摘要
本文研究了田间管网优化设计中支、毛管允许压力偏差水头分配的问题。在平地上布置微灌系统时,得出了支、毛管的最优分配比不是一个定值,而是随支管上毛管的根数和支、毛管长度的变化而变化,改进了美国J·凯勒和D·喀麦林提出的只给一个固定常数的方法,对节约管网投资有一定的实际意义。
The paper discusses the optimal distribution of permissible derivation of water pressure in the submain and lateral pipes in field network of micro-irrigation system, the optimal distribution proportion of permissible derivation is not a constant, but changes with the change of the number of lateral pipes at the submain pipe and with the lengths of the lateral pipes. This has improved the constant method by American J. Keller and D. Cameron. This method has practical value for saving the investment in network.
出处
《喷灌技术》
北大核心
1990年第2期17-19,64,共3页
关键词
微灌
田间管网
允许压力差
分配比
field network, permissible derivation, distribution proportion, investment in network.
