| 三眼峪特大泥石流堆积特征 |
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| 引用本文： | 朱立峰,赵成,于国强,胡向德,李瑞冬.三眼峪特大泥石流堆积特征[J].西北地质,2011,44(3):30-37. |
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| 作者姓名： | 朱立峰 赵成 于国强 胡向德 李瑞冬 |
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| 作者单位： | 1. 中国地质调查局西安地质调查中心,西安,710054
2. 甘肃省地质环境监测院,兰州,730020 |
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| 基金项目： | 国土资源大调查计划项目"西北黄土高原区地质灾害详细调查"，国土资源大调查项目"甘肃省白龙江流域主要城镇环境工程地质勘查"，国土资源大调查项目"小秦岭金矿区环境地质问题调查与评价" |
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| 摘 要： | 通过野外勘查与试验，认为三眼峪泥石流沟是一个高频泥石流沟，历史上发生多次重大泥石流灾害事件，多期泥石流堆积物在沟道及沟口上下超覆叠置。结合泥石流发生前后遥感影像对比，采用ArcGIS平台进行分析，“8．8”特大泥石流一次最大冲出固体物质总量达152．18×10^4m^3，所到之处房毁江堵，并形成长约1．9km的狭长堆积，堆积量110．58×10^4m^3，最大堆积厚度达10．8m。因泥石流堆积特征是泥石流发生、发展、活动过程的客观记录，分析了三眼峪早期和“8．8”泥石流在不同部位的堆积特征和破坏程度，为泥石流综合整治和灾后重建规划提供参考。
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| 关 键 词： | 泥石流 历史灾情 早期堆积 堆积特征 舟曲 |
Accumulation Characteristics of Sanyanyu Extremely Big Debris Flow |
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| ZHU Li-feng,ZHAO Cheng,YU Guo-qiang,HU Xiang-de,LI Rui-dong.Accumulation Characteristics of Sanyanyu Extremely Big Debris Flow[J].Northwestern Geology,2011,44(3):30-37. |
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| Authors: | ZHU Li-feng ZHAO Cheng YU Guo-qiang HU Xiang-de LI Rui-dong |
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| Institution: | ZHU Li-feng1,ZHAO Cheng2,YU Guo-qiang1,HU Xiang-de2,LI Rui-dong2(1.Xi'an Centre of Geological Survey,CGS,Xi'an 710054,China,2.Gansu Instituteof Geological Environment Monitoring,Lanzhou 730020,China) |
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| Abstract: | Based on site investigation and tests,it is found that Sanyanyu is a high-frequency debris flow gully with many catastrophic debris flow occurred in history.Debris flow deposits of different periods overlay each other.By comparing the remote sensing images before and after the debris flow and taking ArcGIS as an analyzing tool,it is found that 8.8 extremely big debris flow carries large amount of solids with a total volume of 1.521 8 million m3,damaging buildings and blocking rivers.It forms 1.9km long narr... |
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| Keywords: | debris flow historical disaster earlier deposits accumulation characteristics Zhouqu |
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