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扎木弄沟滑坡型泥石流物源及堵河溃坝可能性分析
Alternative TitleVolume of Loose Materials and the Analysis of Possibility of Blocking and Dam Break Triggered by Debris Flows in Zhamunonggou
李俊1,2; 陈宁生1; 欧阳朝军1; 李爱国3; 左玺龙3
Corresponding Author李俊
2017
Source Publication灾害学
ISSN1000-811X
Volume32Issue:1Pages:80-84
Abstract

研究易贡乡扎木弄沟泥石流物源及再次形成滑坡型泥石流堵河溃坝的可能性,对选择川藏铁路跨越易贡藏布的基础工程及附属设施具有重要的意义。首先基于工程地质分析方法和野外实际调查得出了扎木弄沟泥石流的物源总量。其次,通过三维数值模拟估算今后再次发生类似2000 年滑坡型泥石流的堆积范围和深度。最后,基于四种工况下滑坡型泥石流的堆积形态和2000 年堰塞坝物质组成分析了泥石流堵河及溃坝可能性。通过研究得出了如下结论: 扎木弄沟泥石流物源总量为2. 37 × 108 m3 ; 在地震( 地震烈度为Ⅷ度) 和极端气候工况下,今后再次发生类似2000 年的滑坡型泥石流有可能造成堵河; 在流域源头崩滑起动方量增大的情况下,堰塞坝溃
决的风险逐渐增加

Other Abstract

The study of volume of loose materials and the possibility of blocking and dam break triggered by debris flow mobilization from landslides in Zhamunonggou has important scientific and engineering significance.Firstly,we get the total volume of source of debris flow based on the engineering geology analysis method and field investigation. Secondly,we estimated the deposition range and depth of future debris flow by three dimensional numerical simulations. Lastly,we get the possibility of debris flow blocking river and dam break by the analysis of deposition and material composition of the dam in 2000. The following conclusions are obtained through the study: (1) the total volume of loose materials of debris flow is 2.37×108m3; (2) under the earthquake (seismic intensity is Ⅷ degrees) and extreme climate conditions,debris flow mobilization from landslides similar to the 2000 incident are likely to cause blockage; (3) dam break risk may increase gradually with the starting volume increases.

Keyword滑坡型泥石流 堵河数值模拟 扎木弄沟 西藏波密县易贡乡 川藏铁路
Subject AreaX43 ; P694
DOI10.3969/j.issn.1000-811X.2017.01.014
Indexed ByCSCD
Language中文
CSCD IDCSCD:5913826
Funding Organization国家自然科学基金重大项目( 41190084)
Citation statistics
Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18362
Collection山地灾害与地表过程重点实验室
Affiliation1.中国科学院·水利部成都山地灾害与环境研究所山地灾害与地表过程重点实验室
2.中国科学院大学
3.长江岩土工程总公司( 武汉)
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
李俊,陈宁生,欧阳朝军,等. 扎木弄沟滑坡型泥石流物源及堵河溃坝可能性分析[J]. 灾害学,2017,32(1):80-84.
APA 李俊,陈宁生,欧阳朝军,李爱国,&左玺龙.(2017).扎木弄沟滑坡型泥石流物源及堵河溃坝可能性分析.灾害学,32(1),80-84.
MLA 李俊,et al."扎木弄沟滑坡型泥石流物源及堵河溃坝可能性分析".灾害学 32.1(2017):80-84.
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