Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，
Ministry of Education，Northwest A ＆ F University，Yangling 712100，Shanxi Province，China
Influence of sediment concentration and inlet pressure on clogging of labyrinth channel emitter XU Lu-quan, LI Yuan-nong, FANG Yun-jie, YIN Min-hua, HUANG Peng, WANG Kai-yu, WANG Xing-yao (Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education，Northwest A ＆ F University，Yangling 712100，ShanXi Province，China ) Abstract: In order to find out the reasons and rules of the clogging of the head of the labyrinth block of the inlaid labyrinth, the method of full combination test was used to investigate the reasons of the sediment concentration and the inlet pressure. Sorting out the sediment particle size less than 0.10mm, prepared 3 kinds of sediment concentration of muddy water, respectively in 0.025MPa and 0.075MPa under the pressure of the periodic intermittent irrigation experiment flow changes by laser particle size analyzer analysis of blocking sand, combined with Christiansen uniformity coefficient and dripper flow analysis of relative emitter clogging. The results show that the distribution of plugging parts is more concentrated, and the blockage is more than the end of the pipe. 0.075MPa, 0.025MPa, the distribution of the plugging parts is dispersed, and evenly distributed on the drip irrigation pipe. The same sediment concentration, 0.075MPa pressure is 0.025MPa caused by dripper clogging; dripper clogging degree is not completely with the sediment concentration increased, part of a small concentration of muddy water blocking in rapid development of large concentration of muddy water, under pressure, is easy to cause sensitive dripper clogging concentration range. Key words: plugging position; inlet pressure; sediment concentration; irrigation uniformity coefficient; relative flow
XU Lu-quan, LI Yuan-nong, FANG Yun-jie, YIN Min-hua, HUANG Peng, WANG Kai-yu, WANG Xing-yao.
Influence of Sediment Concentration and Inlet Pressure
on Clogging of Labyrinth Channel Emitter [J].Water Saving Irrigation, 2018(2): 34-39
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