不同地形条件下微灌系统的计算机仿真研究

不同地形条件下微灌系统的设计一直是广受关注的问题，该文研究并开发了适应不同地形条件下微灌系统的计算机仿真程序。利用曲面生成方法及实测标高数据获得地貌图形，输入管网位置参数进行管线布置的设计并计算管线各点标高，在此基础上计算机自动完成微灌管网参数和水力平衡计算。为了验证程序的可靠性，对一个已有设计的平坦地块果园滴灌系统进行了模拟和计算，模拟结果与原设计吻合良好。给出了一个复杂地貌条件下微灌管网沿地势变化的仿真设计实例，水力分析表明系统所需水头以及管网节点的压力调节范围均大于对平坦地块的要求。

Research of computer simulation for micro-irrigation system under different terrain conditions

Design of the micro-irrigation system under different terrain conditions is a subject widely concerned. A computer simulation program was developed for simulating the micro-irrigation pipe network system under different terrain conditions. Applying the generation method of curve face and measured data, physiognomy maps were achieved. The layout of pipelines was designed and the height levels of pipelines in different positions were computed. Calculation of parameters of pipe network system and hydraulic balance was accomplished automatically. In order to validate the reliability, an orchard drip irrigation system on flat plot was simulated. Results were consistent with designs. As the pipelines layout along the relief of complicate plot for example, the hydraulic analysis results showed that the needed head pressure of system and the pressure regulation range at all nodes were larger than that in flat plot.