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工程堆积体坡面产流产沙特性的现场试验
Authors
张翔
杜捷
+3 more
王凯
袁雪红
高照良
Publication date
1 January 2016
Publisher
Abstract
通过不同流量(35,45,55L/min)、不同坡度(24°,28°,32°)的野外放水冲刷试验,对工程堆积体坡面 产流产沙的时空变化特性进行了研究。结果表明,径流强度与放水强度、产沙率密切相关,三者之间呈多 元线性相关;坡面径流强度随冲刷时间呈波动式增大趋势;平均含沙量和产沙比均随坡度增大呈先增后减 的趋势,峰值出现在坡度为28°时;径流强度和产沙率在冲刷时间为10min时出现第一个峰值;坡面产沙过 程呈现产沙率剧增、波动和稳定发展3个阶段;累计产沙量与累计径流量呈线性关系。试验结果可为工程 堆积体坡面水土流失预报模型的构建提供验证数据。</p
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 12/06/2019