摘要
建立了一维垂直非饱和土壤水分运动的数学模型,并采用有限差分方法对模型进行数值求解,模拟了不同降雨强度条件下水分分布的动态规律,数值模拟结果表明:降雨强度的大小直接影响着土壤水分湿润锋的分布,并且所建立的模型与实验测试结果吻合较好,验证了模型的可靠性,从而可为定量化研究填埋气体和浸出液释放提供理论根据。
An one-dimensional vertical unsaturated soil moisture movement model has been established. Solutions to the mathematical mode are accomplished by the finite difference method. The numerical model is used to predict moisture distribution law under different precipitation intensity. Results show that precipitation intensity has a large impact on moisture wetting front distribution, with reasonable agreement between model simulation and measured data. It provides theoretical evidence for quantitative assessment of potential effects of landfill gas and on leachate emission on ecological environment pollution.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2004年第5期618-620,共3页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金资助项目(50309015)
农业部农业环境与农产品安全重点开放实验室项目(C2004A01)
关键词
垃圾填埋场
土壤水分
降雨强度
数值模型
湿润锋
solid waste landfill
soil moisture
precipitation intensity
numerical model
wetting front
