沟道防护体系建设拦蓄效益模型

沟道防护体系建设拦蓄效益模型

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Contributor(s)

Initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Application-focused categoriesHuman-perspectiveEconomic activities

Model Description

Chinese {{currentDetailLanguage}} Chinese

沟道防护体系建设拦蓄效益模型

    1.沟道防护体系建设

   1)洪峰流量Qp模型:

                 

式中,C为径流系数;F为集水面积;Lp为频率为P的暴雨强度;Sp为设计一个小时暴雨量;T为集流时间;n为暴雨递减指数。

   2)溢流水深H0模型:

                

式中,H0为矩形断面溢流深;B为溢流宽度。

3)坝顶宽B模型:

             

式中,P为水和游沙对滑动体的水平压力;P为水对滑动体的水平压力;P尾游沙压力;r0为水流重率;H1为滑动体高度与溢流水深之和;H为谷坊高度。

    4)坝顶砌石大小模型:

                 

式中,D为砌石转换成圆形石的直径;r0为浑水容重;Vkp为推移石块的临界流速;hkp为临界水深;A为系数;r1为砌石比重;W为砌石重量;k为安全系数。

     2.拦蓄效益

      削减洪峰流量效益模型:

                 

式中,Qm为治理前洪峰流量;Q为治理后洪峰流量。

胡高地,张丙申,杨文胜:基岩山地小流域治理开发途径探讨——以暴雨中心区鲁山县清水河试点流域为例。水土保持通报,1995,15(1)

How to Cite

《资源环境数学模型手册》 (2018). 沟道防护体系建设拦蓄效益模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/f2ce1b5b-de69-4a02-91ab-b0b35da6de28
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Last modifier : 
zhangshuo
Last modify time : 
2020-11-30
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Contributor

Initial contribute: 2018-12-04

Co-contributor(s)

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 : 
2020-11-30
Modify times : 
View History

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