磷铁矿床中深孔爆破设计方案优化研究  

Optimization study of medium-length hole blasting design in an Iron-Phosphate Mine

作　　者：贺贵旺 明建[1,2] 王通潮 毛市龙[1,2] HE Guiwang;MING Jian;WANG Tongchao;MAO Shilong(State Key Laboratory of High-Efficient Mining and Safety of Metal Mines,Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resource Engineering,University of Science and Technology Bei）ing,Beijing 100083,China)

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《有色金属（矿山部分）》2018年第4期46-48,共3页NONFERROUS METALS(Mining Section）

基　　金：国家自然科学基金资助项目(51374032);中央高校基本科研业务费专项资助(FRF-BD-16-001A)

摘　　要：针对应用无底柱分段崩落法开采的某磷铁矿床在爆破作业中存在的问题,对爆破能量的释放过程和由爆炸引起的岩石裂隙的生成过程进行了研究,进而优化了该矿无底柱分段崩落法采区中深孔内的装药结构、装药方式和起爆方式。工程实践结果表明:优化后的装药结构能够显著提高爆破对岩体的爆破效果,并有效地降低爆破大块产出率,从而能够为该磷铁矿床确定合理的中深孔爆破方案提供依据。According to the problems of blasting operation of caving with non-pillar sublevel caving mining method in a iron-phosphate mine,the study of the energy release process of explosive blasting and the process of rock fracture caused by blasting are carried out and then the charge structure and the explosive detonation mode are optimized.The industrial test results show that the blasting effect on the ore rock is improved and the blasting boulder yield is lowered by using the charge structure of explosive.Study results can provide the support for the explosive blasting design of the iron-phosphate mine.

关 键 词：无底柱分段崩落法 中深孔爆破 装药结构 爆破效果 

分 类 号：TD235.4[矿业工程—矿井建设]