普格县荞窝镇8. 8泥石流灾害应急调查研究
Emergency Investigation on Debris Flow 8. 8 Disaster in Qiaowo Town,Puge County,Sichuan,China
查看参考文献6篇
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文摘
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2017年8月8日凌晨4点至4点30分,普格县荞窝镇耿底村4组和5组发生泥石流灾害,导致25人死亡, 71间房屋损毁,造成1. 6亿元经济损失。采用现场调查、室内分析实验、参数模拟计算等方法对灾害的特征和成因进行了分析。研究结果显示8. 8普格泥石流属于低频率中等规模的稀性泥石流。泥石流是由于流域内广泛发育的“凹槽土体”在旱后叠加暴雨的影响下激发的,其成灾过程是一系列致灾因素叠加的结果。首先,灾害与乡村道路堵塞行洪道关系密切;此外区域灾害伏旱后由局地强降雨引发,流域自然条件复杂;隐蔽性强低频率的老泥石流沟排查识别困难;流域上游无雨量观测站点,难以准确预警;洪流夜间发生,逃生难度大等因素的存在进一步促使灾害发生。 |
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其他语种文摘
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It was to investigate the genesis of a debris flow event occurred at 4 and 5 Gudong Village,Qiaowo Town,Puge County from 4 am to 4: 30 am on August 8,2017,which caused 25 deaths,71 houses damaged and a large economic loss of 160 million yuan. The characteristics and causes of disasters were analyzed on the basis of field investigation,laboratory test and simulation. The results showed that 8. 8 Puge debris flow was a lowfrequency and medium-scale debris flow. It was triggered by the extensive development of hollow in the basin under the influence of superimposed rainstorm after drought,and the disaster process was a result of a series of superimposed disaster-triggering factors. First of all,the rural roads blocked the flood channel; In addition, regional natural disasters were triggered by heavy rainfalls after summer drought,which led to complex natural conditions; There was difficulty in identifying old debris flow gully with low-frequent and latent. Some factors like time,speed,difficulty of escape and so on,all of them contributed to the initiation of the disaster. |
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来源
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山地学报
,2018,36(3):482-487 【核心库】
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DOI
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10.16089/j.cnki.1008-2786.000344
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关键词
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普格县
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桐子林沟
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灾害性泥石流
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运动特征
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灾害成因
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地址
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中国科学院、水利部成都山地灾害与环境研究所, 中国科学院山地灾害与地表过程重点实验室, 成都, 610041
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1008-2786 |
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学科
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地质学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:6281985
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