through the vadose zone can effectively remove the harmful substances in waste water and prevent groundwater pollution.
污水经过包气带,能有效地去除污水中的有害物质,防止地下水污染。
the results show that significant vacuum can be generated in the vadose zone of the column with a finer layer on the top.
结果表明当粗砂上部存在细砂层时,排水在砂柱包气带中产生了显着的真空。
the vacuum in the vadose zone is closely related to the falling rate of the surface of saturation.
理论分析还表明,砂柱包气带中的真空与饱和非饱和带分界面的下降速率密切相关。
the key to modeling the vadose zone is the ability to predict an accurate surface boundary condition.
计算边界面上的流量:对渗流区域进行建模分析的关键问题是预测準确的面边界条件。
standard guide for decommissioning of ground water wells, vadose zone monitoring devices, boreholes, and other devices for environmental activities.
测定环境放射性物质用地下水井,上层滞水带监测装置,地上凿穿孔及其他设备的交付使用的标準指南。
theoretical analyses based on the vba program show that there is a substantial amount of water in the vadose zone at earlier times of drainage.
基于vba程序的理论分析表明,在排水早期,砂柱包气带中存在大量的水。
the paper introduces seven factor of drastic model: depth of water table, net recharge, aquifer media, soil media, topography, impact of vadose zone and hydraulic conductivity.
前言:介绍了dr ast ic模型的七个评价因子:地下水埋深、含水层凈补给量、含水层介质类型、土壤类型、地形坡度、包气带介质i的影响和含水层的导水系数。
through the test of two sand columns for comparing, the effect on removal of pollutants in landfill leachate by biological effect in sand layer of vadose zone was studied.
评述了铬在土壤及地下水中迁移转化的主要方式,着重讨论了吸附作用、氧化还原作用和生物作用对铬迁移转化的影响。
thus, it is considerably significant to study the vadose zone moisture distribution and dynamic characteristic under the condition of coal mining subsidence in this area.
因此在该区研究采矿塌陷条件下包气带土壤水分布及动态变化特征具有重要意义。