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Experiment of Water Runoff and Sediment Yield on the Disturbed Lands in Shenfudongsheng Coalfield Development and Construction
Authors
王文龙
王贞
罗婷
金剑
Publication date
1 January 2011
Publisher
Abstract
采用野外放水冲刷实验的方法,对扰动地面产流产沙规律进行了研究。结果表明:(1)平均产流时间和平均产流量均与坡度不相关,平均产流时间与放水流量呈幂函数关系,平均产流量与放水流量呈二次函数关系。(2)当放水流量为10 L.min-1时,产沙量与坡度呈线性关系,其它放水流量下,产沙量与坡度均呈对数关系;坡度为5°时,产沙量与放水流量呈幂函数关系,坡度为10°和18°时,呈线性关系,产沙量与径流量呈对数函数关系,放水流量是影响产沙量的主要因素。(3)产沙率随放水时间呈减小趋势,大约在前6 min内,产沙率呈增大趋势,达到一个峰值后迅速减小(6~15 min内)
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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 21/09/2018