摘要
针对高速公路中央绿化隔离带的灌溉,从管材选择、灌水器选型、控制系统建立等几个方面详细介绍高速公路节水灌溉系统的技术问题.研究表明:高速公路绿化隔离带灌溉系统应采取滴灌方式,系统管材采用PE管为宜;设计灌水时间一般为4 h左右,以此选择相应灌水器的设计流量;系统的单向干管适宜长度为2 km,采取双向供水干管适宜为长度4 km左右,干管经济流速为0.8～1.2 m/s.
From the aspects of pipe selection, irrigation type selection and control system establishment, this paper expounding several technical problems of water-saving irrigation system in the middle isolated grassland of highway. The research results showed that drip irrigation and pipe with the material of PE is the appropriate selection for the irrigation system in the middle isolated grassland of highway. Appropriate design irrigation time is 4 hours and flux of emitter should be designed based on it. Economical length of main pipe is 4 kilometers in both directions, while 2 kilometers in one direction. Appropriate water velocity in main pipe is 0.8~1.2 m/s。
出处
《节水灌溉》
北大核心
2005年第2期18-20,共3页
Water Saving Irrigation
基金
国家高技术研究发展计划("863"计划)"北方半干旱都市绿地灌溉区节水综合技术体系集成与示范"项目。
关键词
高速公路
隔离带
节水灌溉
工程设计
Highway
isolated grassland
water-saving irrigation
engineering design
