摘要
通过分析畦田水流特征,结合Horton入渗公式,在满宁公式的基础上,根据水量平衡原理建立了利用水流推进过程确定土壤入渗参数和田面糙率系数的方法。同时,利用实验资料对所提出的方法进行了检验,结果表明利用该方法所推求的入渗参数和糙率系数,零惯量模型预测的推进过程和消退过程与实测数据相一致。
Based on the analyses of water stream and irrigation advance, two functions were given to describe irrigation advance and water depth profile. A method for estimation of Manning roughness coefficient was developed through adopting Manning equation for water flow. Combining with Horton infiltration equation, the solution for estimation of infiltration properties was established based on the water volume balance. The method was evaluated by the field experimental data, and the results indicate that the predicted irrigation advance and recession of SRFR4.06 with the parameters obtained by the new method go well with the observed.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2005年第12期52-55,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
中国科学院"百人计划"项目(2004109)
关键词
水流推进
土壤入渗
Horton入渗公式
田面糙率系数
irrigation advance
soil infiltration
Horton infiltration equation
Manning roughness coefficient
