| 四川都江堰龙溪河流域泥石流成因、特征和危险性评价 |
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| 引用本文： | 李彩侠,马煜.四川都江堰龙溪河流域泥石流成因、特征和危险性评价[J].地质与资源,1992,28(3):298-304. |
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| 作者姓名： | 李彩侠 马煜 |
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| 作者单位： | 成都理工大学 工程技术学院, 四川 乐山 614000 |
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| 基金项目： | 四川省教育厅科研基金（18ZA0076，16ZB0407）；成都理工大学工程技术学院青年科学基金（C122016020，C122017009）；成都理工大学工程技术学院院级教改项目（2016-YY-JG16）. |
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| 摘 要： | 在汶川地震影响下，截至2011年龙溪河流域共计有45条泥石流沟暴发泥石流，造成重大经济财产损失.在龙溪河流域泥石流灾害野外调查的基础上，对形成泥石流的地形、降水、物源成因进行了研究，认为物源和降水是激发龙溪河流域泥石流的主要原因.龙溪河流域泥石流具有群发性和小流域暴发性特征，构造带耦合特征，破坏性大和灾害链作用特征.采用MFCAM模型对龙溪河流域泥石流沟进行危险性评价，结果显示有1条沟危险性大，14条危险性中等，30条危险性小.
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| 关 键 词： | 泥石流 成因 危险性评价 龙溪河流域 四川省 |
| 收稿时间： | 2018-04-23 |
CAUSES,CHARACTERISTICS AND HAZARD ASSESSMENT OF THE DEBRIS FLOWS IN LONGXI RIVER BASIN,SICHUAN PROVINCE |
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| LI Cai-xia,MA Yu.CAUSES,CHARACTERISTICS AND HAZARD ASSESSMENT OF THE DEBRIS FLOWS IN LONGXI RIVER BASIN,SICHUAN PROVINCE[J].Geology and Resources,1992,28(3):298-304. |
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| Authors: | LI Cai-xia MA Yu |
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| Institution: | School of Engineering&Technology, Chengdu University of Technology, Leshan 614000, Sichuan Province, China |
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| Abstract: | Under the influence of the Wenchuan Earthquake, debris flows have taken place in a total of 45 gullies in Longxi River Basin by 2011, causing heavy economic and property losses. The landform, precipitation and provenance are studied based on the field investigation of debris flow disasters. It is believed that the latter two are the main causes for debris flows in the area. The debris flows are characterized by group occurrence, small river basin outbreak, structural belt coupling, huge destructiveness and disaster chain. The MFCAM model is used for the hazard assessment of debris flow gullies. The results show that there is one gully with high risk, 14 with moderate risk and 30 with low risk in the area. |
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| Keywords: | debris flow cause hazard assessment Longxi River Basin Sichuan Province |
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