长江科学院院报2012，Vol.29Issue(2)：37-40,59,5.
模拟渗滤液和压力对压实黏土衬垫渗透性影响的试验研究
Test on the Effect of Simulated Leachate and Pressure on the Permeability of Compacted Clay Liners
摘要
Abstract
The permeability of liner, which determines the effectiveness of landfill, is influenced considerably by leachate and pressure condition. In light of the actual leachate and pressure state of landfill liner, the effect of simulated leachate concentration and vertical pressure on the hydraulic conductivity of compacted clay liner is studied. When water is substituted by simulated leachate, which, in this case, is CaCl2 solution, the hydraulic conductivity increases three times at the most; while when vertical pressure doubles from 200kPa to 400kPa, the hydraulic conductivity reduces about an order of magnitude. Compression and consolidation tests and dual-factor variance analysis confirm that the hydraulic conductivity is remarkably affected by vertical pressure compared with simulated leachate. It is suggested that the effect of vertical pressure on hydraulic conductivity should be taken into account in the design and assessment of liners.关键词
压实黏土衬垫/渗透系数/渗滤液/竖向压力Key words
compacted clay liner/ hydraulic conductivity/ leachate/ vertical pressure分类
建筑与水利引用本文复制引用
何俊,肖衡林,孔祥怡..模拟渗滤液和压力对压实黏土衬垫渗透性影响的试验研究[J].长江科学院院报,2012,29(2):37-40,59,5.基金项目
国家自然科学基金资助项目(51008120) （51008120）
湖北省教育厅优秀中青年项目(Q20101408) （Q20101408）
武汉市青年科技晨光计划项目(200950431166) （200950431166）
