| 四川省甘洛县2019年群发性山洪泥石流灾害的形成机理 |
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| 引用本文： | 李钰,甘滨蕊,王协康,陈明亮,周家文.四川省甘洛县2019年群发性山洪泥石流灾害的形成机理[J].水土保持通报,2020,40(6):281-287. |
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| 作者姓名： | 李钰 甘滨蕊 王协康 陈明亮 周家文 |
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| 作者单位： | 四川大学 水力学与山区河流开发保护国家重点实验室, 四川 成都 610065;四川大学 水利水电学院, 四川 成都 610065 |
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| 基金项目： | 国家重点研发计划项目“山区暴雨山洪水沙灾害预报预警防控平台构建与示范”（2019YFC1510705）；国家自然科学基金重点项目“西南山区暴雨诱发泥沙补给突变下的山洪灾害研究”（51639007） |
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| 摘 要： | 目的] 对四川省甘洛县2019年群发性山洪泥石流灾害成因机理进行分析，为山区山洪泥石流灾害防控减灾提供参考。方法] 对2019年甘洛县山洪泥石流灾害开展现场调查，并结合相关影像和雨情数据等资料，对山洪泥石流灾害的影响因素以及形成机理进行分析。结果] 2019年甘洛县山洪泥石流主要是由于短期强降雨所诱发的，加之区内有丰富的固体物源以及有利的地形地貌条件；山洪泥石流灾害是洪水与固体物质相互作用共同致灾的产物；山洪泥石流运动过程中受到地形以及一些工程设施的影响比较明显；同时山洪泥石流会挤压主河道甚至阻断河道，从而导致更大灾害。结论] 基于甘洛县山洪泥石流灾害的形成机理与致灾特征，应该以加强灾区生态修复与水土保持为本，采取工程防治与生态防治相结合的治灾措施。
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| 关 键 词： | 山洪泥石流 影响因素 形成机理 致灾模式 防控措施 甘洛县 |
| 收稿时间： | 2020/6/24 0:00:00 |
| 修稿时间： | 2020/7/17 0:00:00 |
Formation Mechanism of Group Flash Flood/Debris Flow Disasters in Ganluo County, Sichuan Province in 2019 |
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| Li Yu,Gan Binrui,Wang Xiekang,Chen Mingliang,Zhou Jiawen.Formation Mechanism of Group Flash Flood/Debris Flow Disasters in Ganluo County, Sichuan Province in 2019[J].Bulletin of Soil and Water Conservation,2020,40(6):281-287. |
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| Authors: | Li Yu Gan Binrui Wang Xiekang Chen Mingliang Zhou Jiawen |
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| Institution: | State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan 610065, China;College of Water Resource and Hydropower, Sichuan University, Chengdu, Sichuan 610065, China |
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| Abstract: | Objective] The formation mechanism of the group flash flood/debris flow disasters in Ganluo County of Sichuan Province in 2019 was analyzed in order to provide a reference for the prevention and mitigation of flash flood/debris flow disasters in mountainous areas.Methods] Based on the field investigation of the group flash flood/debris flow disasters in Ganluo County in 2019, combined with relevant images and rainfall data, the influencing factors and formation mechanism of flash flood/debris flow disasters were analyzed.Results] The flash flood/debris flow disasters in Ganluo County were mainly caused by short-term heavy rainfall, in addition, there were abundant solid resources and favorable landform conditions in the area. The flash flood/debris flow disasters were the production of the interaction between flood and solid materials. The flash flood/debris flow movement was affected by terrain and some engineering facilities. Meanwhile, the flash flood/debris flow squeezed the main channel or even blocked the channel, thus leading to more disasters.Conclusion] Based on the formation mechanism and disaster-causing characteristics of flash flood/debris flow disasters in Ganluo County, the disaster control measures shuld be based on strengthening ecological restoration and soil and water conservation in disaster-stricken areas, and combining engineering prevention and ecological control. |
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| Keywords: | flash flood/debris flow formation mechanism disaster mode prevention and control measures Ganluo County |
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