| 方群生,唐川,程霄,王帅永,张卫旭,卜祥航.汶川震区泥石流流域内滑坡物源量计算方法探讨[J].水利学报,2015,46(11):1298-1304 |
| 汶川震区泥石流流域内滑坡物源量计算方法探讨 |
| An calculation method for predicting landslides volumes of the debris flows in the Wenchuan earthquake area |
| 投稿时间：2015-03-31 |
| DOI：10.13243/j.cnki.slxb.20150352 |
| 中文关键词: 泥石流流域 滑坡物源量 滑坡平均厚度 计算方法 |
| 英文关键词: debris flowcatchments landslide volumes landslide average thickness calculation method |
| 基金项目:科技基础性工作专项(2011FY110100-3);国家重点实验室团队项目(SKLGP2012Z002) |
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| 摘要点击次数: 1971 |
| 全文下载次数: 27 |
| 中文摘要: |
| 汶川地震后,震区山体破碎严重,滑坡、崩塌、泥石流等地质灾害频发,而泥石流流域内滑坡物源量直接影响泥石流暴发规模。笔者经过野外实际调查,以研究区的35条泥石流沟的147组滑坡体积、平均厚度、面积数据为样本进行分析,利用Matlab软件对泥石流流域内滑坡体积和面积、平均厚度和面积、平均厚度和体积分别进行单因子回归分析,发现泥石流流域内滑坡体积和面积之间具有明显的幂函数的相关关系,而滑坡平均厚度和面积、平均厚度和体积之间具有明显的对数函数的相关关系,从而建立泥石流流域内滑坡物源量的计算模型。该模型为汶川震区泥石流流域内滑坡物源量的快速计算提供科学有效的方程,并且为该区域泥石流的危险性评价在滑坡物源因素上提供计算方法。 |
| 英文摘要: |
| Debris flows have been remobilized from the earthquake-induced landslides and avalanches triggered by the Wenchuan earthquake in the Wenchuan area. Meanwhile,landslides volumes of the debris flows directly affect the scale of debris flow. This paper uses the investigation data from field survey in examining 35 debris flow gullies which conduct 147 sets of data for the landslide volume, average thickness and area. The regression analysis on the landslide volume and area with the landslide average thickness in debris flow basin is processed using the software Matlab. It is found that not only the landslide volume and area have an obvious power function correlation, but also the landslide volume and average thickness have an obvious logarithmic function correlation with the landslide area and average thickness. The model provides effective and scientific equations to calculate the debris flow volumes rapidly and can serve to assessing the debris flow hazardous zones for the material in the debris-flow catchments. |
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