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不同入渗水头条件下壤砂土的一维垂直入渗特性/One-dimensional vertical infiltration characteristics of loamy sand at different infiltration heads[J]
Authors
CHEN Yong-bao
HU Shun-jun
+11 more
LUO Yi
TIAN Chang-yan
YIN Chuan-hua
中国科学院大学,北京100049
中国科学院新疆生态与地理研究所荒漠与绿洲生态国家重点实验室,新疆乌鲁木齐830011
尹传华
湖北煤炭地质125队,湖北宜昌443003
田长彦
罗毅
胡顺军
陈永宝
Publication date
1 January 2014
Publisher
Abstract
通过室内垂直入渗试验,分析了入渗水头对新疆喀什市塔什库尔干县壤砂土一维垂直水分入渗特性的影响.结果表明:累计入渗量与时间的关系符合Kostiakov-Lewis模型和Philip模型,其模型参数A值和吸渗率S随入渗水头的增大而增大,呈良好的线性关系,入渗系数与入渗指数随入渗水头增加呈相反的变化趋势;湿润锋推进距离与时间呈幂函数关系,参数m值随着入渗水头增加而增大,参数n在数值上等于第10个单位时间末和第1个单位时间末湿润锋推进距离比值的常用对数;累计入渗量与湿润锋呈线性关系,其斜率等于湿润区平均含水率与初始含水率之差,且随入渗水头的增大而增大
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Last time updated on 29/11/2016