深部迎采沿空巷道切顶护巷技术研究  

Study on Technology of Roof Cutting and Roadway Protection in Deep Gob-side Entry

作　　者：刘金虎[1] LIU Jin-hu(Technical Center of Xuzhou Mining Group Co.,Ltd.,Xuzhou,Jiangsu,221001)

机构地区：[1]徐州矿务集团有限公司技术中心

出　　处：《煤炭科技》2019年第6期46-47,共2页Coal Science & Technology Magazine

摘　　要：通过对沿空迎采巷道切顶护巷技术研究,合理确定钻孔组合布置及爆破切顶的关键参数,工作面回采后顶板沿爆破线断裂,有效解决了沿空巷道围岩受压变形失稳的难题,降低了修护成本和准备时间,实施效果和效益显著。Through the research on the technology of roof cutting and roadway protection in the gob-side entry,the key parameters of the combined arrangement of boreholes and blasting roof cutting were reasonably determined.The roof of the working face is broken along the blasting line after mining,which effectively solves the problem of the surrounding rock deformation and instability in the gob side entry,reduces the maintenance cost and preparation time,and has significant implementation effect and benefit.

关 键 词：沿空掘巷 切顶卸压 预裂爆破 钻孔参数 

分 类 号：TD322[矿业工程—矿井建设]