渗流数值计算方法在农田排水设计中的应用

Application of numerical method of subsurface flow in design of agricultural land drainage

本文通过一个研究实例,比较系统地介绍了渗流数值计算方法在农田排水设计研究中的应用,提出以土壤通气率为排水标准,应用饱和-非饱和有限元法确定暗管(明沟)适宜间距的方法。

The application of numerical method of subsurface flow to the design of agricultural land drainage is described through an example of field study. Based on the new drainage design criteria of root zone aeration, the procedures for the determination of parallel drain spacings by using finite element method of saturated-unsaturated flow are also demonstrated.