次摸地古滑坡运动特征反演分析

胡剑

胡剑. 2014: 次摸地古滑坡运动特征反演分析. 工程地质学报, 22(3): 361-365. doi: 10.13544/j.cnki.jeg.2014.03.002
引用本文: 胡剑. 2014: 次摸地古滑坡运动特征反演分析. 工程地质学报, 22(3): 361-365. doi: 10.13544/j.cnki.jeg.2014.03.002
HU Jian. 2014: INVERSION ANALYSIS ON CHARACTERISTICS OF CIMODI ANCIENT LANDSLIDE MOTION. JOURNAL OF ENGINEERING GEOLOGY, 22(3): 361-365. doi: 10.13544/j.cnki.jeg.2014.03.002
Citation: HU Jian. 2014: INVERSION ANALYSIS ON CHARACTERISTICS OF CIMODI ANCIENT LANDSLIDE MOTION. JOURNAL OF ENGINEERING GEOLOGY, 22(3): 361-365. doi: 10.13544/j.cnki.jeg.2014.03.002

次摸地古滑坡运动特征反演分析

doi: 10.13544/j.cnki.jeg.2014.03.002
详细信息
    作者简介:

    胡剑,男,硕士研究生,高级工程师,主要从事水工环地质及岩土工程勘察工作.Email:hujian168@263.net

  • 中图分类号: P642.22

INVERSION ANALYSIS ON CHARACTERISTICS OF CIMODI ANCIENT LANDSLIDE MOTION

  • 摘要: 以雅砻江次摸地古滑坡体为研究对象,经过现场地质调查,从地形地貌,地震记录及物质结构等地质条件对古滑坡的稳定性进行了宏观地质评价。认为在自然状态下古滑坡处于稳定状态,稳定性主要受控于引起初始滑动的基覆界面和体内潜滑面,同时,经过古滑坡前后形态变化的推演分析,根据能量法,滑坡运动学和谢德格尔假说,确定了4个关键的滑坡运动参数:滑坡半径r,等效坡度,综合动摩擦角和最大滑速Vmax 对应的后缘落差Hm。其中后缘落差Hm的取值分两种方法:(1)认为滑坡出现最大滑速Vmax 时后缘点停止运动,最大滑速Vmax 对应的Hm为滑动前后滑坡后缘点的垂直落距,(2)认为最大滑速Vmax 出现时后缘点和坡体会开始减速运动到静止,因此最大滑速Vmax 对应的Hm小于滑动前后滑坡后缘点的垂直落距,需要通过假设圆弧滑动面和滑坡运动学公式求出。最终本文推算出滑坡属于高速滑坡,最大滑速Vmax 在13.50~21.20ms-1 之间,并对古滑坡高速失稳的地质条件特征进行了分析。这对次摸地古滑坡附近工程地质背景相近的斜坡稳定性评价有一定借鉴意义。
  • [1] Cruden D M,Hungr O.The debris of the Frank slide and theories of mobility[J].Canadian Journal of Earth Sciences, 1986, 23 (3): 425~432.

    [2] Luzio E D, Biachi-Fasani G, Esposito C, et al.Massive rock-lope failure in the Central Apennines(Italy):The case of the Campodi Giove rock avalanche[J].Bulletin of Engineering Geology and the Environment, 2004, 63 (1): 1~12.

    [3] Evanssg, Scarasciamugnozzag, Strom A,et al.Landslides from Massive Rock Slope Failure[M].Berlin:Germany: Springer, 2006, 551~570.

    [4] 董孝壁, 王兰生.斜坡破坏后滑体的运动学研究[J].地质灾害与环境保护, 2000, 11 (1): 31~37.Dong Xiaobi, Wang Lansheng.Kinematic features of landslide after slope failure.Journal of Geological Hazards and Environment Preservation, 2000, 11 (1): 31~37.

    [5] 刘世凯.地质环境与工程[M].成都:四川科学技术出版社, 1996.Liu Shikai.Geological Environment and Engineering.Chengdu: Sichuan Science & Technology Press, 1996.

    [6] 严福章.水库滑坡复活机理及其发展趋势预测研究[D].北京:中国科学院地质与地球物理研究所, 2004.Yan Fuzhang.Study on the Mechanism of Reservoir-Induced Reaction of Landslides and Prediction of Its Development Tendency.Beijing: Institute of Geology and Geophysics, Chinese Academy of Sciences, 2004.

    [7] 严福章, 王思敬,徐瑞春.清江隔河岩水库蓄水后茅坪滑坡的变形机理及发展趋势研究[J].工程地质学报, 2003, 11 (1): 15~24.Yan Fuzhang, Wang Sijing, Xu Ruichun.Deformation mechanism and development tendency of Maoping landslide after impounding of Geheyan reservoir on Qingjiang river, Hubi province, China.Journal of Engineering Geology, 2003, 11 (1): 15~24.

    [8] 李仲春, 高尧基.刘家峡水库苏州崖坍滑体稳定性评价与决策.中国典型滑坡[M].北京:科学出版社, 1988, 256~266.Li Zhongchun, Gao Yaoji.Stability evaluation and decision—making on Suzhouya landslide of Liujiaxia reservoir.In: Typical Landslide in China.Beijing: Science Press, 1988, 256~266.

    [9] Evanssg, Degraffjv.Catastrophic Landslides: Effects Occurrence, and Mechanisms[M].Colorado: The Geological Society of America,Inc.,2002, 165~190.

    [10] Nicoletti, Pier G, Giorgio-Valvo M.Geomorphic Controls of the shape and mobility of rock avalanches[J].Geological Society of America Bulletin, 1991, 103 (10): 1365~1373.

    [11] 程谦恭, 张倬元,黄润秋.高速远程崩滑动力学的研究现状及发展趋势[J].山地学报, 2007, 25 (1): 72~84.Cheng Qiangong, Zhang Zhuoyuan, Huang Runqiu.Study on dynamics of rock avalanches: state of the art report.Journal of Mountain Science, 2007, 25 (1): 72~84.

    [12] 殷跃平.汶川八级地震滑坡高速远程特征分析[J].工程地质学报, 2009, 17 (2): 153~166.Yin Yueping.Rapid and long run-out features of landslides triggered by the Wenchuan earthquake.Journal of Engineering Geology, 2009, 17 (2): 153~166.

    [13] 苏生瑞, 张永双,李松,等.汶川地震引发高速远程滑坡运动机制数值模拟研究——以谢家店子滑坡为例[J].地球科学与环境学报, 2010, 32 (3): 277~287.Su Shengrui, Zhang Yongshuang, Li Song, et al.Numerical analysis of motion mechanism of highspeed and long run-out landslide by Wenchuan earthquake: Taking Xiejiadianzi landslide as an example.Journal of Earth Sciences and Environment, 2010, 32 (3): 277~287.
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出版历程
  • 收稿日期:  2013-04-15
  • 修回日期:  2014-03-14
  • 刊出日期:  2014-06-25

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