固定式喷灌系统经济管径的计算方法

张庆华; 杨培岭; 李鹏

引用本文:	张庆华,杨培岭,李鹏.固定式喷灌系统经济管径的计算方法[J].水利水运工程学报,2005,(4):19-23

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固定式喷灌系统经济管径的计算方法
张庆华¹,杨培岭²,李鹏¹
1. 山东农业大学,水利土木工程学院,山东,泰安,271018 2. 中国农业大学,水利与土木工程学院,北京,100083

摘要:

在分析了固定式喷灌系统的管网投资、年运行费用与管径函数关系的基础上，利用工程经济分析中费用最小化准则和非线性规划理论，建立了求解喷灌系统管网经济管径的数学模型，并给出了无约束条件直接求解经济管径的计算式．

关键词: 经济管径费用函数费用最小化准则固定式喷灌系统

DOI：

分类号:S275.5

基金项目:

Calculation method of economical tube diameter of fixed spray irrigation systems

ZHANG Qing-hua¹,YANG Pei-ling²,LI Peng¹

1. College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Taian 271018, China; 2. College of Water Conservancy and Civil Engineering, China Agricultural University, Beifing 100083, China

Abstract:

Based on the analyses of the investment of nozzle tube net and relationship between the annual operation cost and tube diameter function of a fixed spray irrigation system, a mathematic model to calculate the economical tube diameter of a spray irrigation system is developed by using the minimum expense norm and nonlinear planning theory in engineering economic analysis, and a direct calculation formula for the economical tube diameter in unrestrained conditions is presented.

Key words: economical tube diameter expense function minimum expense norm fixed spray irrigation system