煤矿井下巷道爆破方案的优化研究  

Study on Optimization of Blasting Scheme of Underground Roadway in Coal Mine

作　　者：林维山 Lin Weishan(Huayang No.5 Coal Mine,Shanxi Yangquan 045000)

机构地区：[1]华阳五矿,山西阳泉045000

出　　处：《山东煤炭科技》2021年第7期226-227,233,共3页Shandong Coal Science and Technology

摘　　要：针对华阳五矿井下回风顺槽爆破断面效果差、岩体破碎率高、爆破效率低的情况,提出了一种新的井下巷道爆破方案。通过合理布置爆破孔分布、降低爆破孔数量、减少爆破孔内的装药量,同时通过对辅助孔实施隔孔装药的方案实现了一次爆破成巷率提升67.4%,爆破后的大块率降低79.3%。In view of the poor blasting cross-section effect,high rock fragmentation rate and low blasting efficiency of the underground air return chute in Huayang No.5 Coal Mine,a new blasting scheme for underground roadway is proposed.By reasonably arranging the distribution of blasting holes,reducing the number of blasting holes,reducing the amount of charge in the blasting holes,and by implementing the plan of charging the auxiliary holes through separate holes,the lane forming rate of one blasting is increased by 67.4%,and the block rate after blasting is reduced by 79.3%.

关 键 词：爆破 破碎率 爆破孔分布 

分 类 号：TD235[矿业工程—矿井建设]