Effects of initial step height on the headcut erosion of bank gullies: a case study using a 3D photo-reconstruction method in the dry-hot valley region of southwest China
Effects of initial step height on the headcut erosion of bank gullies: a case study using a 3D photo-reconstruction method in the dry-hot valley region of southwest China
复制标题
初始台阶高度对岸沟切头侵蚀的影响——以西南干热河谷地区3D照片重建法为例
DOI：
10.1080/02723646.2016.1219939
复制
发表时间：
2016-08
影响因子：
1.6
通讯作者：
Shi Liangtao
中科院分区：
文献类型：
--
作者：
Zhang Baojun;Xiong Donghong;Su Zhengan;Yang Dan;Dong Yifan;Xiao Liang;Zhang Su;Shi Liangtao
摘要 溯源侵蚀已被认为是中国西南干热河谷地区沟壑发育的主要过程之一。为了研究初始台阶高度对溯源侵蚀过程的影响，构建了三个溯源侵蚀沟头……（原句最后一个单词“constru”不完整，可能是“constructed”）
Abstract Headcut erosion has been recognized as one of the main processes involved in gully development in the dry-hot valley region of southwest China. To examine the effect of initial step height on headcut erosion processes, three headcuts were constructed ranging in height from 0.75 to 1.25 m on an active bank gully head, and a series of scouring experiments were conducted under a flow discharge of 120 L min−1. The morphological evolutions of the plunge pools and soil loss volume were estimated by three-dimensional photo-reconstruction methods (3D-PR). As the step height increased, the experimental results showed that: (1) the transformed potential energy and shear stress would increase by approximately 4.89 J s−1 and 26.4 Pa on average when the step height increased 0.25 m; (2) the mean depth and width of the plunge pool exhibited obvious growth, and the morphology of the cross-section developed from approximately V-shaped to U-shaped; and (3) soil loss volume increased logarithmically, with total soil loss volumes of 0.076, 0.105 and 0.116 m3, respectively. Although the significant effects of the initial step height on headcut erosion were verified, further quantitative studies are required to quantify the mechanism of headcut erosion, especially for plunge pool erosion.
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DOI：
--
发表时间：
2014
期刊：
--
影响因子：
--
作者：
L. Jiaji
通讯作者：
L. Jiaji
影响因子：
6.2
作者：
L. Allan James;Darrell Glen Watson;William F. Hansen
通讯作者：
L. Allan James;Darrell Glen Watson;William F. Hansen
影响因子：
6.2
作者：
D. O. Wijdenes;J. Poesen;L. Vandekerckhove;M. Ghesquiére
通讯作者：
D. O. Wijdenes;J. Poesen;L. Vandekerckhove;M. Ghesquiére
影响因子：
5.4
作者：
C. Alonso;S. Bennett;O. Stein
通讯作者：
C. Alonso;S. Bennett;O. Stein
影响因子：
6.2
作者：
Poesen, J;Nachtergaele, J;Valentin, C
通讯作者：
Valentin, C