介质筛护岸技术及其对桃花江的补水功能EFFECTS OF MEDIA SIEVE BANK ON FLOOD DETENTION AND DROUGHT RELEASE IN TAOHUA RIVER
左华
摘要(Abstract)：
通过河床介质分布特征的分析,提出了介质筛护岸技术.通过现场试验,获得了桃花江近岸土壤的水分特征曲线,进而设计了渗流、稳定和疏干过程模拟方案,对3个连续过程中的水位变化进行了分析;计算了护岸含水层的给水度(0.14~0.21之间),如果将7.364 km的石砌河堤改造为介质筛岸堤,设定两岸50 m宽为有效补给区时,枯水季节潜水补给量接近1 600 m3/d,占桃花江近期补水规划的1.8%,说明介质筛岸堤具有明显的迟滞补枯作用.
关键词(KeyWords)： 介质筛;生态护岸;滞洪补枯;给水度
基金项目(Foundation): 国家高技术研究发展计划(863计划)(2003AA601060)资助项目
作者(Author): 左华
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