【摘要】 在对几种常用的喷灌管道进行了沿程水头损失试验的基础上,提出了一系列管道沿程水头损失的计算公式,分析了这些公式理论上的完备性和实用上的可行性。本文提出的沿程水头损失公式与目前常用的三个国外经验公式相比,其精确程度可以提高20～60％;与我国国家标准《喷灌工程技术规范》(GBJ85-85)相比,部分数据更趋合理;与我国各喷灌测试基地以往多次试验结果基本一致。更多还原

【Abstract】 On the base of experiments of the loss head along pipelines with several kinds of sprinkling irrigation pipelines in common use, a series of formulas of the loss head along pipelines were advanced, and perfectness in theory and feasibility in practice of these formulas were analysed in this paper. The accuracy of these formulas of the loss head along pipelines in this paper will rise 20-60% compared with that of three foreign for mulas in common use at present. Some data will be more reasonable compared with that of ehinese technical standard of sprinkling irrigation engineering, and the result is basically identical compared with that of many tests from various laboratories of sprinkling irrigation of China.更多还原