摘要
为蓄水灌溉田间应用提供理论依据,试验对不同管网的水力性能进行了试验研究。结果表明:随着供水管径的减小,各出水口的流量偏差率在逐渐增大,但对于同一管径的供水毛管,流量偏差率均随着供水压力的增大而逐渐减小。在相同供水时间内,蓄水袋的容量随着供水管口径、供水压力的增大而增大,并基本呈线性变化关系。蓄水袋的最大实际蓄水量与系统的供水压力有关,与供水管口径的关系不明显,提出当蓄水袋的供水管口径为Φ5 mm时较合适。
The hydraulic characteristic of different pipe networks is studied in this paper to supply the theory basis for storage irrigation application in field.The results of experiment show that the flow percentage of deviation increases slowly with the decrease of the tube diameter,while it decreases slowly with the increase of the water supplying pressure under the same tube diameter.Under the same water supplying time,the volume of storage sack increases with the increasing of tube diameter and water supplying pressure,and it changes as linear relationship.The maximum practical water retention capacity of storage sack is mainly linked to water supplying pressure while not water tube diameter.In the end,it is proposed that the appropriate water tube diameter of storage sack is Φ5.
出处
《节水灌溉》
北大核心
2011年第1期32-36,共5页
Water Saving Irrigation
基金
国家科技支撑计划项目(2007BAD38B06)
国家"十一五"国家高技术研究发展计划("863"计划)项目(2006AA100213)
关键词
蓄水灌溉
管网
水力性能
water storage irrigation
pipe network
hydraulic characteristics
