| Cite this article: | 李梦刚,孙兆军,焦炳忠,等.不同泥沙浓度及工作压力对微孔地下渗灌管渗水性能的影响[J].灌溉排水学报,0,():-. |
| Li Menggang,SUN Zhaojun,JIAO Bingzhong,et al.不同泥沙浓度及工作压力对微孔地下渗灌管渗水性能的影响[J].灌溉排水学报,0,():-. |
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| Effect of Sediment Concentration and System Working Pressure on Water Seepage Permeability of Microporous Subsurface Infiltration Irrigation Pipe |
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Li Menggang1, SUN Zhaojun2,3,4,5, JIAO Bingzhong2, HAN Lei6,7,8, LI Xingqiang2, LI Qian6,7,8
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1.School of Civil Engineering and Water Conservancy，Ningxia University;2.1.School of Civil Engineering and Water Conservancy，Ningxia University;3.2.Institute of Environmental Engineering Ningxia University;4.3.China－Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Region;5.4.Key Laboratory of Resource Assessment and Environmental Control in Arid Region of Ningxia;6.1.Institute of Environmental Engineering Ningxia University;7.2.China－Arab Joint International Research Laboratory for Featured Resources and Environmental Governance in Arid Region;8.3.Key Laboratory of Resource Assessment and Environmental Control in Arid Region of Ningxia
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| Abstract: |
| 【Objective】Clarify the influence of irrigation water quality and pressure on the water seepage performance of microporous subsurface infiltration irrigation pipe to provide basis for its field application.【Method】In this study, a microporous subsurface infiltration irrigation pipe was tested with tap water and muddy water in the pressure range of 0~100 kPa, and the influence of pressure and sediment concentration on the water seepage performance of microporous subsurface infiltration irrigation pipe was analyzed.【Result】(1) With the increase of sediment concentration in irrigation water, the water seepage rate will continue to decrease with the extension of water flowing time.(2)The flow regime index of the pipeline is greater than 1, the correlation coefficient is greater than 0.98, the seepage rate is sensitive to pressure changes, and with the increase of the sediment concentration of irrigation water, the sensitivity of the seepage rate of the pipeline to pressure increases.(3) The lower pressure, the higher requirements for the quality of irrigation water. However, under high pressure conditions, the adverse effects of sediment in the irrigation water on the seepage performance of the pipeline can be moderately reduced.【Conclusion】Irrigation water sediment concentration is the main factor affecting the seepage performance of pipes. When the irrigation water source contains silt, increasing the pressure of irrigation system is an effective measure to ensure the water seepage performance of microporous subsurface infiltration irrigation pipe. |
| Key words: porous pipe；sediment concentration；the water seepage performance；Emission rate；variation coefficient |
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