根据畦田水流推进过程同步推求入渗参数和田面糙率  

Synchronous Estimation of Infiltration Parameters and Manning Roughness According to the Process of Border Irrigation Water Advance

作　　者：王耀飞 缴锡云[1,2] 王志涛[1,2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,南京210098 [2]河海大学水利水电学院,南京210098

出　　处：《中国农村水利水电》2013年第12期77-79,84,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(50979025);国家科技支撑计划课题(2011BAD25B02)

摘　　要：入渗参数和田面糙率是进行沟畦灌溉模拟计算的基础参数,并已有多种计算方法。与以往研究方法不同,本文选择参数拟合的方法求解参数。以水量平衡原理和曼宁公式为基础,通过分析畦田灌溉水流推进过程,建立了推求Kostiakov入渗公式的参数和田面糙率的方法。同时,利用Maheshwari法计算结果与之比较,验证入渗参数取值合理。再利用零惯量模型预测水流推进过程,与实测数据基本一致,因此田面糙率取值亦合理。Infiltration parameters and surface roughness are basic parameters to simulate the calculation of border irrigation and furrow irrigation, and there are many existing calculation methods. Unlike traditional methods, this paper chose the parameter fitting meth- od to work out parameters. Based on the water balance principle and manning formula, a method was established to achieve Kostiak- ov infiltration parameters and surface roughness by analyzing the process of border irrigation water advance. At the same time, the estimating infiltration parameters had been verified to be reasonable by comparing the result with the Maheshwari method, then the Zero inertia model was used to predict the process of irrigation water advance. The result showed consistency with the test data, so the values of surface roughness were also reasonable.

关 键 词：地面溉灌 水流推进过程 入渗参数 田面糙率 

分 类 号：S275.3[农业科学—农业水土工程]