摘要
泥岩作为一种露天矿常见的岩石类型可作为排土场地层重构的隔水材料,利用自制土柱装置,按照正交实验设计原理,开展以土-泥岩混合体中的泥岩掺杂比例、泥岩颗粒度、土柱压实度、灌水量为可变因素的土柱渗透试验,通过观测湿润锋、土柱液面及烧杯积水高度的变化规律,探索土-泥岩混合体渗透速率及涵水率的渗透特性.结果表明,泥岩掺杂比例越高颗粒度越小,压实度越高,整体渗透速率越低,而灌水量越高混合体涵水率越高,此结果对露天矿排土场表层地层重构具有重要的参考价值.
Abstract
Mudstone,as a common rock type in open-pit mines,can be used as a water barrier material for the reconstruction of soil layers in waste disposal sites.The study uses a self-made soil column device,and follows the principle of orthogonal experimental design to carry out soil column permeability tests in soil mudstone mixtures with variable factors,such as mudstone doping ratio,mudstone particle size,soil column compaction degree,and water injection amount.By observing the changes in wetting front,soil column liquid level,and beaker water accumulation height,the permeability characteristics of soil mudstone mixtures,such as permeability rate and water retention rate,are explored.The results show that the higher the proportion of mudstone doping is,the smaller the particle size,and the higher the compaction degree is,the lower the overall permeability rate is.While the higher the water injection amount is,the higher the water retention rate of the mixture is.The results have important guiding significance for the reconstruction of the surface strata of the open-pit mine waste dump.
基金项目
新疆维吾尔自治区自然科学基金资助项目(2021D01B34)
自治区高校基本科研业务费科研项目(XJEDU2024J126)
NETL
NSTL
万方数据