掏槽挤压爆破技术在坝料开采中的应用  

Application of extrusion blasting technology in dam mining

作　　者：何家林 HE Jialin(Anhui Xiangke Chemical Co.,Ltd.,Anqing 246100,China)

机构地区：[1]安徽向科化工有限公司,安徽安庆246100

出　　处：《煤矿爆破》2020年第5期28-30,共3页Coal Mine Blasting

摘　　要：为完成特殊粒径要求的坝料开采,采用中排孔掏槽微差挤压爆破技术,合理选择爆破施工参数,并进行了有效的安全防护。实践证明,该爆破施工方法能有效降低大块率,爆破后块度均匀,爆堆合理,在控制飞石和降低爆破成本方面具有一定的效果,可为类似工程开采提供参考。In order to complete the mining of dam materials with special size requirements,the medium-row hole cutting millisecond extrusion blasting technology is adopted,the blasting construction parameters are reasonably selected,and the effective safety protection is carried out.Practice proves that this blasting construction method can effectively reduce large lump rate,the rock size is uniform after blasting,and the blasting pile is reasonable.It has certain effect in controlling flying stones and reducing blasting cost,which can provide a reference for similar engineering mining.

关 键 词：深孔爆破 掏槽爆破 微差挤压 大块率 

分 类 号：TD235[矿业工程—矿井建设]