摘要
人工湖建设可能引起地下水位的抬升,将对周边生态环境造成影响,如部分河岸区的浸没、土壤次生盐渍化、地下水质恶化、影响湖周高层建筑物的地基承载力等。在分析人工湖渗漏问题基础上, 提出了在不采取防渗措施和采取防渗措施两种不同情况下的成湖方案, 并进行了防渗方案的优选。用地下水数值模型MODFLOW和优化模型MODMAN对处于黄河冲积平原地区拟开挖人工湖进行了数值模拟及优化。结果表明,在龙湖运行时,只要人工湖的渗漏量控制在一定范围内,辅之于相应的湖体周边的降水措施,就可有效避免各种环境问题的出现。
The rise in shallow groundwater levels caused by the construction of an artificial lake will result in a series of environmental problems such as submersion of lakeshores and salinization of soils.The deterioration in groundwater quality, sometimes increases percolation through rock layers thereby causing changes in soil stresses. Based on seepage analysis of artificial lakes, different optimal projects are proposed by either adopting anti-seepage measures or not. Numerical simulations of shallow groundwater flow around the Dragon Lake artificial lake in the alluvial plains of the Yellow River was successfully made by using the MODFLOW and MODMAN models. The results indicate that the shallow groundwater resources are in an equilibrium state in present conditions. If infiltration intensity is given in some areas and the shallow groundwater table is controlled, some environmental problems can be solved in the Dragon Lake Region during running.
出处
《地学前缘》
EI
CAS
CSCD
北大核心
2005年第U04期107-111,共5页
Earth Science Frontiers
基金
国家自然科学基金项目(40372109)
关键词
地下水
人工湖
龙湖
入渗强度
优化
次生盐渍化
ground water
artificial lake
Dragon Lake
permeability intensity
optimization
secondary salinization
