水质对人工复配土壤入渗过程的影响  

Influence of water quality on infiltration process of artificial compound soil

作　　者：张瑞庆 何振嘉 孙增慧 ZHANG Ruiqing;HE Zhenjia;SUN Zenghui(Shaanxi Provincial Land Engineering Construction Group Co.,Ltd.,Xi′an,Shaanxi 710075,China;Institute of Land Enginee-ring and Technology,Shaanxi Provincial Land Engineering Construction Group Co.,Ltd.,Xi′an,Shaanxi 710021,China;Shaanxi Dijian Guantian Investment Construction Co.,Ltd.,Baoji,Shaanxi 721001,China)

机构地区：[1]陕西省土地工程建设集团有限责任公司,陕西西安710075 [2]陕西地建土地工程技术研究院有限责任公司,陕西西安710021 [3]陕西地建关天投资建设有限公司,陕西宝鸡721001

出　　处：《排灌机械工程学报》2023年第11期1171-1178,共8页Journal of Drainage and Irrigation Machinery Engineering

基　　金：陕西省自然科学基础研究计划项目(2023-JC-QN-0360)。

摘　　要：为深入分析水质对人工复配土壤入渗特性的影响,采用室内土柱模拟试验,分析了天然积水和地下水2种不同化学性质的供水情况下,水质对砒砂岩与沙土7种不同体积比下(1∶0,5∶1,2∶1,1∶1,1∶2,1∶5,0∶1)复配后人工复配土壤入渗特征的影响.结果表明:在人工复配土壤质地为粉壤土和砂壤土时(砒砂岩与沙复配比例为1∶0,5∶1,2∶1,1∶1,1∶2),天然积水的入渗时间显著高于地下水的入渗时间;在人工复配土壤质地为壤砂土和砂土时(砒砂岩与沙复配比例为1∶5,0∶1),天然积水和地下水的入渗时间无明显差异;相同水质情况下,不同复配土的入渗时间由长到短按复配比排序为1∶0,5∶1,2∶1,1∶1,1∶2,1∶5,0∶1;同一砒砂岩与沙复配比例下,天然积水处理下的累积入渗量大于地下水处理,且在砒砂岩与沙比例为2∶1处理中,水质间的累积入渗量差异最大,累积入渗量与时间的拟合关系符合对数入渗模型;湿润锋推进距离变化规律与累积入渗量的变化规律一致.结果显示,水质显著影响复配土壤入渗性能,影响的程度与复配土壤质地类型密切相关.In order to deeply analyze the impact of water quality on the infiltration characteristics of artificial compound soil,indoor soil column simulation experiments were conducted to analyze the impact of water quality on the infiltration characteristics of artificially mixed soil under seven different volume ratios(1∶0,5∶1,2∶1,1∶1,1∶2,1∶5,and 0∶1)of a feldspathic sandstone and aeolian sandy soil under two different chemical properties of natural accumulated water and groundwater.The results show that when the artificial composite soil texture is compounded of silty loam,sandy loam,and loamy sand(ratios of sandstone to sandy soil 1∶0,5∶1,2∶1,1∶1,and 1∶2),the infiltration time of the natural water accumulation is significantly longer than the infiltration time of the groundwater.When the artificial composite soil texture is loamy san and sand soil with a ratio of 1∶5 and 0∶1 for the combination of sandstone and sand,there is no significant difference in the infiltration time of the natural water accumulation and the subsurface irrigation water.Using the same water quality,the infiltration time in different ratios of compounded soils decreases from 1∶0,5∶1,2∶1,1∶1,1∶2,1∶5,to 0∶1.Under the same sandstone and sandy soil ratio,the cumulative infiltration amount under natural water accumulation treatment is greater than that using groundwater irrigation water treatment.Moreover,the difference in cumulative infiltration is greatest when the ratio of sandstone to sandy soil is 2∶1.The fitting relationship between the cumulative infiltration amount and elapsed time is consistent with the Logarithmic infiltration model.The variation law of the advancing in wetting front migration distance is consistent with the variation laws of the cumulative infiltration.The results show that water quality significantly affects the infiltration performance of artificial compound soil,and the degree of impact is closely related to the type of artificial compound soil texture.

关 键 词：水质 人工复配土壤 砒砂岩 入渗过程 

分 类 号：S152.7[农业科学—土壤学] S277.9[农业科学—农业基础科学]