| Characteristics of runoff processes on unmetalled loess roads under experimental rainfall conditions | |
| Language | 英语 |
Tian, Fengxia1 ; He, Xiubin1; Li, Guiyu2; Zheng, Shiqing3
| |
| 2012 | |
| Source Publication | Erosion and sediment yields in the changing environment (IAHS Publ. 356) |
| Author of Source | IAHS |
| Pages | 244-250 |
| meeting | IAHS international commission on continental erosion symposium |
| Conference Date | October 11, 2012 - October 15, 2012 |
| Conference Place | Chengdu |
| Country | China |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | unmetalled loess roads kinematic wave theory flow depth flow velocity slope gradient |
| ISBN | 978-1-907161-33-9 |
| ISSN | 0144-7815 |
| Indexed By | EI |
| Accession number | Accession number:20133616706430 |
| Document Type | 会议论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/24076 |
| Collection | 山地表生过程与生态调控重点实验室 |
| Corresponding Author | Tian, Fengxia |
| Affiliation | 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 |
| 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,2012:244-250. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 244-.pdf（4025KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
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