尾矿库植物修复区土壤分维特征及其与物理力学性质的相关性  

Soil Fractal Characteristics and Their Correlation with Physical and Mechanical Propertiesin the Plant Remediation Area of Tailings Pond

作　　者：韩震宁 郝喆 宁方舟 杨青潮[3] HAN Zhenning;HAO Zhe;NING Fangzhou;YANG Qingchao(College of Environmental Sciences,Liaoning University,Shenyang 110036,China;Liaoning Geology and Mineral Resources Group Ecological Restoration Co.,Ltd.,Shenyang 110032,China;Department of Highway and Architecture,Shandong Vocational College of Transportation,Weifang 261206,China)

机构地区：[1]辽宁大学环境学院,辽宁沈阳110036 [2]辽宁省地矿集团生态修复有限责任公司,辽宁沈阳110032 [3]山东交通职业学院公路与建筑系,山东潍坊261206

出　　处：《矿业工程研究》2024年第4期64-70,共7页Mineral Engineering Research

基　　金：辽宁省科技计划资助项目(2019JH8/10300107,2020JH2/10300100)。

摘　　要：为探究尾矿库植物修复区土壤分维特征与物理力学性质的相关性,对尾矿库植物修复区土壤的微观结构和物理力学性质进行检测,获取并分析土壤分维特征及其与物理力学性质的相关性.本文选取本钢集团歪头山铁矿尾矿库现场4个不同台阶的土壤作为研究对象,通过扫描电子显微镜(SEM)获取土体微观结构,并采用图像处理软件进行定量分析;同时对土壤孔隙比、渗透系数、密度、内聚力、内摩擦角等物理力学参数进行检测,据此分析尾矿库植物修复区土壤分形维数与其物理力学参数之间的相关性.结果表明:土壤分形维数随着种植年限的增加而增加;土壤分形维数与土壤天然密度呈正相关,土壤分形维数对天然密度影响较显著;土壤分形维数与渗透系数呈不显著相关,与孔隙比、内摩擦角和内聚力呈显著负相关.研究结果可为尾矿库植物修复提供客观依据.To investigate the correlation between soil fractal characteristics and physical and mechanical properties in the plant remediation area of tailings ponds,the microstructure and physical and mechanical properties of the soil in the tailings pond plant remediation area were tested,and the soil fractal characteristics and their correlation with physical and mechanical properties were obtained and analyzed this article selects four different steps of soil from the Waitoushan iron mine tailings pond of Benxi Iron and Steel Group as the research object.The microstructure of the soil is obtained through scanning electron microscope(SEM),and the microstructure of the soil is quantitatively analyzed using image processing software.Physical and mechanical parameters such as soil porosity,permeability coefficient,density,cohesion,and internal friction angle are tested to analyze the correlation between the fractal dimension of the soil in the plant remediation area of the tailings pond and its physical and mechanical parameters The results showed that the fractal dimension of soil increased with the increase of planting years;The fractal dimension of soil is positively correlated with the natural density of soil,and as the fractal dimension of soil increases,it has a significant impact on the natural density;The fractal dimension of soil is not significantly correlated with permeability coefficient,but significantly negatively correlated with porosity,internal friction angle,and cohesive force The research results can provide objective basis for plant restoration of tailings ponds.

关 键 词：尾矿库植物修复区土壤 分形维数 物理力学参数 相关性 

分 类 号：TD824.7[矿业工程—煤矿开采]