[1]杨成林,陈宁生,李战鲁.汶川地震次生泥石流形成模式与机理[J].自然灾害学报,2011,20(03):031-37.
 YANG Cheng-lin,CHEN Ning-sheng,LI Zhan-lu.Formation mode and mechanism fordebris flow induced by Wenchuan earthquake[J].,2011,20(03):031-37.
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汶川地震次生泥石流形成模式与机理
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
20
期数:
2011年03期
页码:
031-37
栏目:
出版日期:
2011-05-09

文章信息/Info

Title:
Formation mode and mechanism fordebris flow induced by Wenchuan earthquake
作者:
杨成林123 陈宁生13 李战鲁13
1. 中国科学院山地灾害与地表过程重点实验室, 四川成都 610041;
2. 中国科学院研究生院, 北京 100049;
3. 中国科学院水利部成都山地灾害与环境研究所, 四川成都 610041
Author(s):
YANG Cheng-lin123 CHEN Ning-sheng13 LI Zhan-lu13
1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049 China;
3. Key Lab of Mountain Hazards and Surface Processes, Chinese Academy of Sciences, Chengdu 610041China
关键词:
泥石流汶川地震山地灾害灾害防治
Keywords:
debris flowWenchuan earthquakemountain hazardhazard prevention
分类号:
P642.23
摘要:
以汶川地震灾区的典型的代表性泥石流案例为基础,分析了汶川地震次生泥石流的形成地形地貌、降水和土源条件特征,概括分析了汶川地震泥石流形成的5种模式,即:(1)沟床启动型;(2)坡面崩滑转化型;(3)震裂表土侵蚀启动型;(4)滑坡表面土体液化型和(5)松散坡积物冲切沟启动型.分析了这些形成模式的启动机理.地震次生泥石流的形成机理包括土力类和水力类.泥石流的形成需要一定的细颗粒含量,尤其是粘土颗粒含量;此外低密度干燥度较高的土体在降雨作用下易湿陷,体积收缩,从而有利于土体孔隙水压力的升高,而有利土体强度的降低,导致泥石流的启动.所以地震灾区的泥石流集中分布于干旱河谷松散固体物质大量存在且以花岗岩风化壳和碎屑岩及其变质岩为主的地区,降雨量特征与国内外众多泥石流的降雨特征可以比较,其模式多样.
Abstract:
This paper is based on combination study of the "5.12" Wenchuan earthquake-induced typical debris flow events.In the paper the debris flow landscape and landform,the precipitation and the earth condition were studied firstly.After that the Wenchuan earthquake debris flow-triggering models were revealed.These models include(1) valley triggering;(2)slope collapse and landslide triggering;(3)loose soil eroded by stream and rains;(4)landslide surface liquefied;(5) gully eroded.And the debris flow-triggering mechanism was explained at last.The debris flows of quake-stricken area distribute in the arid valley which abounds in weathered crust granite,clastic rock and metamorphic rock,and the precipitation nodes

参考文献/References:

[1] 马东涛,石玉成.试论地震在泥石流形成中的作用[J].西北地震学报,1996,18(4):38-42.
[2] 李树德,任秀生,岳升阳,徐海鹏.地震与泥石流活动[J].水土保持研究,2001,8(2):26-27.
[3] 吴积善,等.云南蒋家沟泥石流观测与研究[M].北京:科学出版社.1990:62-70.
[4] 杜榕桓,等.云南小江泥石流[M].重庆:科学技术文献出版社重庆分社,1987:103-113.
[5] 第宝锋,陈宁生,等.罗坝街沟泥石流特征分析[J].山地学报,2003,21(2):216-222.
[6] 陈宁生,等四川省山洪灾害防治规划[R].成都:中国科学院水利部成都山地灾害与环境研究所,2003,1-140.
[7] 陈宁生,等.不同粘粒含量土体失稳产生泥石流的机理研究[C]//第二十五届全国土工测试学术研讨会论文集.杭州:浙江大学出版社,2008.
[8] 陈宁生,崔鹏,王晓颖,第宝锋.地震作用下泥石流源区砾石土体强度的衰减实验[J].岩石力学与工程学报,2004,23(16):2743-2747.
[9] 崔鹏.泥石流起动机理的研究[D] 北京:北京林业大学,1990
[10] Chen Ningsheng,Cui Peng,Liu Zhonggang,Wei Fangqiang,Calculation of the debris flow concentration based on claycontent,Science in China Ser[J].E Technological Sciences 2003(46)Supp:163-174.
[11] Wang FW,Kyoji Sassa,Gonghui Wang.Mechanism of along-runout landslide triggered by the August 1998 heavy rain fall in Fukushmia Prefecture[J].Japan Engineering Geology,V.63,2002,pp.169-185
[12] 康志成.中国泥石流研究[M].北京:科学出版社,2004:15-45
[13] 陈晓清,等.泥石流起动原型试验及预报方法探索[J].中国地质灾害与防治学报,2006,17(4):73-77
[14] Wang FW,Kyoji Sassa,Gonghui Wang.Mechanism of along-runout landslide triggered by the August 1998 heavy rain fall in Fukushmia Prefecture[J].Japan Engineering Geology,V.63,2002,169-185
[15] Sassa K.Themechan ismstarting Liquefied lands lides and debris flows[A].Proc.4th Int.Sypm Land slide,1984:345-354
[16] 汪闻韶.土的动力强度和液化特征[M].北京:中国电力出版社.1997:131-135
[17] Fleming R W.et,al. Lands lide in Colluvium[J].U.S.Geological Survey Bullet in.1994.2059-B,24
[18] Ellen S D,Fleming R W Mobilization of debris flows from soul slips,San Francisco Bayregion,California[M] //Costa J.E.,Wieczorek,G.F.(Eds),Debris Flows,Avalan chees:Process,Recognition,and Mitigation.Geological Society of America Reviews in Engineering Geology,1987,vol. 7,Geological Society of American Boulder,CO,pp.31-40
[19] Vaughan P V.Oral Contribution and Discussion[A].Tropical 85.1985.3(3).pp.370-374
[20] Mshann N S et al. Effects of weathering on stability of natural slopes in north central Kumamoto[J].Soils and Foundations,1993,33(4):74-87
[21] 卢肇钧非饱和土抗剪强度的探索研究[J].中国铁道科学,1999,20(2):10-15
[22] 戚国庆,黄润秋泥石流成因机理的非饱和土力学理论研究[J].中国地质灾害与防治学报,2003,14(3):12-15
[23] Ching R K.Increase in factor of safety due to soil suction for wto Hong Kong Slopes[J].Proc.Int.Symp.Lands lide,1998:617-623
[24] Krahn J,et al. Effects of soilsuction on slope stab lityar North Hill Can[J].Geotech.J.1989,26:617-623
[25] Nieto A S,et al Catas trophic rain-indueed landsl ides in Riode Janier Brazil :Mechanisms and con tributing factors[J].Geo.Soc.Am.Abstracts with Programssbc.1988,20(7),PA.144.
[26] Sitar N et al. Conditions for initation of rain fallinduced debris flows[C]//Stability and Performanee of Slopes and Embankments II Geotechnieal Special Publieation No.31,1992,1(2):834-849.

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备注/Memo

备注/Memo:
收稿日期:2010-3-6;改回日期:2011-2-9。
基金项目:中国科学院知识创新工程项目“震裂坡地暴雨型泥石流滑坡综合防治理论与技术”资助
作者简介:杨成林(1983- ),男,博士研究生,主要从事泥石流形成机理及防治研究.E-mail:chyang@mide.ac.cn
通讯作者:陈宁生,男,研究员,博士生导师.E-mail:chennsh@mide.ac.cn
更新日期/Last Update: 1900-01-01