【作者】 杨清雷； 杨庆； 李宏； 杨彤；

【Author】 Yang Qinglei~1,Yang Qing~2,Li Hong~1,Yang Tong~1 (1.Engineering Research Institute,Shenyang Military Area Command, Shenyang 110162,China;2.Institute of Geotechnical Engineering, Dalian University of Technology,Dalian 116085,China)

【机构】 沈阳军区司令部工程科研设计所； 大连理工大学岩土工程研究所；

【摘要】 填埋场的衬里是影响渗滤液产生与渗滤液中污染物迁移的重要屏蔽系统。垃圾填埋场一般采用压实黏土衬里。黏土可吸附多种污染物。Cd（Ⅱ）广泛存在于垃圾填埋场渗滤液中,是一种常见的有毒重金属污染物。采用黏土与Cd（Ⅱ）作为研究对象,基于室内土柱模型试验,并根据污染物在土层中的迁移数据估算了弥散系数。通过试验和数值分析,可以得到黏土中Cd（Ⅱ）迁移的弥散系数值为6.0×10^-10m²/s,其值与参考文献中数值的范围相一致。更多还原

【Abstract】 The landfill liner is an important barrier system which affects the leachate generation and the migration of contaminants.Compacted clay liners are used in landfill for common.Many kinds of contaminants can be adsorpted by Clay.Cd（Ⅱ）is a kind of heavy metal contaminant which exist in landfill leachate for common.The hydrodynamic dispersion coefficient of Cd（Ⅱ）transport through clay is estimated according to column model test.A series of meaningful conclusions are obtained through the tests and numerical analyses.The hydrodynamic dispersion coefficient of Cd（Ⅱ）through clay is 6.OX 10^-10m²/s from column test which agrees with the repoered value.更多还原