Characteristics of runoff processes on unmetalled loess roads under experimental rainfall conditions
语种英语
Tian, Fengxia1; He, Xiubin1; Li, Guiyu2; Zheng, Shiqing3
2012
会议录名Erosion and sediment yields in the changing environment (IAHS Publ. 356)
会议录编者/会议主办者IAHS
页码244-250
会议名称IAHS international commission on continental erosion symposium
会议日期October 11, 2012 - October 15, 2012
会议地点Chengdu
会议举办国China
产权排序1
摘要Runoff 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.
关键词unmetalled loess roads kinematic wave theory flow depth flow velocity slope gradient
ISBN号978-1-907161-33-9
ISSN号0144-7815
收录类别EI
EI收藏号Accession number:20133616706430
文献类型会议论文
条目标识符http://ir.imde.ac.cn/handle/131551/24076
专题山地表生过程与生态调控重点实验室
通讯作者Tian, Fengxia
作者单位1.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
第一作者单位中国科学院水利部成都山地灾害与环境研究所
通讯作者单位中国科学院水利部成都山地灾害与环境研究所
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Tian, Fengxia,He, Xiubin,Li, Guiyu,et al. Characteristics of runoff processes on unmetalled loess roads under experimental rainfall conditions[C]//IAHS,2012:244-250.
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