中国工程科学Issue(11)：48-52,57,6.
地下矿山中深孔落矿爆破块度控制技术研究
Study on blasting fragmentation control for moderate deep hole in underground mine
摘要
Abstract
The scallop medium-length hole blasting mining method used in Dahongshan Cop-per Mine accounted for more than 61 % of the total amount of mining,but the large boulder yield restricted the intensity of ore supply for mines,and the average boulder yield was as high as 22.7%. In order to develop the mine production efficiency,the circular medium-length hole blasting technology was proposed and field tests were carried out. The test results showed that circular medium-length hole blasting mining can reduce the average boulder yield to 10.3 %. Compared with the traditional scallop medium-length hole blasting mining,the average boulder yield was decreased by 12.4%. The daily yield of ore for the panel on duty was increased by 152.29 t,and the growth rate was 51.1%. The new technology can reduce the time for the han-dling of large pieces and the consumption of explosives and detonators for recrushing,and in-crease the efficiency of mining while reduce the mining cost,which has received good blasting effects.关键词
扇形中深孔爆破/环形中深孔爆破/大块率/爆破效果Key words
scallop medium-length hole blasting/circular medium-length hole blasting/lump ore/blasting effect分类
矿业与冶金引用本文复制引用
赵艳伟,何冬梅,李祥龙,刘俊轩..地下矿山中深孔落矿爆破块度控制技术研究[J].中国工程科学,2014,(11):48-52,57,6.基金项目
国家自然科学基金项目（51304087）；云南省基金项目 （）
