黄土区降雨侵蚀试验研究  

Experimental study on rainfall erosion in Loess area

作　　者：孙雅婷 吴琦 Sun Yating;Wu Qi(Dezhou Hydrology Center,Dezhou〓253000,Shandong;Weifang Hydrology Center,Weifang〓261000,Shandong)

机构地区：[1]德州市水文中心,山东德州253000 [2]潍坊市水文中心,山东潍坊261000

出　　处：《吉林水利》2023年第1期22-25,共4页Jilin Water Resources

摘　　要：为探究不同水质降雨作用下黄土的侵蚀特性,开展了去离子水、天然降雨、天然积水、自来水和微咸水五种不同水质降雨下黄土侵蚀性模型试验研究。结果表明:黄土的产流时间、径流量和产沙量随降雨吸附比和电导率的增大呈先减小后增大的变化特征,天然积水作用下的产流时间、径流量以及产沙量最小;累积入渗量、入渗率和土壤容积含水率随降雨历时进行呈两阶段变化特征,当降雨历时27min后,水质对累积入渗量和入渗率的影响才开始现显现,但差别不大,当降雨历时30min后,土壤容积含水率将保持在一个恒定值;降雨的钠吸附比和电导率对黄土的侵蚀性有重要影响,且存在一个阈值,在该阈值下,降雨对黄土的侵蚀性最强。Reservoir project is an important pillar for the protection of people’s livelihood and the development of agriculture in our country,and its operation,management and mechanism are particularly important.Standardized,orderly and efficient reservoir project management will provide a solid foundation for ensuring the benefits of reservoir projects.This paper combs the basic work and improves the main contents of the related work from several important aspects involved in the operation and management of the reservoir project,such as safety management,personnel training,flood management,inspection,maintenance and maintenance,so as to provide support for the safe operation of the reservoir project.

关 键 词：水质 降雨侵蚀 黄土 钠吸附比 电导率 

分 类 号：S157.1[农业科学—土壤学]