大红山铁矿无底柱分段崩落法悬顶处理研究及应用

现代矿业 ›› 2020, Vol. 36 ›› Issue (06): 72-.

大红山铁矿无底柱分段崩落法悬顶处理研究及应用

马关福徐万寿

玉溪大红山矿业有限公司

出版日期:2020-06-25 发布日期:2021-09-14

Study and Application on the Treatment of Suspended Roof of Dahongshan Iron Mine by #br# Sublevel Caving Without Bottom Column

Ma Guanfu Xu Wanshou

Yuxi Dahongshan Mining Co.,Ltd

Online:2020-06-25 Published:2021-09-14

摘要/Abstract

摘要： 大红山铁矿400万t/a二期采矿工程采用无底柱分段崩落法，30 m×20 m的高分段结构参数在国内类似矿山处于领先水平。受采矿方法影响，爆破后出现悬顶问题成为无底柱分段崩落法普遍存在的一大难题。为解决此难题，主要研究了悬顶产生的原因及利用周边进路的爆破震动自然下落处理悬顶的措施。经过在大红山铁矿的长期使用及验证，该方法具有安全可靠、低成本的特性，在悬顶处理措施中排列最佳，具有较好的推广应用价值。

关键词: 无底柱分段崩落法悬顶处理方案研究及运用

Abstract: The 4 million t/a secondstage mining project of Dahongshan Iron Mine adopts the highsegment structure parameters of the subcolumn sublevel caving method of 30 m×20 m,which has played a leading level in similar mines in China.Affected by mining methods,the problem of overhanging after blasting has become a common problem in the sublevel caving method without bottom pillar.In order to solve this problem,the main reasons for the occurrence of the suspended ceiling and the measures for the natural fall of the blasting vibration of the peripheral approach to treat the suspended ceiling are mainly studied.After longterm use and verification in Dahongshan Iron Mine,its safe,reliable and lowcost characteristics are best arranged in the suspension treatment measures and have good promotion and application value.

Key words: Sublevel collapse of bottomless columns,Hanging top,Treatment plan,Research and Application

马关福徐万寿. 大红山铁矿无底柱分段崩落法悬顶处理研究及应用[J]. 现代矿业, 2020, 36(06): 72-.

Ma GuanfuXu Wa nshou. Study and Application on the Treatment of Suspended Roof of Dahongshan Iron Mine by #br# Sublevel Caving Without Bottom Column[J]. Modern Mining, 2020, 36(06): 72-.

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