摘要
本文针对杨家坝铁矿矿岩松软破碎、炮孔变形破坏严重的状况,在现场调查、试验及理论分析的基础上,采取了加大孔径、炮孔应力解除、微差爆破、加长堵塞、缩短炮孔存在时间以及进行了凿岩爆破参数优化等一系列措施,解决了生产中出现的问题,取得了较满意的效果。
Based on the site investigation,test and theory analysis for the ore-rock's soft and fracture feature and serious hole deformation in yanjiaba iron mine, a series of measures of increasing drill hole diameter, removing hole stress,using delay blast, increasing length of plug,reducing existing time of drill hole and optimizing blast parameters are used. As a result,the arisen problems in the production are solved and relatively satisfied effect are obtained.
出处
《金属矿山》
CAS
北大核心
1993年第10期9-11,44,共4页
Metal Mine
