Morphodynamics of Gully Development on the Platform-Slope System of Spoil Dumps under Platform Concentrated Flow
文献类型：期刊论文
| 作者 | Bai, Yun1,2,6; Guo, Mingming3,6; Kang, Hongliang5; Wang, Wenlong2,5,6; Su, Huan4; Guo, Wenzhao5,6; Ma, Chunyan1 |
| 刊名 | LAND
 |
| 出版日期 | 2021-11-01 |
| 卷号 | 10期号:11页码:19 |
| 关键词 | gully erosion scouring experiment morphology change morphology feedback mining area |
| DOI | 10.3390/land10111270 |
| 通讯作者 | Wang, Wenlong(wlwang@nwsuaf.edu.cn) |
| 英文摘要 | Severe gully erosion on spoil dumps, caused by dense concentrated flow derived from platforms, poses a significant threat to the land management of mining areas. However, little is known about the development processes and mechanisms of gullies on spoil dumps. A flow scouring experiment was conducted on an established platform-slope system under 3.6-5.04 m(3) h(-1). The soils of the system consisted of a surface sandy loam A layer and anunderlying clay loam B layer. The results showed that the platform exhibited a gully development process of headcut-incision-headcut-expansion-stabilization and the steep slope experienced gully development of A-layer incision-A-layer expansion-B-layer incision-stabilization. The results showed 88.97-100% of Froude Number (Fr) decrement and 47.90-88.97% of Darcy-Weisbach roughness coefficient increment finished in the two incision stages on the steep slope. Gully depth has the most sensitive response to flow hydraulics. A significant linear correlation exists between gully depth and shear stress, runoff power, Fr, and Reynolds Number (R-2 > 0.337). Overall, the optimal hydraulic indicator varies within different stages for describing the gully morphology development, illustrating the different action mechanism between flow hydraulics and gully morphology. Our findings provide a theoretical support for future mechanistic studies of gully erosion and the land management on spoil dump. |
| WOS关键词 | EROSION ; RUNOFF ; MODELS ; MORPHOLOGY ; HEIGHT |
| 资助项目 | National Natural Science Foundation of China[41761062] ; National Natural Science Foundation of China[41867015] ; National Key Research and Development Program of China[2016YFC0501604] ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-202102] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000723301200001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/168124]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Wenlong |
| 作者单位 | 1.Yulin Univ, Shaanxi Key Lab Ecol Restorat Shanbei Min Area, Yulin 719000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Mollisols Agroecol, Harbin 150081, Peoples R China 4.Yunnan Inst Water & Hydropower Engn Invest Design, Kunming 650021, Yunnan, Peoples R China 5.Northwest A&F Univ, Inst Water & Soil Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Xianyang 712100, Peoples R China 6.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Xianyang 712100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Yun,Guo, Mingming,Kang, Hongliang,et al. Morphodynamics of Gully Development on the Platform-Slope System of Spoil Dumps under Platform Concentrated Flow[J]. LAND,2021,10(11):19. |
| APA | Bai, Yun.,Guo, Mingming.,Kang, Hongliang.,Wang, Wenlong.,Su, Huan.,...&Ma, Chunyan.(2021).Morphodynamics of Gully Development on the Platform-Slope System of Spoil Dumps under Platform Concentrated Flow.LAND,10(11),19. |
| MLA | Bai, Yun,et al."Morphodynamics of Gully Development on the Platform-Slope System of Spoil Dumps under Platform Concentrated Flow".LAND 10.11(2021):19. |
入库方式： OAI收割
来源：地理科学与资源研究所
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