基于参数反演的保扎滑坡变形破坏机理研究

胡新丽 唐辉明 李长冬 王亮清 刘佑荣

胡新丽, 唐辉明, 李长冬, 王亮清, 刘佑荣. 2011: 基于参数反演的保扎滑坡变形破坏机理研究. 工程地质学报, 19(6): 795-801.
引用本文: 胡新丽, 唐辉明, 李长冬, 王亮清, 刘佑荣. 2011: 基于参数反演的保扎滑坡变形破坏机理研究. 工程地质学报, 19(6): 795-801.
HU Xinli, TANG Huiming, LI Changdong, WANG Liangqing, LIU Yourong. 2011: DEFORMATION MECHANISM OF BAOZHA LANDSLIDE WITH PARAMETRIC BACK ANALYSIS. JOURNAL OF ENGINEERING GEOLOGY, 19(6): 795-801.
Citation: HU Xinli, TANG Huiming, LI Changdong, WANG Liangqing, LIU Yourong. 2011: DEFORMATION MECHANISM OF BAOZHA LANDSLIDE WITH PARAMETRIC BACK ANALYSIS. JOURNAL OF ENGINEERING GEOLOGY, 19(6): 795-801.

基于参数反演的保扎滑坡变形破坏机理研究

基金项目: 

国家自然科学基金项目(40872175)和国家重点基础研究发展计划(973计划)课题(2011CB710604)资助

详细信息
    作者简介:

    胡新丽,从事岩土工程稳定性评价、地质灾害防治设计教学与科研.Email: huxli2000@163.com

  • 中图分类号: P642.22

DEFORMATION MECHANISM OF BAOZHA LANDSLIDE WITH PARAMETRIC BACK ANALYSIS

  • 摘要: 大型复杂滑坡的复活变形机理研究,是目前滑坡地质灾害研究热点之一。针对恩施地区典型大型复杂滑坡-保扎滑坡,在系统研究其工程地质条件的基础上,分析了该滑坡的形成机制。建立二维计算模型,利用Flac软件,依据钻孔位移监测数据,通过位移反分析反演岩土体参数。对滑坡天然状态、河流不同下切深度进行了三种工况的模拟分析,结果表明:①保扎滑坡为牵引式滑坡。滑坡发育于志留系易滑岩组,滑坡形成的诱发因素是前缘老沟河的不断侵蚀下切与掏蚀,滑塌变形不断向中后部发展,从而引发整体滑动。②目前影响保扎滑坡变形与稳定性的主要因素为滑坡前缘河流下切及降雨;③保扎滑坡目前处于整体稳定状态。随着河流下切深度的增加,该滑坡将产生渐进式牵引破坏。建议对滑坡前缘进行治理。
  • [1] Matsui T,San KC.Finite element slope stability analysis by shear strength reduction technique[J].Soils and Foundations, 1992, 32 (1): 59~70.

    [2] Muller L.The rock slide in the Vajont valley[J].Rock Mechanics and Engineering Geology, 1964, 2 (1): 148~222.

    [3] Tang Huiming,Deng Qinglu,Hu Xinli,Research on the characteristics and slope deformation regularity of the Badong formation in the Three Gorges reservoir area .In Wang F,Li T(eds.).Landslide Disaster Mitigation in Three Gorges Reservoir,China,Berlin,Heidelberg : Springer, 2009, 87~113.

    [4] 胡新丽.David M Potts,Lodijia Zdrakovic' Jinle.三峡水库运行条件下金乐滑坡稳定性评价[J].地球科学, 2007, 32 (3): 403~408. Hu Xinli. David M Potts,Lidija Zdravkovic' Jinle.Landslide stability under water level fluctuation of Three Gorges Reservoir.Earth Science-Journal of China University of Geosicences, 2007, 32 (3): 403~408.

    [5] 范文, 俞茂宏,李同录,等.层状岩体边坡变形破坏模式及滑坡稳定性数值分析[J].岩石力学与工程学报, 2000, 19 (S1): 983~986. Fan Wen,Yu Maohong,Li Tonglu,et al.Failure pattern and numerical simulation of landslide stability of stratified rock.Chinese Journal of Rock Mechanics and Engineering, 2000, 19 (S1): 983~986.

    [6] 白永健, 郑万模,邓国仕,等.四川丹巴甲居滑坡动态变形过程三维系统监测及数值模拟分析[J].岩石力学与工程学报, 2011, 30 (5): 974~981. Bai Yongjian,Zheng Wanmo,Deng Guoshi, et al.Three-dimesional system monitoring and numerical simulation on the dynamic deformation process of Jiaju landslide in Danba,Sichuan.Chinese Journal of Rock Mechanics and Engineering, 2011, 30 (5): 974~981.

    [7] Sammori T and Tsuboyama Y.Parametric study on slope stability with numerical simulation in consideration of seepage process .In: Bell(ed.)On Landslide: Proc.6th,Int.Symp . Balkema: Rotterdam, 539~544.

    [8] Sakurai S.Field measurement and back analysis . In: G Beer,JR Booker,JPC Carter(eds.),Computer Methods and Advances in Geomechanics: Proceedings of the Seventh International Conference on Computer Methods and Advances in Geomechanics ,Cairns, 6-10May 1991,Rotterdam: Balkema, 1992.

    [9] 刘迎曦, 吴立军,韩国城.边坡地层参数的优化反演[J].岩土工程学报, 2001, 23 (3): 315~318. Liu Yingxi,Wu Lijun,Han Guocheng.Optimization inversion for identifying ground parameters of slope.Chinese Jounal of Geotechnical Engineering, 2001, 23 (3): 315~318.

    [10] 孙钧, 黄伟.岩石力学参数弹塑性反演问题的优化方法[J].岩石力学与工程学报, 1992, 11 (3): 221~229. Sun Jun,Huang Wei.An optimization method for the elastoplastic inversion of parameters in rock mechanics.Chinese Journal of Rock Mechanics and Engineering, 1992, 11 (3): 221~229.

    [11] 高玮. 基于粒子群优化的岩土工程反分析研究[J].岩土力学, 2006, 27 (5): 795~798. Gao Wei. Back analysis algorithm in geotechnical engineering based on particle swarm optimization.Rock and Soil Mechanics, 2006, 27 (5): 795~798.

    [12] 高玮, 郑颖人.采用快速遗传算法进行岩土工程反分析[J].岩土工程学报, 2001, 23 (1): 120~122. Gao Wei,Zheng Yingren.Back analysis in geotechnical engineering based on fast-convergent genetic algorithm.Chinese Jounal of Geotechnical Engineering, 2001, 23 (1): 120~122.
  • 加载中
计量
  • 文章访问数:  4249
  • HTML全文浏览量:  119
  • PDF下载量:  1176
  • 被引次数: 0
出版历程
  • 收稿日期:  2011-05-30
  • 修回日期:  2011-10-28
  • 刊出日期:  2011-12-25

目录

    /

    返回文章
    返回