| 三眼峪特大泥石流形成的物源条件分析 |
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| 引用本文： | 李瑞冬,王根龙,赵成,胡向德,朱立峰,曾庆铭.三眼峪特大泥石流形成的物源条件分析[J].西北地质,2011,44(3):21-29. |
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| 作者姓名： | 李瑞冬 王根龙 赵成 胡向德 朱立峰 曾庆铭 |
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| 作者单位： | 1. 甘肃省地质环境监测院,兰州,730050
2. 中国地质调查局西安地质调查中心,西安,710054 |
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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： | 通过对舟曲县"8.8"特大山洪泥石流三眼峪沟进行现场调查,从泥石流的岩土体类型及特征、地质构造、水文地质、新构造运动及地震等方面,对物源条件的地质环境背景进行了总结.调查结果表明:①三眼峪沟泥石流的松散固体物质主要包括崩塌堆积物、滑坡堆积物、残坡积物和冲洪积物.②三眼峪沟松散固体物质总量4079.42×104m3,流域...
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| 关 键 词： | 物源地质环境 三眼峪泥石流 崩滑堆积物 残坡积物 冲洪积物 |
Analysis of Material Sources Derived from Sanyanyu Debris Flow in Zhouqu County |
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| LI Rui-dong,WANG Gen-long,ZHAO Cheng,HU Xiang-de,ZHU Li-feng,ZENG Qing-ming.Analysis of Material Sources Derived from Sanyanyu Debris Flow in Zhouqu County[J].Northwestern Geology,2011,44(3):21-29. |
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| Authors: | LI Rui-dong WANG Gen-long ZHAO Cheng HU Xiang-de ZHU Li-feng ZENG Qing-ming |
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| Institution: | LI Rui-dong1,WANG Gen-long2,ZHAO Cheng1,HU Xiang-de1,ZHU Li-feng2,ZENG Qing-ming2(1.Gansu Institute of Geological Environment Monitoring,Lanzhou 730050,China,2.Xi'an Center of Geological Survey,CGS,Xi'an 710054,China) |
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| Abstract: | Through the field investigation of Sanyanyu Valley in Zhouqu county where occurred the giant flush flood and debris flow on August 8,2010,the author summarized the geological environment background of loose solid material sources from several aspects of topography,stratum lithology,geological structure,hydrological geology,new tectonic movement and earthquake.Investigation results show that:①The loose solid matter of Sanyanyu debris flow mainly include collapse deposit,landslide deposit,eluvial deposit,talus deposit and trench deposit.②The total volume of loose solid matter of Sanyanyu valley is about 40 794 200 m3,which can convert to debris flow nearly 26 445 400 m3(64.8%).③The fundamental mode of Sanyanyu Gully loose mass converted to the components of debris flow included collapse and landslide deposited directly or fluvial eroded and transported by jamming trench;The fine grain material of gully slope’s remnant slope sediment,the landside mass,the collapse body flowed into the trench under the rainfall’s surface erosion function,supplied the debris flow and increased its viscosity;The early debris flow deposit in trench was eroded and transported directly,constituted the debris flow mass. |
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| Keywords: | geological environment Sanyanyu debris flow collapse and landslide deposit eluvial deposit alluvium deposit |
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