浅析桦树沟铁矿中深孔爆破推排产生的原因  

Analysis on the Pushing Causes of Medium and Deep Hole Blasting in Huashugou Iron Mine

作　　者：王开鹏 Wang Kaipeng(Jingtieshan Mining Company of Hongxing Iron&Steel Co.Ltd.,Jiuquan Iron and Steel(Group)Corporation,Jiayuguan,Gansu,735100)

机构地区：[1]酒钢集团宏兴股份公司甘肃镜铁山矿业有限公司,甘肃嘉峪关735100

出　　处：《酒钢科技》2022年第2期29-34,共6页

摘　　要：镜铁山桦树沟矿属于急倾斜厚矿体,矿石和围岩稳定。矿床均采用无底柱分段崩落法开采,中深孔爆破采用多段微差或同段爆破方式进行起爆,但由于局部地方地质条件发育明显,中深孔凿岩时跑眼严重等因素存在,极易在中深孔爆破后产生推排、悬顶等问题。本文通过对桦树沟矿中深孔爆破产生推排和悬顶的成因进行研究分析,得出相关措施。Huashugou mine belongs to steeply inclined thick ore body with stable ore and surrounding rock.All ore deposits are mined by sublevel caving without sill pillar,and mediumdeep hole blasting is initiated by multi-stage micro-difference or same-stage blasting.However,due to obvious local geological conditions and serious hole running in medium-deep hole drilling,it is easy to cause such problems as pushing ore and overhanging after medium-deep hole blasting.This paper studies and analyzes the causes of pushing ore and overhanging caused by medium-deep hole blasting in Huashugou mine and obtains relevant measures.

关 键 词：无底柱分段崩落法 中深孔爆破技术 矿块 数码电子雷管 推排 

分 类 号：TD8[矿业工程—矿山开采]