| 都江堰市龙池镇麻柳沟泥石流特征及形成条件分析 |
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| 引用本文： | 薛强,张茂省,曾庆铭,徐继维.都江堰市龙池镇麻柳沟泥石流特征及形成条件分析[J].西北地质,2014(3):177-184. |
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| 作者姓名： | 薛强 张茂省 曾庆铭 徐继维 |
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| 作者单位： | 国土资源部黄土地质灾害重点实验室,中国地质调查局西安地质调查中心,陕西西安710054 |
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| 基金项目： | 中国地质调查局地质调查项目（1212011140018;12120114025901） |
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| 摘 要： | 通过对都江堰市龙池镇麻柳沟泥石流灾害现场调查,分析了泥石流的特征及形成条件,并对沟道内松散固体物质储量进行了计算,分析了危险区范围。结果表明:麻柳沟流域的地形特征为泥石流形成提供了有利的地形条件,"5.12"汶川地震和"4.20"芦山地震为泥石流的形成提供了丰富的物源条件,多次强降雨为泥石流的启动提供了充足的水源条件。通过计算得出,麻柳沟沟道内的松散固体物质储量约为29.21×104 m3,其中形成区13.19×104 m3,流通区3.27×104 m3,堆积区12.75×104 m3,泥石流最大危险范围为0.247 1km2。
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| 关 键 词： | 麻柳沟 泥石流 特征 形成条件 |
Characteristics and Formation Conditions of Maliu Gully Debris Flow in Longchi,Dujiangyan, Sichuan Province |
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| XUE Qiang,ZHANG Mao-sheng,ZENG Qing-ming,XU Ji-wei.Characteristics and Formation Conditions of Maliu Gully Debris Flow in Longchi,Dujiangyan, Sichuan Province[J].Northwestern Geology,2014(3):177-184. |
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| Authors: | XUE Qiang ZHANG Mao-sheng ZENG Qing-ming XU Ji-wei |
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| Institution: | (Key Laboratory for Geo-hazards in Loess Area, MLR, Xi＇an Center of Geological Survey, China Geology Survey, Xi＇an 710054, China) |
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| Abstract: | The characteristics and formation conditions of Maliu gully debris flow were analyzed by field investigation in Longchi, Dujiangyan, Sichuan Province. The storage capacity of loosening solid matter was calculated and the range of danger zone in this area was designated. The results show that the topographic characteristics of Maliu gully basin provided favorable terrain conditions for the debris flow; besides, the Wenchuan earthquake and the Lushan earthquake have provided rich source conditions, and many heavy rainfall events have offered adequate water conditions for the formation of the debris flow. Moreover, the calculations show that the storage capacity of loosening solid matter is about 29.21×10^4 m3 in Maliu gully, with about 13. 19 ×10^4 m3 in formation area, 3. 27 ×10^4 m3 in flowing area, 12. 75 ×10^4 m3 in accumulation area. In addition, the maximal hazard zone range of debris flow is 0. 2471 km2. Key words. Maliu gully; debris flow; characteristics; formation conditions |
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| Keywords: | Maliu gully debris flow characteristics formation conditions |
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