论文部分内容阅读
近年来,管道输水灌溉发展很快,对工程优化设计提出新的要求。管径的确定,是管道输水灌溉工程设计的重要环节,它关系到管道灌溉的经济效益。过去采用的“年费用最小法”较繁琐;“经验估算法”的应用范围与合理性往往受到影响。本文提出应用“非线性规划”确定最优管径。这个方法较简便易行,符合实际,应用范围广。
In recent years, the rapid development of pipeline irrigation has put forward new requirements for engineering optimization design. The determination of the pipe diameter is an important part of the design of pipeline water conveyance irrigation and it is related to the economic benefits of pipe irrigation. The “annual fee minimum method” adopted in the past is more complicated; the scope and rationality of the “empirical estimation method” are often affected. This paper proposes to use “nonlinear programming” to determine the optimal pipe diameter. This method is relatively simple, in line with the actual, wide range of applications.