极不稳定岩土巷道预支护技术研究  

Study of temporary support technology in roadway surrounded by highly unstable wallrock

作　　者：余伟健[1] 明世祥[1] 黄武胜[1] 尹志军[1] 

机构地区：[1]北京科技大学,北京100083

出　　处：《矿业工程》2004年第5期7-9,共3页Mining Engineering

摘　　要：详细评述了极不稳定岩土巷道预支护技术的适用性及特点 ,并结合金山店铁矿粉矿巷道支护实践 ,研究采用超前预切槽喷注混凝土成拱技术 ,解决了自稳时间极短围岩中巷道开挖难支护的问题。The need and properties of temporary support technology in roadway surrounded by highly unstable wallrock are discussed.Taking roadway of Jinshandian Iron Ore Mine as example, the technology of pre-broaching—arch shotcreting is explained.Using this technology,the difficulty of roadway digging in unstable rock can be solved satisfactorily.

关 键 词：岩土巷道 预支护 铁矿 混凝土 围岩稳定 

分 类 号：TD353.3[矿业工程—矿井建设]