不同因素对内镶贴片式滴灌带抗堵塞性能指标的试验研究  

The Effect of Different Factors on Clogging of inlay Patch Drip Irrigation Belt

作　　者：陶洪飞[1,2] 陶娟琴 周良 李巧 马合木江·艾合买提[1,2] 姜有为 杨文新[1,2] 魏建群 TAO Hongfei;TAO Juanqin;ZHOU Liang;LI Qiao;MAHEMUJIANG·Ahmati;JIANG Youwei;YANG Wenxin;WEI Jianqun(College of Water Conservancy and Civil Engineering,Urumqi 830052,China;Xinjiang Key Laboratory of Water Conservancy Engineering Safety and Water Disaster Prevention,Urumqi 830052,China;Construction Xinjiang Construction Engineering,Chengdu 610000,China)

机构地区：[1]新疆农业大学水利与土木工程学院,乌鲁木齐830052 [2]新疆水利工程安全与水灾害防治重点实验室,乌鲁木齐830052 [3]中建新疆建工,成都610000

出　　处：《灌溉排水学报》2022年第12期44-51,58,共9页Journal of Irrigation and Drainage

基　　金：新疆维吾尔自治区重大科技专项项目(2022A02003);2019年度新疆维吾尔自治区人民政府公派出国留学成组配套项目“干旱区微灌节水增效技术研究”;新疆维吾尔自治区创新环境(人才、基地)建设专项-“天山青年计划”项目(2019Q075)。

摘　　要：【目的】探究内镶贴片式滴灌带灌水均匀度和流量降幅与滴灌带铺设坡度、灌水水源含沙量、进水口运行压力的关系,提高灌水均匀度和降低流量降幅,减少滴灌带堵塞。【方法】设计铺设坡度(-1%、0、1%)、含沙量(1、2、3 g/L)及运行压力(40、70、100 kPa)三因素三水平的均匀正交试验方案,开展滴灌带长度为35 m的室内物理试验。【结果】灌水均匀度的影响因素大小为:含沙量>铺设坡度>运行压力;流量降幅的影响因素大小为:含沙量>运行压力>铺设坡度;构建了含沙量、铺设坡度及运行压力与灌水均匀度和流量降幅的投影寻踪回归模型,2个模型的标准化均方根误差为2.98%和2.42%,预测模型表现效果极好。【结论】含沙量是影响内镶贴片式滴灌带堵塞的重要因素,以及构建了不同含沙量、铺设坡度、运行压力与灌水均匀度和流量降幅的关系。研究成果可对一定范围内不同含沙量、铺设坡度、运行压力下内镶贴片式滴灌带的灌水均匀度和流量降幅进行预测,在滴灌系统设计和运行理论体系中起到一定的参考作用。【Objective】Emitter cologging is a common issue in drip irrigation.This paper studies the effects of laying slope,sediment content and operating pressure on irrigation uniformity and flow drop of the inlaid patch drip irrigation in attempts to reduce clogging of the drip irrigation belt.【Method】The experiment was design using a uniform orthogonal test plan with three factors and three levels:laying slope(-1,0,1%),sediment content(1,2,3 g/L)and operating pressure(40,70,100 kPa).The experiment was conducted in a laboratory using 30 m drip irrigation belts【.Result】The factors that influence irrigation uniformity are ranked in the order of sediment content>laying slope>operating pressure.The factors that impact flow drop are ranked in the order of sand content>operating pressure>laying slope.Regression models for estimating irrigation uniformity and flow drop using the sediment content and operating pressure were accurate,with its standardized root mean square errors being 2.98%and 2.42%.【Conclusion】Sediment content is an important factor affecting the clogging of the inlaid patch drip irrigation belt.The models we presented to link sediment content,laying slope and operating pressure to irrigation uniformity and flow rate drop were accurate and can be used for design.

关 键 词：内镶贴片式滴灌带 灌水均匀度 流量降幅 预测模型 

分 类 号：S275.6[农业科学—农业水土工程]