.)

机构地区：[1]湖南辰州矿业有限责任公司,湖南省419607 [2]鑫达金银开发中心有限责任公司

出　　处：《现代矿业》2021年第4期79-81,共3页Modern Mining

摘　　要：某矿最大开采深度超千米,采场稳定性受到高地应力和爆破振动影响较大,使用微差起爆可以降低应力波在高地压环境中的危害,也可以改善爆破效果。为此进行不同起爆方式的微差爆破技术现场试验,对合理的起爆形式和爆破参数进行探索。结果表明,使用微差爆破可以降低爆破振动,同时可以降低爆破后大块的产生。2种毫秒微差起爆均能够满足高地应力矿体的开采需求,在降低爆破振动的同时,井下资源开采"两率"指标也得到提高。The maximum mining depth of a mine exceeds one thousand meters,and the stability of the stope is greatly affected by high ground stress and blasting vibration.The use of millisecond initiation can reduce the harm of stress waves in a high ground pressure environment and improve the blasting effect.For this reason conduct field tests of millisecond blasting technology with different initiation methods to ex⁃plore reasonable initiation forms and blasting parameters.The results show that the use of millisecond blast⁃ing can reduce the blasting vibration and at the same time reduce the generation of large blocks after blast⁃ing.Both of the two kinds of millisecond initiation can meet the mining needs of high ground stress ore bod⁃ies.While reducing the blasting vibration,the"two rates"indicators of underground resource mining have also been improved.

关 键 词：缓倾斜矿体 高地应力 微差起爆 

分 类 号：TD235.4[矿业工程—矿井建设]