面蚀临界坡度的理论分析模型

面蚀临界坡度的理论分析模型

  48

Contributor

contributed at 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feed back

Classification(s)

Geography SubjectPhysical GeographyPedology
Earth System SubjectEarth Surface SystemLithosphere

Detailed Description

面蚀临界坡度的理论分析模型

(1) 能量分析法:

式中,ab为常数;p为水的密度;q为单宽流量g为重力加速度;k为大于等于84%的床面颗粒的粒径;β为坡面与水平面的夹角。

(2) 泥沙运动力学分析方法:

式中,ϕ为坡面流搬运泥沙总量;f为无因次摩擦系数;为泥沙容重;ρ为水的容重;F为总引力;G为水中的颗粒重量;d为颗粒的直径;φ为水下泥沙颗粒内摩擦角;h为水深;为泥沙搬运的推移质总量;为坡面流搬运的悬移质总量;θ为无因次床面剪切率。

参考文献

雄,靳长兴:坡面土壤侵蚀临界坡度问题的理论与实验研究。地理学报,1999,54(4)

How to cite

《资源环境数学模型手册》 (2018). 面蚀临界坡度的理论分析模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/3fd12d25-7ae5-476b-b926-d971d2c31660
Copy

QR Code

Contributor

contributed at 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feed back

QR Code

You can link related {{typeName}} from your personal space to this model item, or you can create a new {{typeName.toLowerCase()}}.

Model Content & Service

These authorship information will be submitted to the contributor to review.