ICS 93. 160P 57谓黔中 华 人 民 共 和 国 国 家 标 准GB/ T 20203- 2006农田低压管道输水灌溉工程技术规范Technical specification for irrigation projects with low pressure pipe conveyance2006-02-24 发布2006-07- 0 1 实施中华人民共和国国家质量监督检验检疫总局中 国 国 家 标 准 化 管 理 委 员 会发 布GB/ T 20203-2006目次前 言···· ·· ··· ··· ··· ··· ··· ·· ···· · ···· ··· ·· ··· ·· ···· ··· ··· ··· ··· ··· ··· ··· ··· ··· ··· ··· ··· ，· ··· ··· ·· ··· ···· · ···· ··· ··· ·· ⋯ ⋯ m1范围 ···············································································································⋯⋯ 12规范性引用文件 ·······································，························································⋯⋯ 13术语和定义 ··································· ····························· ························，···········⋯⋯ 14工程规划 ····································································，········ ························⋯⋯24. 1规划原则 ··········································，··································⋯⋯，.⋯ ⋯ 24. 2主要技术参数 ···················· ·························· ··································⋯⋯ 34. 3水量供需平衡分析 ········································································，，················⋯⋯ 34.4 管道系统布置与畦沟灌水要素 · 34. 5规划成果 ································ ······· ·····························································⋯⋯ 45工程设计 ·········································································································⋯⋯ 55. 1设计流量 ······················· ··············································································⋯⋯ 55. 2设计水头 ·············································· ·················，·································，···⋯⋯ 55. 3水 头损 失· ·· ··· ··· ·· ··· ·· ··· ·· ··· ···· · ···· ··· ·· .
