摘要
在实验室中建立了一个具有填埋场典型构造的单元隔室系统 ,研究了盖层渗透性较强而衬层渗透性较弱和盖层、衬层渗透性均较弱两种不同防渗配置下系统内的水分运移规律。两种情况下 ,盖层底部与废物层交界处始终处于非饱和状态 ,造成通过盖层的水分入渗速率远远大于其设计入渗能力 (渗透系数 ) ,反映了强透水的废物层对盖层防渗性能的不利影响。两种配置在防止渗滤液穿透衬层而污染“地下水”方面并无显著差异 。
A laboratory scale model with typical landfill structures was built to simulate water movement in a landfill with either a medium permeability cover and a low permeability liner or both low permeability cover and liner. In both circumstances, the interface between the cover and the underlying waste was not saturated during the experiment, which results in a much higher infiltration rate through the liner than its designed infiltration capacity (permeability). The results show that high permeability waste negatively impact on the cover. There is no significant difference in the groundwater pollution due to the leachate for the two cases. The leachate control effectiveness depends mainly on the performance of the drainage layer between the waste and the liner.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第4期244-247,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家"八五"科技攻关项目! (85 -90 9-0 3-0 2 -0 3)
