ZHAO Xiao-guang,WU Fa-qi,WANG Jian.Study on the Critical Value of the Thin Runoff and Law of Action by the Major Factors[J].Research of Soil and Water Conservation,2000,7(01):30-32.
坡面薄层径流最小侵蚀临界值及主要影响因子研究
- Title:
- Study on the Critical Value of the Thin Runoff and Law of Action by the Major Factors
- Keywords:
- thin runoff flow; erosion; Reynolds value
- 分类号:
- S157.1
- 摘要:
- 通过8组坡度、5种水深及5种糙率情况下坡面薄层径流流态变化特征的实验研究，得出薄层径流的临界雷诺数为1000，对应的径流属层流时，水深上限为3 mm，通过水深、糙率及坡度对雷诺数作用特征分析可知，雷诺数与水深、坡度的变化成正比，与糙率的变化成反比；水深的作用明显大于后两者，影响因子共同作用下，雷诺数的变化规律可用公式Re=2.331 H1.41n-0.973S0.486-288.17来描述。
- Abstract:
- Changes of the thin runoff flow in slopes depths and coarse degrees were discussed.The results showed that the critical value of Reynolds under 5° slope degree and 3 mm water depth when runoff flow was stratified.The value of Reynolds was directly proportional to water depths and slope degrees,but indireetly proportional to coarse degree.Effect of water degree on it largely exceeded others. A calculation formula of Reynolds value is as follows:Re=2.331 H1.41n-0.973S0.486-288.17.
参考文献/References:
[1] 成都科学技术大学水力学教研室.水力学[M].北京:人民教育出版社,1979
[2] 吴普特,周佩华.薄层水流流动型态及侵蚀搬运方式的研究[J].水土保持学报,1992,6(1):20～24
[3] 刘秉正,吴发启主编.土壤侵蚀[M].西安:陕西人民出版社,1997
[4] 吴发启,赵晓光,刘秉正等.地表糙度的量测方法及对坡面径流和侵蚀的影响[J].西北林学院学报,1998,13(2):15～19
相似文献/References:
[1]张霞,贾莲莲,李占斌,等.模拟降雨条件下地表糙度动态变化特征研究[J].水土保持研究,2012,19(04):16.
ZHANG Xia,JIA Lian-lian,LI Zhan-bin,et al.Study on Dynamical Variation Characteristics of Surface Roughness under Field Simulated Rainfall Condition[J].Research of Soil and Water Conservation,2012,19(01):16.
[2]李有利,傅建利,杨景春,等.黄河水量明显减少对下游河流地貌的影响[J].水土保持研究,2001,8(02):7.
LI You-li,FU Jian-li,YANG Jing-chun,et al.Geomorphological Effect of Discharge Reduction on the Lower Reaches of the Yellow River[J].Research of Soil and Water Conservation,2001,8(01):7.
[3]赵国际.内蒙古砒砂岩地区水土流失规律研究[J].水土保持研究,2001,8(04):158.
ZHAO Guo-ji.Research on the Laws of Soil and Water Loss in Sand Rock Region, Inner Mongolia[J].Research of Soil and Water Conservation,2001,8(01):158.
[4]谢锦升,杨玉盛,解明曙.亚热带花岗岩侵蚀红壤的生态退化与恢复技术[J].水土保持研究,2004,11(03):154.
XIE Jin-sheng,YANG Yu-sheng,XIE Ming-shu.Ecological Restoration Technology and Degradation of Eroded Granite Red Soil in Subtropical Regions in China[J].Research of Soil and Water Conservation,2004,11(01):154.
[5]廖超林,石宇,王翠红,等.湘中紫色丘陵区侵蚀性土体养分特征研究[J].水土保持研究,2009,16(03):110.
LIAO Chao-lin,SHI Yu,WANG Cui-hong,et al.Study on Nutrient Characteristics of Erosive Soil in Purple Hilly Area of Central Hu’nan Province[J].Research of Soil and Water Conservation,2009,16(01):110.
[6]吕学军,倪化勇,徐如阁,等.四川峨边县蒋沟矿渣侵蚀泥石流成因与特征[J].水土保持研究,2011,18(03):83.
LÜ,Xue-jun,NI Hua-yong,et al.Formation and Characteristics of Mine-slag Debris Flows from Jianggou Ravine in Ebian County, Sichuan Province[J].Research of Soil and Water Conservation,2011,18(01):83.
[7]陈安强,马文贵,高福军,等.土石山区径流小区坡长对径流量和侵蚀量影响的研究[J].水土保持研究,2007,14(04):190.
CHEN An-qiang,MA Wen-gui,GAO Fu-jun,et al.Effects of Slope Length on Runoff and Soil Erosion in Rocky Mountain Runoff Plots[J].Research of Soil and Water Conservation,2007,14(01):190.
[8]程复,梁伟,赵廷宁,等.黄土丘陵沟壑区降水侵蚀影响研究——以陕西吴旗县柴沟流域为例[J].水土保持研究,2007,14(05):118.
CHEN Fu,LIANG Wei,ZHAO Ting-ning,et al.Study on Rainfall and Erosion in Hilly and Gully Regions on the Loess Plateau——A Case Study in Chaigou Watershed in Wuqi County, ShaanXi Province[J].Research of Soil and Water Conservation,2007,14(01):118.
[9]傅建利,李有利.三门峡水库对黄河河流地貌的影响[J].水土保持研究,2001,8(02):59.
FU Jian-li,LI You-li.Geomorphological Effect of the Sanmenxia Reservoir on the Yellow River[J].Research of Soil and Water Conservation,2001,8(01):59.
[10]朱远达,张光远,蔡强国,等.侵蚀影响下土壤碳和养分空间变化及其过程模拟[J].水土保持研究,2001,8(04):126.
ZHU Yuan-da,ZHANG Guang-yuan,CAI Qiang-guo,et al.Soil Carbon and Nutrient Change and Model Under Soil Erosion[J].Research of Soil and Water Conservation,2001,8(01):126.
备注/Memo
收稿日期:2000-1-1
基金项目:国家“九五”重点科技攻关计划项目，编号为96-004-05-07