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Characteristics of runoff processes on unmetalled loess roads under experimental rainfall conditions
Tian, Fengxia1; He, Xiubin1; Li, Guiyu2; Zheng, Shiqing3
Source PublicationErosion and sediment yields in the changing environment (IAHS Publ. 356)
Author of SourceIAHS
meetingIAHS international commission on continental erosion symposium
Conference DateOctober 11, 2012 - October 15, 2012
Conference PlaceChengdu
Contribution Rank1
AbstractRunoff commonly triggers severe erosion on unmetalled road surfaces and roadside slopes. In this context, this paper explores the use of theoretical analysis of runoff processes for an unmetalled loess road, based on the kinematic wave theory, and explores the key controlling factors. The results of the theoretical analysis are assessed using measured data from simulated rainfall tests on artificial experimental road sections. The results suggested that: (1) the kinematic wave equation is appropriate for describing dynamic processes of overland flow on unmetalled loess roads; (2) the discharge, depth and velocity of runoff on the unmetalled loess roads increased with increasing rainfall intensity, whereas the velocity of runoff increased with increasing slope length; (3) the velocity of runoff increased as flow depth decreased with increasing slope gradient; and (4) unit width discharge on road sections with different slopes under the same rainfall intensity (120 mm h) remained similar. Copyright © 2012 IAHS Press.
Keywordunmetalled loess roads kinematic wave theory flow depth flow velocity slope gradient
Indexed ByEI
Accession numberAccession number:20133616706430
Document Type会议论文
Corresponding AuthorTian, Fengxia
Affiliation1.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China;
2.China Water Resources Pearl River Planning, Surveying and Designing Co. Ltd., Guangzhou 510610, China;
3.Institute of Soil and Water Conservation, CAS and MWR, Yangling, Shaanxi 712100, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Tian, Fengxia,He, Xiubin,Li, Guiyu,et al. Characteristics of runoff processes on unmetalled loess roads under experimental rainfall conditions[C]//IAHS,2021:244-250.
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