崩落矿岩散体流动规律研究  

Study on Flowing Law of Caved Ore-Rock Bulk

作　　者：吴爱祥[1] 朱志根[1] 习泳[1] 张旭升[1] 

机构地区：[1]中南大学

出　　处：《金属矿山》2006年第5期4-6,45,共4页Metal Mine

基　　金：国家杰出青年科学基金项目(50325415)。

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.

关 键 词：孔隙 矿岩流动性 放矿 渗透作用 

分 类 号：TD313.7[矿业工程—矿井建设]