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西藏扎墨公路沿线泥石流的垂直地带性特征
Alternative TitleVertical Zonality Characteristics of Debris Flow Along Zhamo Highway in Tibet
党超1,2; 孙小凡1,2; 程尊兰3
Corresponding Author程尊兰
2018
Source Publication水土保持通报
ISSN1000-288X
Volume38Issue:3Pages:328-333
SubtypeArticle
Contribution Rank3
Abstract[目的]研究扎墨公路沿线泥石流的垂直地带性分异特征,为泥石流灾害的安全预警和防治提供科学依据。[方法]以20092015年进行的多次野外调查为基础,通过成因分析与案例研究,探讨地带性因素对扎墨公路沿线泥石流的分布、成因类型以及泥石流体性质等方面的影响,总结泥石流的垂直地带性分异规律。[结果]扎墨公路以东西向延伸的岗日嘎布山为界分为南北两段,其中北段穿过5个垂直带谱,南段穿过8个垂直带谱。泥石流的分布密度与暴发频率随着海拔的降低呈现出低、高、低的特征;成因类型由冰面湖溃决型、冰川型、融水降雨型泥石流逐渐过渡到降雨型泥石流;泥石流流体性质从泥流、水石流、稀性泥石流、亚黏性泥石流、黏性泥石流逐渐过渡,容重依次增大。[结论]随着公路沿线垂直带由Ⅰ带降低到Ⅷ带,泥石流的分布、成因类型和流体性质,随之发生有规律的变化,地带性分异特征在南段更加显著。
Other Abstract[Objective]To study the vertical zonality characteritics of debris flow along Zhamo highway in Tibet in order to provide basis for pre-warming and control of debris flow disasters.[Methods]Based on the field surveys conducted during the period from 2009to 2015,the influences of zonal factors on the distribution, genetic types and fluidic properties of debris flow along the Zhamo highway were discussed,and then the vertical zonality of debris flow were summarized by genetic analysis and case study.[Results]From south to north,Zhamo highway was divided into two sections by Mt.Gangrigabu,which passes through 5vertical belts in the south and 8vertical belts in the north.With the descending of altitude,the density and frequency of debris flows showed a lowhighlow tendency.The genetic types gradually changed from debris flow induced by glacial lake outburst flood,glacial debris flow,meltwater-rainfall debris flow,into the rainfall debris flow.Correspondingly,the fluidic properties gradually changed from the mud flow to diluent debris flow,sub-viscous debris flow,and finally into viscous debris flow.[Conclusion]With the vertical belt along the highway descending from theⅠbelt to theⅧbelt,distributions of debris flow,genetic types and fluidic properties changed regularly,particularly,the vertical zonality characteristics tend to be more conspicuous in the south section of the highway.
Keyword扎墨公路 泥石流 成因类型 流体性质 垂直地带性
DOI10.13961/j.cnki.stbctb.2018.03.053
Indexed ByCSCD
Language中文
CSCD IDCSCD:6283504
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23903
Collection山地灾害与地表过程重点实验室
Affiliation1.三峡库区地质灾害教育部重点实验室;
2.三峡大学土木与建筑学院;
3.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
党超,孙小凡,程尊兰. 西藏扎墨公路沿线泥石流的垂直地带性特征[J]. 水土保持通报,2018,38(3):328-333.
APA 党超,孙小凡,&程尊兰.(2018).西藏扎墨公路沿线泥石流的垂直地带性特征.水土保持通报,38(3),328-333.
MLA 党超,et al."西藏扎墨公路沿线泥石流的垂直地带性特征".水土保持通报 38.3(2018):328-333.
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