基于成控因子法汞矿渣胶结物质组合关系研究

通过对铜仁地区汞矿渣调查,胶结型汞矿渣主要由废弃矿渣、尾矿渣、胶结物三部分组成,分别对其物质构成进行了分析。基于此,采用成控因子法,结合现场胶结试验,确定了各因素对胶结物生长的敏感性大小,重要性依次为水文条件、堆积年限、通风、覆盖层厚度、层位类型、光照、孔隙率。最后,对胶结类型进行分组,分别为:A型全碎石粉渣胶结、B型局部软石碎石粉渣胶结、C型软石碎石粉渣胶结、D型含粉渣碎石胶结、E型全包式碎石胶结、F型接触式不规则碎石胶结、G型接触式球形碎石胶结;并探讨了胶结物的不同物质组合方式的胶结物含量。对汞矿渣胶结物质成分及其组合关系研究对矿渣堆积体稳定性防治具有重要的理论与工程意义。

A Study on Combination Relation of Cementing Substances in Mercury Slags Based on the Principal Component Analysis

According to field investigation of mercury slags in Tongren area, this paper revealed that dump slags, tailings and cementing substances are three major constituents of cemented mercury slags and analyzed the material compositions of each constituent. Based on this, by applying the principal component analysis and field cementing test, it identified the influence of each factor on the sensitivity of the development of cementing substances. In descending order of importance, these are hydrological condition, accumulation years, ventilation, overburden thickness, position types, light and porosity. Later on, cementing types of the mercury slags were grouped, which include A type powder cementing of total gravels, B type powder cementing of local soft rocks and gravels, C type powder cementing of soft rocks and gravels, D type gravel cementing with powder residue, E type all-inclusive gravel cementing, F type contact-type anomalous gravel cementing and G type contact-type spherical gravel cementing. Finally, the contents of cementing substances with different material compositions were explored. A study on the cementing substances in mercury slags and their composition relation will provide significant theoretical and engineering value to the prevention of slag accumulation stability.