| Sediment transport and anti-clogging properties of irrigation system with return pipe |
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| DOI：10.7606/j.issn.1000-7601.2017.02.29 |
| Key Words: sand transport emitter clogging return flow pipe return flow rate irrigation period |
| Author Name | Affiliation | | LU Ze-xing | College of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, China | | LU Jin-suo | 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 | | YU Jian | Inner Mongolia Autonomous institute of water resources research, Hohehot, 010020, China | | SHI Ji-gang | 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 return 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 new-type drip irrigation system with return flow pipe. |
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