Improvement of Low Formula for Calculating the Sediment Carrying
Capacity of Overland Flow

doi:10.3969/j.issn.1674-0696.2012.05.28

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (5): 1036-1041.DOI: 10.3969/j.issn.1674-0696.2012.05.28

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Improvement of Low Formula for Calculating the Sediment Carrying Capacity of Overland Flow

Li Wenjie^1,2，Hu Jiang^1,2，Fu Xuhui^1,2

1.National Inland Waterway Regulation Engineering Research Center，Chongqing Jiaotong University，Chongqing 400074，China; 2.Key Laboratory of Ministry of Educotion for Hydraulil and Water Transport Engineering，Chongqing Jiaotong University， Chongqing 400074，China

Received:2011-10-15 Revised:2012-02-28 Online:2012-10-15 Published:2015-01-22

Low 公式计算坡面流挟沙力的改进

李文杰^1,2，胡江^1,2，付旭辉^1,2

1.重庆交通大学国家内河航道整治工程技术研究中心，重庆400074; 2.重庆交通大学省部共建水利水运工程教育部重点实验室，重庆400074

作者简介:李文杰(1984—)，男，河北秦皇岛人，讲师，博士，主要从事泥沙运动力学、流域水沙模拟方面的研究。E-mail:li_wj1984@163.com。
基金资助:
重庆市自然科学基金计划项目( cstc2011jja30002) ; 重庆市科技攻关项目( cstc2011ggA0020) ; 重庆市教委科学技术研究项目( KJ120406)

Abstract

Abstract: Sediment carrying capacity of overland flow decides whether the erosion or deposition happens on the slope，and it is the key point to the development of slope erosion model． The Low equation is applied in a one-D slope erosion model，and is improved by modifying the gradient index based on the measured data of a runoff plot． Results show that，with the increase of gradient index，the simulation error of soil erosion decreases first，and reaches a minimum value，then increases． A gradient index value of 0． 453 is suggested for Low equation when applied in slope erosion model．

Key words: Low equation, sediment carrying capacity of overland flow, one-D slope erosion model, improvement

摘要： 坡面流的挟沙能力决定着坡面土壤是否发生侵蚀或者淤积，其计算是坡面侵蚀产沙模型开发的关键。将Low 公式应用于一维坡面侵蚀产沙模型，基于径流小区实测资料修正坡度项的指数对公式提出改进。结果表明: 随着坡度指数的增加，侵蚀量的模拟误差先减小后增大，存在一个临界值，使模拟误差达到最小; 建议Low 公式应用于坡面侵蚀产沙模型时坡度项的指数取值为0． 453。

关键词: Low 公式, 坡面流挟沙力, 一维坡面侵蚀产沙模型, 改进

CLC Number:

TV142.1

Li Wenjie，，Hu Jiang，，Fu Xuhui，. Improvement of Low Formula for Calculating the Sediment Carrying Capacity of Overland Flow[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(5): 1036-1041.

李文杰，，胡江，，付旭辉，. Low 公式计算坡面流挟沙力的改进[J]. 重庆交通大学学报（自然科学版）, 2012, 31(5): 1036-1041.

References

［1］ Aksoy H，Kavvas M L． A review of hillslope and watershed scaleerosion and sediment transport models［J］． Catena，2005，64: 247-271．
［2］ Julien P Y，Simons D B． Sediment transport capacity of overlandflow［J］． Transactions of the ASAE，1985，28(3): 755-762．
［3］ Guy B T，Dickinson W T，Rudra R P． Evaluation of fluvial sedimenttransport equations for overland flow［J］． Transactions of theASAE，1992，35(2): 545-555．
［4］ Yang C T． Incipient motion and sediment transport［J］． Journal ofthe Hydraulics Division，1973，99(HY10): 1679-1704．
［5］ Bagnold R A． An approach to the sediment transport problem fromgeneral physics［R］． Washington． D． C: U． S． Government GeologicalSurvey，1966．
［6］ Yalin M S． An expression for bed-load transportation［J］． Journalof the Hydraulics Division，1963，89(HY3): 221-250．
［7］ Beasley D B，Huggins L F，Monke E J． Answers: a model for watershedplanning ［J］． Transactions of the ASAE，1980，23(4):938-944．
［8］ Knisel W G． Creams: a field scale model for chemicals，runoff，and erosion from agricultural management systems［R］． WashingtonD． C． : U． S． Department of Agriculture，Conservation Service，1980．
［9］ Moore I D，Burch G J． Sediment transport capacity of sheet and rillflow: application of unit stream power theory［J］． Water ResourcesResearch，1986，22(8): 1350-1360．
［10］ Gilley J E，Woolhiser D A，McWhorter D B． Interrill soil erosion-Part I: Development of model equations［J］． Transactions of theASAE，1985，28(1): 147-153．
［11］ Alonso C V，Neibling W H，Foster G R． Estimating sedimenttransport capacity in watershed modeling［J］． Transactions of theASAE，1981，24(5): 1211-1220．
［12］ Smart G M． Sediment transport formula for steep channels［J］．Journal of Hydraulic Engineering，1984，110(3): 267-276．
［13］ Low H S． Effect of sediment density on bed-load transport［J］．Journal of Hydraulic Engineering，1989，115(1): 124-138．
［14］ Govers G． Evaluation of transport capacity formulae for overlandflow ［M］ / / Parsons A J，Abrahams A D． Dverland Flow． London:UCL Press，1992: 243-274．
［15］仪垂祥，刘开瑜，周涛．植被截留降水量公式的建立［J］．土壤侵蚀与水土保持学报，1996，2(3): 47-49．
Yi Chuixiang，Liu Kaiyu，Zhou Tao． Research on a formula of rainfallinterception by vegetation［J］． Journal of Soil Erosion and Soiland Water Conservation，1996，2(3): 47-49．
［16］ Penman H L． Natural evaporation from open water，bare soil andgrass［M］． London: Proceedings，Royal Society，1948: 120-145．
［17］雷志栋，杨诗秀．土壤水动力学［M］．北京: 清华大学出版社，1988．
［18］ Smith R E，Goodrich D，Quinton J N． Dynamic，distributed simulationof watershed erosion: the Kineros2 and Eurosem models［J］．Journal of Soil and Water Conservation，1995，50: 517-520．
［19］ Yu B． A unified framework for water erosion and deposition equations［J］． Soil Science Society of America Journal，2003，67: 251-257．

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Improvement of Low Formula for Calculating the Sediment Carrying Capacity of Overland Flow

Low 公式计算坡面流挟沙力的改进

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