Infiltration Characteristics and Suitable Models of Grass Felt Layer Slump Body in Alpine Grassland in Source Region of Yellow River

Xu Dezhong; Li Huatan; Zhang Pengfei; Wang Zelei; Liang Shen; Pang Jinghao; Liu Yabin

doi:10.13961/j.cnki.stbctb.2024.05.003

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Infiltration Characteristics and Suitable Models of Grass Felt Layer Slump Body in Alpine Grassland in Source Region of Yellow River

- Infiltration Characteristics and Suitable Models of Grass Felt Layer Slump Body in Alpine Grassland in Source Region of Yellow River
- Bulletin of Soiland Water Conservation Vol. 44, Issue 5, Pages: 19-27(2024)
- 作者机构：
  
  1. 中国地质调查局西宁自然资源综合调查中心,青海,西宁,810000
  2. 青海大学地质工程学院,青海,西宁,810016
  3. 青藏高原北缘新生代资源环境重点实验室,青海,西宁,810016
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.05.003
  CLC： S152.7
- Published：2024
- 稿件说明：
移动端阅览
Xu Dezhong, Li Huatan, Zhang Pengfei, et al. Infiltration Characteristics and Suitable Models of Grass Felt Layer Slump Body in Alpine Grassland in Source Region of Yellow River[J]. Bulletin of Soiland Water Conservation, 2024, 44(5): 19-27.
DOI：

Xu Dezhong, Li Huatan, Zhang Pengfei, et al. Infiltration Characteristics and Suitable Models of Grass Felt Layer Slump Body in Alpine Grassland in Source Region of Yellow River[J]. Bulletin of Soiland Water Conservation, 2024, 44(5): 19-27. DOI： 10.13961/j.cnki.stbctb.2024.05.003.

摘要

[目的

]

明确黄河源区高寒草地草毡层滑塌体入渗过程及特征，为黄河源区高寒草地草毡层滑塌变形破坏防治和水土保持工作提供数据基础和理论依据。[方法

]

以黄河源区高寒草地草毡层滑塌体为研究对象，通过双环入渗试验，获得黄河源鄂陵湖区斜坡草毡层滑塌体入渗速率与时间关系曲线，明确适宜入渗模型。[结果

]

黄河源区高寒草地草毡层滑塌体入渗曲线总体上表现出入渗速率随入渗时间的增加先急剧减小后逐渐趋于平缓的变化趋势；3个试验点的平均渗透系数分别为(5.81±2.18)×10

-3

cm/s，(4.53±0.82)×10

-3

cm/s和(4.42±0.51)×10

-3

cm/s，相互之间不存在显著差异性。相比于Kostiakov模型和通用经验模型，Horton模型对研究区高寒草地草毡层滑塌体水分入渗过程的模拟具有较高的适用性。[结论

]

黄河源区高寒草地草毡层滑塌体水分入渗过程使用Horton模型模拟较为适宜。

Abstract

[Objective] The infiltration process and characteristics of the slump body in the alpine grassland blanket layer in the source region of the Yellow River were analyzed to provide data and theoretical basis for the slump body deformation and damage prevention and soil and water conservation. [Methods] This study used the alpine grass felt layer slump body in the source area of the Yellow River as the research object. The relationship curve between infiltration rate and time and the permeability coefficient of the slope grass felt layer slump body in the Eling Lake area of the Yellow River source were obtained through the double loop permeability test

and the suitable permeability model was determined. [Results] The infiltration rate of the grass felt layer slump body in the study area generally decreased sharply and then gradually flattened with the increase of infiltration time. The average permeability coefficients of the three test points were (5.81±2.18)×10-3

(4.53±0.82)×10-3

and (4.42±0.51)×10-3 cm/s

respectively

and there was no significant difference between each other. Compared to the Kostiakov model and the general empirical model

the Horton model had a higher applicability in simulating the water infiltration process of the grass felt layer slump body in the study area. [Conclusion] The Horton model is more suitable for simulating the water infiltration process of the grass felt layer slump body.

关键词

Keywords

references

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