崩落矿岩散体流动规律研究

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英文篇名：Study on Flowing Law of Caved Ore-Rock Bulk 中文刊名：金属矿山 英文刊名：Metal Mine 作者：吴爱祥 ; 朱志根 ; 习泳 ; 张旭升 英文作者：Wu Aixiang Zhu Zhigen Xi Yong Zhang Xusheng(Central South University) 中文关键词：孔隙 ; 矿岩流动性 ; 放矿 ; 渗透作用 英文关键词：Pore ; Fluidity of ore-rock ; Ore drawing ; Penetration function 出版日期：2006-05-15 机构：中南大学,中南大学,中南大学,中南大学, 年：2006 期：05 出版单位：金属矿山

摘要

从崩落矿岩散体物理力学性质出发,对矿岩散体流动规律进行了理论分析,把矿岩散体流动规律研究分为两个过程:整体流动和细小颗粒渗透流动。通过试验探明了放出体形和大小受矿石块度组成的影响情况;同时,采用不同矿石颗粒和废石颗粒组成,对覆盖岩层下放矿进行室内试验,分析了废石层细小颗粒渗透的过程和机理,以及细小颗粒渗透作用对放矿贫化的影响,为放矿贫化研究提供理论和试验依据。
A theoretic analysis was made of the flowing law of caved ore-rock bulk based on the physical and mechanical properties of the bulk.The study was divided into two parts: the whole bulk flowing and the penetration flowing of fine particles.The effect of the size composition of ore-rock on the shape and size of the ejective body was found out through the experiment.Meanwhile,the process and mechanism of the fine particle penetration through the rock layer and its effect on the dilution in ore drawing were studied through the indoor test on under-overburden ore drawing using different size compositions of ore and rock particles, thus providing the theoretical and test basis for the study on dilution in ore drawing.

引文

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