四老沟矿8103面深孔预裂爆破放顶技术应用  

Application of Deep-hole Presplitting Blasting Caving Technology for 8103 Working Face in Silaogou Colliery

作　　者：邵继华 Shao jihua(Jinneng Holding Coal Industry Group.,Datong,Shanxi 037003)

机构地区：[1]晋能控股煤业集团,山西大同037003

出　　处：《江西煤炭科技》2025年第1期41-43,47,共4页Jiangxi Coal Science & Technology

摘　　要：四老沟矿8103工作面顶板坚硬不易垮落,极易引发顶板事故,拟根据双向聚能预裂爆破技术原理,设计相应的爆破孔参数、炸药量、装药结构等。实施强制放顶后,现场窥视图表明,从炮孔口2.5 m处开始,随着距离炮孔底部的距离变小,预裂缝的宽度和深度在逐渐增加;现场实践中,8103工作面的坚硬顶板初次来压步距由62.61 m降低为23 m,预裂效果良好,保证了工作面的安全生产。Aiming at the susceptibility of roof accident due to the hard roof at 8103 working face in Silaogou Colliery,the author designs the corresponding blasting hole parameters,explosive quantity,charge structure according to the technical principle of bidirectional energy accumulation pre-spliting blasting,whose field view shows that the width and depth of the pre-crack increase gradually with the distance from the bottom of the hole to 2.5 m and the first pressing distance of hard roof decreases from 62.61 m to 23 m with good pre-cracking effect,ensuring the safe production of the working face.

关 键 词：坚硬顶板 双向聚能 预裂爆破 

分 类 号：TD353[矿业工程—矿井建设]