水土流失治理与水土保持效益模型

水土流失治理与水土保持效益模型

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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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Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesHuman-perspectiveEconomic activities

Model Description

Chinese {{currentDetailLanguage}} Chinese

水土流失治理与水土保持效益模型

 

1. 面状、沟状流失区的治理

(1)水平沟单位蓄水量模型:

         

式中,W为单位长度来水量;L为蓄水沟的最大水平间距;d1为土壤透水缩减系数;h1为设计频率24h最大降雨量;Φ为径流系数;V1为临界冲刷流速;λ为流速系数;c为谢才系数;I为降雨强度;α为地面角度。

(2)水平梯田面宽模型:

             

式中,B为田面宽;H为田坎宽;BL为开挖山坡面斜宽;α为地面坡角;β为田坎侧坡坡角。

2. 崩岗流失的治理

(1)土谷坊坝身体积V模型:

               

式中,A为土谷坊坝身断面积;L为坝身平均长度;H为坝身平均高度;b土谷坊坝顶宽度;M为坝身上下游坡率总和。

(2)进沙量模型:

             V=KFRT

式中,V为设计使用年限内总进沙量;K为换算系数;F为拦沙坝总集雨体积;R为侵蚀模数;T为使用年限。

张茂泉,张雄辉:五华县水土流失治理与水土保持效益。水土保持通报,1998,18(2)

 

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How to Cite

《资源环境数学模型手册》 (2018). 水土流失治理与水土保持效益模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/24901d5f-0b30-475c-92a6-d133ca2006a9
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Last modifier : 
zhangshuo
Last modify time : 
2020-10-29
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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 : 
zhangshuo
Last modify time : 
2020-10-29
Modify times : 
View History

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