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三峡库区塔坪H2古滑坡台阶状复活变形的库水-降雨耦合作用机制

黄达, 顾东明, 陈智强, 朱宏, 陈赐金

黄达, 顾东明, 陈智强, 朱宏, 陈赐金. 三峡库区塔坪H2古滑坡台阶状复活变形的库水-降雨耦合作用机制[J]. 岩土工程学报, 2017, 39(12): 2203-2211. DOI: 10.11779/CJGE201712008
引用本文: 黄达, 顾东明, 陈智强, 朱宏, 陈赐金. 三峡库区塔坪H2古滑坡台阶状复活变形的库水-降雨耦合作用机制[J]. 岩土工程学报, 2017, 39(12): 2203-2211. DOI: 10.11779/CJGE201712008
HUANG Da, GU Dong-ming, CHEN Zhi-qiang, ZHU Hong, CHEN Ci-jin. Hybrid effects of rainfall and reservoir level fluctuation on old Taping H2 landslide in Wushan County in Three Gorges Reservoir area[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(12): 2203-2211. DOI: 10.11779/CJGE201712008
Citation: HUANG Da, GU Dong-ming, CHEN Zhi-qiang, ZHU Hong, CHEN Ci-jin. Hybrid effects of rainfall and reservoir level fluctuation on old Taping H2 landslide in Wushan County in Three Gorges Reservoir area[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(12): 2203-2211. DOI: 10.11779/CJGE201712008

三峡库区塔坪H2古滑坡台阶状复活变形的库水-降雨耦合作用机制  English Version

基金项目: 国家自然科学基金面上项目(41472245,41672300); 重庆市国土房管科技计划项目(CQGT-KJ-2014049); 中央高校基本科研业务费重大项目(106112016CDJZR208804)
详细信息
    作者简介:

    黄 达(1976- ),男,博士,教授,博士生导师,主要从事岩体力学及地质灾害方面的研究与教学工作。E-mail: hdcqy@126.com。

  • 中图分类号: TU43

Hybrid effects of rainfall and reservoir level fluctuation on old Taping H2 landslide in Wushan County in Three Gorges Reservoir area

  • 摘要: 三峡水库蓄水以来,出现了大量大规模的老滑坡体复活现象。较多大型复活滑坡体的监测位移-时间曲线呈台阶状阶跃变化。此类滑坡的稳定状态识别难度较大,严重影响治理方案及治理时机的选择。以巫山曲尺塔坪H2滑坡为例,通过地质、位移监测及数值模拟方法,研究了此滑坡在实际降雨与库水涨落条件下渗流场、稳定性以及变形场演化规律。在汛期及库水位变动时期滑坡会发生变形,特别是库水位下降诱发滑坡前缘变形,并对后部坡体产生牵引作用。而降雨主要影响库水位变动带以上部分滑体的变形,并对前缘坡体产生推动作用。在周期性降雨和库水位涨落的循环作用下,滑坡体反复受到“推-拉”作用,导致滑坡的位移-时间曲线呈现台阶状阶跃特征。总体来说,库水位涨落是滑坡变形的主要因素,而降雨促进了滑坡变形进一步发展。
    Abstract: Since the first impoundment of Three Gorges Reservoir, a large number of old landslides have shown signs of reactivation. Usually, the displacements of these large landslides are characterized by a stepped pattern. Besides, the stability identification of the slides is difficult, which severely affects the choice of appropriate measurements and timing of treatment. By taking the H1 sliding mass of Quchi landslide as an example, based on the geological survey, displacement monitoring and numerical modelling, the seepage field, stability and deformation of the landslide under the influence of reservoir level fluctuation and rainfall are fully studied. It is revealed that the changes in reservoir levels have a great influence on the deformation of the landslide, especially, the significant deformations at the toe are induced by reservoir drawdown, which then “drags” the masses in the upper part down. The precipitation affects the deformation of sliding mass above the water fluctuation zone, whose collapse “pushes” the masses at the toe downslope. Under the periodic action of changes in reservoir levels and rainfall, the sliding masses are subjected to “drag-push” influences iteratively and thus exhihit a staged deformation characteristic. On the whole, the fluctuating water level is the main trigger of the deformation while the precipitation facilitates this progress.
  • [1] 卢书强, 易庆林, 易 武, 等. 库水下降作用下滑坡动态变形机理分析——以三峡库区白水河滑坡为例[J]. 工程地质学报, 2014, 22(5): 869-875. (LU Shu-qiang, YI Qing-lin, YI Wu, et al. Study on dynamic deformation mechanism of landslide in drawdown of reservoir water level——taking Baishuihe landslide in Three Gorges Reservoir area for example[J]. Journal of Engineering Geology, 2014, 22(5): 869-875. (in Chinese))
    [2] 谢守益, 徐卫亚. 降雨诱发滑坡机制研究[J]. 武汉水利电力大学学报, 1999(1): 22-24. (XIE Shou-yi, XU Wei-ya. Mechanism of landslides induced by precipitation[J]. J Wuhan Univ of Hydr & Elec Eng, 1999(1): 22-24. (in Chinese))
    [3] 林孝松, 郭 跃. 滑坡与降雨的耦合关系研究[J]. 灾害学, 2001(2): 88-93. (LIN Xiao-song, GUO Yue. A study on coupling relation between landslide and rainfall[J]. Journal of Catastrophology, 2001(2): 88-93. (in Chinese))
    [4] 戚国庆. 降雨诱发滑坡机理及其评价方法研究[D]. 成都:成都理工大学, 2004. (QI Guo-qing. Study on the mechanism of rainfall-induced landslide and its evaluating method[D]. Chengdu: Chengdu University of Technology, 2004. (in Chinese))
    [5] IADANZA C, TRIGILA A, NAPOLITANO F. Identification and characterization of rainfall events responsible for triggering of debris flows and shallow landslides[J]. Journal of Hydrology, 2016.
    [6] PARONUZZI P, RIGO E, BOLLA A. Influence of filling-drawdown cycles of the Vajont reservoir on Mt Toc slope stability[J]. Geomorphology, 2013, 191: 75-93.
    [7] ZANGERL C, EBERHARDT E, PERZLMAIER S. Kinematic behaviour and velocity characteristics of a complex deep-seated crystalline rockslide system in relation to its interaction with a dam reservoir[J]. Engineering Geology, 2010, 112(1/2/3/4): 53-67.
    [8] 朱 伟, 程南军, 陈学东, 等. 浅谈非饱和渗流的几个基本问题[J]. 岩土工程学报, 2006, 28(2): 235-240. (ZHU Wei, CHENG Nan-jun, CHEN Xue-dong, et al. Some fundamental problems of unsaturated seepage[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(2): 235-240. (in Chinese))
    [9] 赵 娜, 张 琪, 左永振. 天台乡滑坡降雨启滑机制研究[J]. 中国水运(理论版), 2007, 11: 95-96. (ZHAO Na, ZHANG Qi, ZUO Yong-zhen. Study on the failure mechanism of Tiantaixiang landslide induced by rainfall[J]. China Water Transport, 2007, 11: 95-96. (in Chinese))
    [10] 李增涛. 极端降雨型滑坡的加载位移耦合预测参数及灾变动力预测判据研究[D]. 青岛: 青岛理工大学, 2013. (LEE Zeng-tao. Study on the load-displacement coupled prediction parameters and catastrophic dynamic prediction criterion of the landslides induced by extreme rainfall[D]. Qingdao: Qingdao Technological University, 2013. (in Chinese))
    [11] 吴仁铣. 降雨诱发的滑坡作用机制研究[D]. 长沙: 中南大学, 2013. (WU Ren-xian. Research on landslides mechanism induced by rainfall[D]. Changsha: Central South University, 2013. (in Chinese))
    [12] 左自波. 降雨诱发堆积体滑坡室内模型试验研究[D]. 上海:上海交通大学, 2013. (ZUO Zi-bo. Investigation on rainfall-induced colluvium landslides using laboratory model tests[D]. Shanghai: Shanghai Jiao Tong University, 2013. (in Chinese))
    [13] 郑颖人, 唐晓松. 库水作用下的边(滑)坡稳定性分析[J]. 岩土工程学报, 2007, 29(8): 1115-1121. (ZHENG Ying-ren, TANG Xiao-song, Stability analysis of slopes under drawdown condition of reservoirs[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(8): 1115-1121. (in Chinese))
    [14] 刘新喜, 夏元友, 练 操, 等. 库水位骤降时的滑坡稳定性评价方法研究[J]. 岩土力学, 2005(9): 1427-1431, 1436. (LIU Xin-xi, XIA Yuan-you, LIAN Cao, et al. Research on method of landslide stability valuation during sudden drawdown of reservoir level[J]. Rock and Soil Mechanics, 2005(9): 1427-1431, 1436. (in Chinese))
    [15] 魏进兵. 水位涨落诱发水库滑坡的机制研究[D]. 武汉: 中国科学院研究生院(武汉岩土力学研究所), 2006. (WEI Jin-bing. Effects of reservoir level fluctuations on reactivation of landslide in reservoir area[D]. Wuhan: Chinese Academy of Science (Institute of Rock and Soil Mechanics), 2006. (in Chinese))
    [16] 徐文杰, 王立朝, 胡瑞林. 库水位升降作用下大型土石混合体边坡流-固耦合特性及其稳定性分析[J]. 岩石力学与工程学报, 2009(7): 1491-1498. (XU Wen-jie, WANG Li-chao, HU Rui-lin. Fluid-solid coupling characteristics and stability analysis of soil-rock mixture slope in rising and drawdown of reservoir water levels[J]. Chinese Journal of Geotechnical Engineering, 2009(7): 1491-1498. (in Chinese))
    [17] 潘书华. 三峡库区典型堆积层滑坡复活与库水位波动关系研究[D]. 北京: 中国地质大学, 2013. (PAN Shu-hua. Research on relationship between reservoir water level fluctuation and reactivation of typical accumulation landslides in Three Gorges Reservoir Area[D]. Beijing: China University of Geosciences, 2013. (in Chinese))
    [18] 卢应发, 黄学斌, 刘德富. 边坡稳定分析条块力-位移法及其应用[J]. 岩土力学, 2015, 36(10): 2787-2798. (LU Ying-fa, HUANG Xue-bin, LIU De-fu. Slice block force-displacement method of slope stability analysis and its application[J]. Rock and Soil Mechanics, 2015, 36(10): 2787-2798. (in Chinese))
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出版历程
  • 收稿日期:  2016-09-12
  • 发布日期:  2017-12-24

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