矿岩中含水量与粉矿含量对放矿效果的影响

金属矿山 ›› 2025, Vol. 54 ›› Issue (11): 106-112.

矿岩中含水量与粉矿含量对放矿效果的影响

王勇强¹　张治强^1,2　吴晓然¹　孙赫阳¹　马绪骁¹　王薪荣¹

1.辽宁科技大学矿业工程学院,辽宁鞍山 114051;2.辽宁省金属矿产资源绿色开采工程研究中心,辽宁鞍山 114051

出版日期:2025-11-15 发布日期:2025-12-01
通讯作者: 王勇强(2000—),男,硕士研究生。
作者简介:张治强(1971—),男,教授,博士,硕士研究生导师。
基金资助:
国家自然科学基金项目(编号:52304087)。

Influence of Water Content and Powder Content in Ore Rock on Ore Drawing Effect

WANG Yongqiang¹　ZHANG Zhiqiang^1,2　WU Xiaoran¹　SUN Heyang¹　MA Xuxiao¹　WANG Xinrong¹

1.School of Mining Engineering,University of Science and Technology Liaoning,Anshan 114051,China; 2.Engineering Research Center of Green Mining of Mental Mineral Resources Liaoning Province,Anshan 114051,China

Online:2025-11-15 Published:2025-12-01

摘要/Abstract

摘要： 无底柱分段崩落法安全、高效、生产成本低,是我国众多金属矿山的主要开采方法之一。该方法采用中深孔爆破方式,矿岩破碎不均匀以及在放矿过程中,都会产生大量的粉矿,矿岩散体中的粉矿易受到水的影响,产生黏结力进而影响放矿效果。为分析矿岩中含水量与粉矿含量对无底柱分段崩落法放矿效果的影响,采用物理相似试验方法进行了研究。结果表明:① 含水量对于矿石回收率、放出矿岩量和贫化率均具有较大影响,而粉矿含量对矿石回收率和放出矿岩量影响较小,对贫化率影响较大。通过效应量指标对比分析,含水量对放矿效果的影响程度普遍大于粉矿含量。② 含水量与粉矿含量的交互作用对放矿效果的影响较为明显,当含水量为0%、粉矿含量为11%时, 矿石回收率最高;含水量为9%、粉矿含量为13%时,贫化率最大;含水量为15%、粉矿含量为17%时,放出矿岩量最多。通过平滑曲面坡度变化和颜色渐变程度分析,粉矿含量的影响程度小于含水量,与方差分析结论相符合。③ 废石漏斗随着含水量升高出现先减小再增大的变化特征。

Abstract: Non-pillar sublevel caving method is one of the main mining methods for many metal mines in China,which is safe,efficient and has low production cost.The medium-deep hole blasting method used in this method,the uneven crushing of ore and rock and the process of ore drawing will produce a large amount of powder ore.The powder ore in the ore rock bulk is easily affected by water,which will produce cohesive force and affect the ore drawing effect.In order to analyze the influence of water content and fine ore content in ore rock on the ore drawing effect of pillarless sublevel caving method,the physical simi larity test method was used for research.The results show that:① The water content has a great influence on the ore recovery rate,the amount of ore rock and the dilution rate,while the powder content has little effect on the ore recovery rate and the a mount of ore rock,and has a great influence on the dilution rate.Through the comparative analysis of effect quantity index,the influence of water content on ore drawing effect is generally greater than that of powder content.② The interaction between wa ter content and powder content has a significant effect on the ore drawing effect.When the water content is 0% and the powder content is 11%,the ore recovery rate is the highest.When the water content is 9% and the powder content is 13%,the dilution rate is the highest.When the water content is 15% and the powder content is 17%,the amount of ore rock is the most.Through the analysis of slope change and color gradient degree of smooth surface,the influence degree of powder content is less than that of water content,which is consistent with the conclusion in variance analysis.③ The waste rock funnel decreases first and then increases with the increase of water content.

中图分类号:

TD853

王勇强　张治强, 　吴晓然　孙赫阳　马绪骁　王薪荣. 矿岩中含水量与粉矿含量对放矿效果的影响[J]. 金属矿山, 2025, 54(11): 106-112.

WANG Yongqiang　ZHANG Zhiqiang, 　WU Xiaoran　SUN Heyang　MA Xuxiao　WANG Xinrong. Influence of Water Content and Powder Content in Ore Rock on Ore Drawing Effect[J]. Metal Mine, 2025, 54(11): 106-112.

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