A non‐equilibrium sediment transport model for rill erosion

Hydrological Processes - Tập 21 Số 8 - Trang 1074-1084 - 2007
Q. Q. Liu1, L. Chen2, J. C. Li1, Vijay P. Singh3
1Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100080, People's Republic of China
2Desert Research Institute, Las Vegas, NV 89119, USA
3Department of Biological and Agricultural Engineering, Texas A and M University, Scoates Hall, 2117 TAMU, College Station, Texas 77843-2117, Texas, USA

Tóm tắt

AbstractSediment transport in rill flows exhibits the characteristics of non‐equilibrium transport, and the sediment transport rate of rill flow gradually recovers along the flow direction by erosion. By employing the concept of partial equilibrium sediment transport from open channel hydraulics, a dynamic model of rill erosion on hillslopes was developed. In the model, a parameter, called the restoration coefficient of sediment transport capacity, was used to express the recovery process of sediment transport rate, which was analysed by dimensional analysis and determined from laboratory experimental data. The values of soil loss simulated by the model were in agreement with observed values. The model results showed that the length and gradient of the hillslope and rainfall intensity had different influences on rill erosion. Copyright © 2006 John Wiley & Sons, Ltd.

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Tài liệu tham khảo

10.13031/2013.34422

ChenL.2001.Dynamics of overland flow and rill erosion on slopes. Doctoral thesis Institute of Mechanics Chinese Academy of Sciences Beijing China.

Chen L, 2001, Runoff generation characteristics in typical erosion regions on the Loess Plateau, International Journal of Sediment Research, 16, 473

Chen L, 2005, Scouring experimental study on rill erosion on the slopes, Chinese Journal of Hydrodynamics, Series A, 20, 761

10.1061/9780784404003

10.13031/2013.21255

10.1016/0341-8162(89)90007-6

Dou GR, 1999, Incipient motion of coarse and fine sediment, Chinese Journal of Sediment Research, 1

10.13031/2013.28315

10.2166/nh.1976.0019

10.1016/S0098-3004(97)00116-7

Foster GR, 1972, Sedimentation: Symposium to Honor Professor HA, Einstein, 12.1

10.13031/2013.37840

10.13031/2013.32873

10.13031/2013.32874

FosterGR LaneLJ NearingMA.1989.Erosion component. InUSDA–Water Erosion Prediction Project Hillslope Profile Model Documentation. NSERL Report No. 2 US Department of Agriculture Agricultural Research Service National Soil Erosion Research Laboratory West Lafayette IN;10.1–10.12.

GilleyJE FincknerSC NearingMA LaneLJ.1989.Hydraulics of overland flow. In Lane LJ Nearing MA (eds).USDA–Water Erosion Prediction Project: Hillslope Model Documentation NSERL Report No. 2 US Department of Agriculture Agricultural Research Service National Soil Erosion Research Laboratory West Lafayette IN 9.1–9.4.

10.13031/2013.31556

10.1016/0169-555X(88)90006-2

10.1029/91WR02381

10.1130/0016-7606(1945)56[275:EDOSAT]2.0.CO;2

10.2136/sssaj1996.03615995006000030008x

Lei AL, 1998, Dynamics condition of rill erosion on loess hillslope, Chinese Journal of Soil Erosion and Soil and Water Conservation, 4, 39

10.1029/98WR02162

10.1016/S0065-2156(02)39004-5

10.1061/(ASCE)0733-9429(1989)115:1(124)

10.2136/sssaj2001.653861x

10.1016/0016-7061(93)90050-U

10.1029/97WR00013

10.1007/978-3-642-58913-3_22

10.1111/j.1365-2389.1988.tb01199.x

Renard KG, 1997, Agriculture Handbook

RiceCT WilsonBN.1990.Analysis of dynamic variables of rill flow. ASAE paper 902011 ASAE St Joseph MI.

10.2136/sssaj1996.03615995006000030034x

10.2136/sssaj2001.653828x

Wischmeier WH, 1978, US Department of Agriculture (USDA) Handbook

Yalin MS, 1963, An expression for bed‐load transportation, ASCE, Journal of the Hydraulics Division, 89, 221, 10.1061/JYCEAJ.0000874

Yang CT, 1973, Incipient motion and sediment transport, ASCE, Journal of the Hydraulics Division, 99, 1679, 10.1061/JYCEAJ.0003766

Zhang KL, 1999, Hydrodynamic characteristics of rill flow on loess slopes, Chinese Journal of Sediment Research, 56

Zhang KL, 1998, A laboratory study on rill erosion and sediment delivery on the slope, Chinese Journal: Geographical Research, 17, 163

Zheng FL, 1998, Erosion and sediment yield in different zones of Loess slopes, Chinese Journal: Acta Geographica Sinica, 53, 422

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Hydrological Processes

Tập 21 Số 8

1074-1084

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