Experimental study on free infiltration characteristics of muddy water film hole irrigation
HU Jianqiao1,2, WANG Jinghui3, ZHANG Jiangxiang1, CHENG Ziyong4
1. School of Civil Engineering, Longdong University, Qingyang, Gansu 745000, China; 2.Provincial Key Laboratory of Yellow Soil Engineering Properties and Applications, Qingyang, Gansu 745000, China; 3.Northwest Research Institute of Engineering Investigations and Design, Xi′an, Shaanxi 710003, China; 4. The Engineering College of Gansu Agricnltural University, Lanzhou, Gansu 730070, China
Abstract:The influences of sand content on free infiltration characteristics of muddy water film hole irrigation and water content distribution in wetted soil are studied experimentally. Through indoor free infiltration of clean water film hole irrigation experiments with four different sand contents in muddy water, the relationships between free infiltrations of muddy water film hole infiltration parameters, wetting front transport parameters and wetted soil water content distribution parameters after the irrigation and the different sand contents are established. A cumulative infiltration model per unit film area, wetting front transport model, wetted soil water content distribution model and film infiltration declining feature due to the increasing sand content are put forward. It is demonstrated that with increasing muddy water sand content, the cumulative infiltration decreases and less than that of clean water under the same condition. The infiltration coefficient K decreases with increasing sand content, but the infiltration index α increases with the increasing content. In the same infiltration time, with increasing sand content, the vertical and horizontal wetting front transport distances are gradually reduced. With increasing distance from the center of film hole, the water mass content in wetted soil reduces gradually in the vertical and horizontal directions. The sand contents in muddy water can reduce film hole irrigation infiltration in comparison with clean water, particularly, the higher the sand content, the smaller the infiltration rate.
胡建桥,, 王锦辉, 张建香, 成自勇. 浑水膜孔灌自由入渗特性试验研究[J]. 排灌机械工程学报, 2017, 35(1): 80-86.
HU Jianqiao,, WANG Jinghui, ZHANG Jiangxiang, CHENG Ziyong. Experimental study on free infiltration characteristics of muddy water film hole irrigation. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(1): 80-86.
[1]董玉云.膜孔入渗土壤水氮运移特性试验与数值模拟[D].西安:西安理工大学,2007.[2]BENASHER J, CHARACH C, ZEMEL A. Infiltration and water extraction from trickle irrigation source: the effective hemisphere model1[J]. Soil science society of America journal, 1986, 50(4):882-887.[3]CHU S T. Green-ampt analysis of wetting patterns for surface emitters[J]. Journal of irrigation & drainage engineering, 1994, 120(2):414-421.[4]PHILIP J R. General theorem on steady infiltration from surface sources, with application to point and line sources 1[J]. Soil science society of America journal, 1971, 35(6):867.[5]WARRICK A W. Time-dependent linearized infiltration. i. point sources1[J]. Soil science society of America journal, 1974, 38(3):383-386.[6]费良军,李发文,吴军虎.膜孔灌单向交汇入渗湿润体特性影响因素研究[J].水利学报,2003,34(5): 62-68. FEI Liangjun,LI Fawen,WU Junhu. Study on influential factors of wetting soil characteristic under film hole single-line interference infiltration[J]. Journal of hydraulic engineering, 2003,34(5): 62-68.(in Chinese)[7]吴军虎,费良军,王文焰. 膜孔灌溉单孔入渗特性研究[J]. 水科学进展,2001,12(3):307-311. WU Junhu,FEI Liangjun,WANG Wenyan. Study on the infiltration characteristics of single filmed hole and its mathematical model under filmed hole irrigation[J]. Advances in water science, 2001,12(3):307-311.(in Chinese)[8]费良军,程东娟,朱兴华. 单膜孔点源肥液入渗水氮分布特性试验研究[J]. 农业工程学报,2006,22(10):12-15. FEI Liangjun, CHENG Dongjuan, ZHU Xinghua. Water and NO-3-N distribution characteristics in single film hole point source fertile solution infiltration[J]. Transactions of the CSAE,2006, 22(10): 12-15.(in Chinese)[9]费良军,程东娟,雷雁斌,等. 膜孔灌单点源入渗特性与数学模型研究[J]. 西北农林科技大学学报(自然科学版),2007,35(5):212-216. FEI Liangjun, CHENG Dongjuan,LEI Yanbin,et al. Study on the infiltration characteristic and the mathematical model of the point source free infiltration under film hole irrigation[J]. Journal of Northwest A&F University(nature science edition),2007,35(5):212-216.(in Chinese)[10]费良军,王锦辉,金世杰. 不同膜孔直径的浑水膜孔灌自由入渗特性研究[J].农业机械学报,2016,47(2):172-178 FEI Liangjun, WANG Jinhui,JIN Shijie. Free infiltration characteristics of muddy water film hole irrigation with different film hole diameters [J]. Transactions of the CSAM, 2016,47(2):172-178.(in Chinese)[11]吴军虎.膜孔灌溉入渗特性与技术要素试验研究[D].西安:西安理工大学,2000.[12]缴锡云,王文焰,张建丰.单点膜孔入渗特性的试验研究[J].水利学报,1999,30(7): 33-39. JIAO Xiyun, WANG Wenyan, ZHANG Jianfeng. Experimental research on infiltration from single hole of membrane[J]. Journal of hydraulic engineering, 1999,30(7): 33-39.(in Chinese)[13]王文焰,张建丰,王全九,等.黄土浑水入渗能力的试验研究[J].水土保持学报,1994,8(1):59-62. WANG Wenyan, ZHANG Jianfeng,WANG Quanjiu,et al. Experimental studies on infiltration capability of silt-laden water into the loess[J]. Journal of soil and water conservation, 1994,8(1):59-62.(in Chinese)[14]朱兴华.施肥条件下膜孔自由入渗水、氮运移特性试验研究[D].西安:西安理工大学,2006.[15]费良军,王锦辉. 泥沙粒度组成对浑水膜孔灌单向交汇入渗特性的影响[J].农业机械学报,2016,47(4):105-112. FEI Liangjun,WANG Jinhui. Effect of clay and sand grades on singleline interference infiltration characteristics of muddy water film hole irrigation[J]. Transactions of the CSAM, 2016,47(4):105-112.(in Chinese)