摘要
闸管灌是一种可实现精确灌溉的田间配水技术,配水口是闸管灌系统的重要设备之一,因此配水口的研究对闸管灌的推广应用具有重要意义。优化设计了两种结构简单、运行可靠的配水口,并对其水力学特性进行了研究。配水口水力学特性试验以配水口开度和配水口前的压力水头为影响因子,通过试验得到了配水口的流量—压力—开度关系,在此基础上,探讨了开度对压力敏感系数的影响。研究表明,优化设计的配水口压力敏感系数较小,且比较稳定,有较好的应用前景。
Gated pipe irrigation is a kind of field water distribution technique with the advantage of precision irrigation.Water distribution gate is one of the important equipment,therefore,research on the gate is of important significance for the application of gated pipe irrigation.Two kinds of distribution gate with simple structure and reliable operation were designed,and the hydraulic characteristics were studied.The experiments were conducted according to the different water distribution gate opening size and the different pressure head before gate.The relations of discharge-pressure-opening size were obtained,and the effect of gate opening size on pressure sensitive coefficient was investigated.The results show that the pressure sensitive coefficient of new designed gate is smaller,and relatively stable.They will be applied widely in the future.
出处
《人民黄河》
CAS
北大核心
2012年第11期97-98,103,共3页
Yellow River
基金
国家"863"计划项目(2002AA2Z4311)
关键词
闸管灌
配水口
水力学特性
敏感系数
优化设计
gated pipe irrigation
water distribution gate
hydraulic characteristics
sensitivity coefficient
optimal design
