摘要
金岭铁矿侯庄矿区在炸药性能和装药结构发生变化后，为减少中深孔爆破大块，采取了适当加大炮孔密集系数ｍ值，采用孔底起爆加孔内双起爆药包相向同段起爆等措施，大块率由２５％左右降低到１０％以下。
After explosive properties and charging explosive structure are changed,for decreasing the big blasting block of medium-deep hole blasting the Houzhuang mine destrict of Jinling iron mine has taken some steps,for example to increase properly density factor value of blasting hole,etc The big block ratio is decreased from 25% to below 10%
出处
《山东冶金》
CAS
1998年第5期5-7,共3页
Shandong Metallurgy
关键词
中深孔爆破
爆破参数
起爆
大块率
铁矿
采矿
medium-deep hole blasting,blasting parameter,initeating method,big block ratio
