| 回流滴灌系统泥沙输移及抗堵塞性能研究 |
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| 引用本文： | 路泽星,卢金锁,于健,史吉刚.回流滴灌系统泥沙输移及抗堵塞性能研究[J].干旱地区农业研究,2017,35(2):182-186. |
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| 作者姓名： | 路泽星 卢金锁 于健 史吉刚 |
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| 作者单位： | 1. 西安建筑科技大学环境与市政工程学院,陕西西安,710055;2. 西安建筑科技大学环境与市政工程学院,陕西西安710055;西北水资源与环境生态教育部重点实验室,陕西西安710055;3. 内蒙古自治区水利科学研究院,内蒙古呼和浩特,010020 |
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| 基金项目： | 内蒙古自治区重大水利科技专项 |
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| 摘 要： | 为探究在传统支状滴灌系统末端设置回流管后滴灌系统毛管主流流速增加后回流滴灌系统的输沙排沙潜力及其抗堵塞性能,通过周期滴灌实验分析回流滴灌系统的灌水均匀系数以及滴头堵塞情况,并对毛管内沉积泥沙分布特点和系统各部分输沙排沙所占比重进行分析。实验结果表明:0.035 m·s~(-1)回流、0.05 m·s~(-1)回流滴灌系统的灌水均匀系数、滴头堵塞数量均明显优于支状滴灌系统。回流流速为0.05、0.035、0.015 m·s~(-1)三种回流系统中毛管沉泥量依次增加,但均低于支状滴灌系统的毛管泥沙沉积数量,同时四种回流滴灌系统均表现为沿水流方向毛管内沉泥量逐渐增加。支状滴灌系统、0.015 m·s~(-1)回流、0.035 m·s~(-1)回流、0.05 m·s~(-1)回流系统回流排沙量分别为0、1.59、4.30、7.52 kg,表明回流管具有良好的输沙排沙能力。
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| 关 键 词： | 泥沙输移 滴头堵塞 回流管 回流流速 灌水周期 |
Sediment transport and anti-clogging properties of irrigation system with return pipe |
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| LU Ze-xing,LU Jin-suo,YU Jian,SHI Ji-gang.Sediment transport and anti-clogging properties of irrigation system with return pipe[J].Agricultural Research in the Arid Areas,2017,35(2):182-186. |
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| Authors: | LU Ze-xing LU Jin-suo YU Jian SHI Ji-gang |
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| Institution: | College of Environmental and Municipal Engineering, Xi''an University of Architecture and Technology, Xi''an, Shaanxi 710055, China,College of Environmental and Municipal Engineering, Xi''an University of Architecture and Technology, Xi''an, Shaanxi 710055, China; Key Laboratory of NothWest Water Resource and Environment Ecology Ministry of Education, Xi''an, Shaanxi 710055, China,Inner Mongolia Autonomous institute of water resources research, Hohehot, 010020, China and Inner Mongolia Autonomous institute of water resources research, Hohehot, 010020, China |
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| Abstract: | In order to explore the transport potentials of sediment and anti-clogging properties in a new-type drip irrigation system,which was altered from traditional irrigation system by adding a return flow pipe,a periodic intermittent drip irrigation experiment was carried out using muddy water to investigate the properties of anti-clogging and uniform coefficient,and to analyze the distribution of sediment in lateral pipes and the sediment discharge in different parts of the drip irrigation system.The results showed that,when the return flow rate was 0.035 m· s-1 and 0.050 m· s-1,the uniform coefficient and the amount of clogged emitter in the new-type drip irrigation system were better than those in the branch drip irrigation system.The sediment quantity deposited in lateral pipes with return flow rate of 0.050 m· s-1,0.035 m·s-1 and 0.015 m· s-1 in the drip irrigation system increased in turn but was wholly lower than that in the branch drip irrigation system.The sediment quantity deposited in lateral pipes in all the 4 kinds of irrigation system increased gradually along with the flow direction.The total amount of sediment discharged from the branch drip irrigation system,0.015 m·s-1 retum flow system,0.035 m·s-1 return flow system and 0.050 m·s-1 return flow system was 0,1.59,4.30 kg and 7.52 kg,respectively,showing the good capacity of transporting and flushing sediment in the newtype drip irrigation system with return flow pipe. |
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| Keywords: | sand transport emitter clogging return flow pipe return flow rate irrigation period |
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