摘要
本文对一维间歇灌水入渗规律和二维涌流灌溉进行了室内实验研究,分析探讨了涌流灌溉机理,提出了以考斯加柯夫方程为基础的描述间歇灌水入渗规律的入渗方程,并利用有限差分法对一维间歇灌水入渗的土壤水分运移进行了数值模拟计算,其结果与实测值基本相同。实验资料表明,涌流灌溉比连续流灌溉的水流推进速度快,灌水均匀度和灌水效率高,文中还对涌流灌溉技术参数的确定进行了初步分析。
According to the interior experiment diata of one dmension intermittent infiltration and two dimension surge irrigation, the mechanism of surge irrigation and the method determining technical parameters of surge irrigation were discussed, the equation describing one dimension intermittent infiltration and the finite-difference model depicting movement of one dimension unsaturated soil water were presented, the resuet calculated with this medol and that in experiment was essential equal. Experiment data also show that surge irrigation have many advantages, such as fast advance, high uniformity and high irrigation efficiency, than continuous irrigation.
出处
《西北水资源与水工程》
1990年第1期14-27,共14页
Northwest Water Resources & Water Engineering
