泥石流基本特征值的计算模型

泥石流基本特征值的计算模型

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Initial contribute: 2018-12-04

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岳天祥编著
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yue@lreis.ac.cn
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泥石流基本特征值的计算模型

1)稀性泥石流流速公式:

  式中,为泥石流流速;为相同条件下的清水流速;,分别为泥石流及泥石质的容重。

        2)黏性泥石流流速公式:

                 

  式中,为泥石流浆体样品固体颗粒平均粒径;η为浆体刚性系数;H为水深;g为重力加速率。

        3)泥石流的冲击力公式:

                   

  式中,为冲击时的动荷系数;W为个别石块的重量;为被撞击建筑物在静荷载下的变形。

  根据蒋家沟测试初步分析,泥石流流体的整体压力计算公式为(另一类泥石流冲击力计算公式):

            

   式中,K为表征泥石流不均质性的系数;ρ为泥石流流体密度。

 

参考文献:

   唐邦兴,杜榕桓,康志成等:我国泥石流研究。地理学报,1980,353

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《资源环境数学模型手册》 (2018). 泥石流基本特征值的计算模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/aaa0be13-6e56-4406-9488-6d60906e090d
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zhengzhong
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Initial contribute : 2018-12-04

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岳天祥编著
:  
yue@lreis.ac.cn
:  
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zhengzhong
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