泥沙输移比的时空变化模型

泥沙输移比的时空变化模型

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Method-focused categoriesProcess-perspectivePhysical process calculation

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Chinese {{currentDetailLanguage}} Chinese

泥沙输移比的时空变化模型

 

(1)    多年平均泥沙输移比的预报模型:

式中,为流域面积(),为沟道密度();为多年平均径流深()。

(2)    次降雨径流对泥沙输移比综合影响的预报模型:

式中,为雨量分布比;为洪峰增幅比;为径流深度比。

(3)    在次降雨条件下,各级沟道含沙水流的挟沙能力变化模型:

式中,为单位水体产沙增量();为各级沟道输出平均含沙量();为单元沟道小流域输出平均含沙量();

(4)    流域面上的水流切应力()模型:

式中,为影响流域面上泥沙起动的摩擦流速;为水的容重;为水深(径流深,);为能坡(流域坡降,);为水的密度;为重力加速度。

 

参考文献:

:黄土丘陵沟壑区流域系统侵蚀与产沙关系。地理学报,2000,553

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How to Cite

《资源环境数学模型手册》 (2018). 泥沙输移比的时空变化模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/56900ce7-38c0-4d5f-b684-9dfb58eaef5d
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Last modifier : 
zhengzhong
Last modify time : 
2020-12-24
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Contributor(s)

Initial contribute: 2018-12-04

Authorship

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

History

Last modifier : 
zhengzhong
Last modify time : 
2020-12-24
Modify times : 
View History

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