水土保持学报2013，Vol.27Issue(3)：9-13,5.
紫色丘陵区不同弃土弃渣下垫面产流产沙试验研究
Experimental Study on Water Runoff and Sediment Yield of Different Underlying Surfaces of Waste Soil and Residue in Purple Hilly Area
摘要
Abstract
Field scouring experiment was studied to explore the dynamic process of runoff and sediment generation on the underlying surfaces of waste soil and residue in purple hilly area.The results showed that:(1)Both water runoff and sediment yield were increased with increasing the flow discharge.Water runoff increased firstly and then changed stably when flow were 5,10,15,20,25 L/min,however,sediment yield increased firstly,and then decreased with the lapse of time.There was fluctuation phenomenon in both runoff and sediment yield process,and the fluctuation of sediment was stronger than runoff,presented the characteristic of multi-peak multi-valleys.(2)Soil-stone ratios' effect on water runoff and sediment yield was increased with increase of flow discharge； both water runoff and sediment yield were increased with increasing slope gradient under the same condition.The increasing amount of the average water runoff and sediment yield rate of the underlying surface with soil reached the maximum when flow was from 5 L/min to 25 L/min,however,the soil-stone mixed was the least.(3)It could be seen from the fitting linear equations of runoff and flow discharge,the growth rate of runoff and sediment yield of the 25° underlying surface with soil reached the maximum(51.883,18.770) respectively,however,both of the 35° underlying surface with soil-stone mixed were 7.270,2.325 respectively,which were the least.关键词
产流/产沙/弃土弃渣/放水冲刷试验/紫色丘陵区Key words
runoff/ sediment/ waste soil and residue/ scouring experiment/ purple hilly area分类
农业科技引用本文复制引用
彭旭东,江东,史东梅,汪三树,刘益军,李叶鑫..紫色丘陵区不同弃土弃渣下垫面产流产沙试验研究[J].水土保持学报,2013,27(3):9-13,5.基金项目
重庆市水利局科技项目(生产建设项目)"弃土弃渣水土流失规律研究"(2011) （生产建设项目）
重庆市水利局科技项目(重庆市生产建设项目)"水土流失危害研究"(2012) （重庆市生产建设项目）
