泥沙颗粒级配组成对浑水波涌灌间歇入渗特性的影响研究  

Influence of Sediment Particle Size Distributionon Intermittent Infiltrationof Waterunder Surge Irrigation

作　　者：魏家兴 费良军[1] 梁爽 介飞龙 WEI Jiaxing;FEI Liangjun*;LIANG Shuang;JIE Feilong(State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,西安710048

出　　处：《灌溉排水学报》2023年第10期57-62,84,共7页Journal of Irrigation and Drainage

基　　金：陕西省水利科技计划项目(2020slkj-11);国家自然科学基金项目(520791105,517792205)。

摘　　要：【目的】利用浑水波涌灌提高浑水灌溉地区水资源利用率,促进农业发展。【方法】在现有浑水波涌灌技术研究基础上,针对我国北方缺水现状及黄河流域河流泥沙量高等特点,通过浑水波涌灌间歇入渗试验,以清水间歇入渗为对照,设置4种不同浑水含沙率(3%、6%、9%、12%)以及4种不同颗粒级配组成(A、B、C、D)的浑水,共计14组试验,研究浑水波涌灌间歇入渗能力、浑水入渗减渗率等指标随入渗时间的变化规律。【结果】浑水波涌灌间歇入渗累积入渗量与入渗所需时间均符合Philip和Kostiakov入渗模型;在Kostiakov模型各拟合结果中,随着周期数的增加,拟合系数K和拟合指数α则均由大变小;在Philip入渗模型中,随着周期数的增加,拟合系数S与拟合系数A均由大变小。【结论】与清水间歇入渗相比较,浑水泥沙的物理黏性颗粒量越大,相应入渗深度呈负相关关系,相同深度下,物理黏性颗粒量越大,土壤含水率越小。【Objective】Water sourced from the Yellow River in China,which has been extensively used for irrigation in the northern irrigation districts of the country,is characterized by high sediment content.This paper aims to investigate the influence of sediment particle size distribution on water infiltrationundersurge irrigation.【Method】The infiltration tests encompassed four treatments with sediment content being3%,6%,9%,and 12%,respectively.Each sediment treatmentincluded four particle gradings labeled as A,B,C,and D,respectively.In each infiltration test,we meticulously measured both the infiltration rate and the variation in infiltration over time.【Result】The relationship between cumulative infiltration and time can be described by the Philip and Kostiakov models,regardless of sediment content and particle grading.As the number of irrigation cycles increased,the parameters K andαin the Kostiakov model,as well as the parameters S and A in the Philip model,all exhibited a declining trend.【Conclusion】In comparison to the infiltration of clean water,the infiltration depth of sediment-water was inversely related to the presence of physically cohesive particles.Conversely,when the infiltration depth was the same,soil water content was negatively correlated to the quantity of physically cohesive particles in the water.

关 键 词：波涌灌 间歇入渗 室内试验 Philip入渗模型 Kostiakov入渗模型 

分 类 号：S274.3[农业科学—农业水土工程]