大孔距小抵抗线爆破技术在石灰石矿的应用  

Application of Large Holespacing and Small Burden Blasting Technology in Limestone Mine

作　　者：葛勇[1] 题正义[1] 

机构地区：[1]辽宁工程技术大学工程爆破所,123000

出　　处：《天津冶金》2005年第1期37-38,共2页Tianjin Metallurgy

摘　　要：大孔距小抵抗线爆破技术使爆破漏斗角增大,产生有利于反射拉应力增加及速度场分布的弧形自由面,爆破能量利用率高,爆破效果好。鸡西露天石灰石矿爆破以8 m×2.3 m大孔距小抵抗线的孔网取代了原来的4.5 m×4 m的孔网参数,进行了多排孔微差爆破,取得了明显的经济效益。Large holespacing and small burden blast can enlarge the angle of crater, produce an arc free face beneficial to the intensification of reflecting tensile stress and the distribution of velocity field, and enhance the utilization of blasting energy and improve blast efficiency. The hole pattern of 8 m×2.3 m were used to perform the multiple-row holes millisecond blasting. The remarkable economic benefit is achieved.

关 键 词：大孔距 抵抗线 石灰石矿 爆破漏斗 爆破技术 爆破效果 孔网参数 多排孔 露天 弧形 

分 类 号：TD235[矿业工程—矿井建设]