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陡倾层状斜向岩层视向溃屈机制力学分析——以陕西山阳滑坡为例

王佳运 石小亚

王佳运, 石小亚, 2018. 陡倾层状斜向岩层视向溃屈机制力学分析——以陕西山阳滑坡为例. 地质力学学报, 24 (4): 482-489. DOI: 10.12090/j.issn.1006-6616.2018.24.04.050
引用本文: 王佳运, 石小亚, 2018. 陡倾层状斜向岩层视向溃屈机制力学分析——以陕西山阳滑坡为例. 地质力学学报, 24 (4): 482-489. DOI: 10.12090/j.issn.1006-6616.2018.24.04.050
WANG Jiayun, SHI Xiaoya, 2018. MECHANICAL ANALYSIS OF APPARENT DIP BUCKLING MECHANISM OF STEEP STRATIFIED OBLIQUE ROCK: A CASE STUDY OF SHANYANG ROCKSLIDE IN SHAANXI PROVINCE. Journal of Geomechanics, 24 (4): 482-489. DOI: 10.12090/j.issn.1006-6616.2018.24.04.050
Citation: WANG Jiayun, SHI Xiaoya, 2018. MECHANICAL ANALYSIS OF APPARENT DIP BUCKLING MECHANISM OF STEEP STRATIFIED OBLIQUE ROCK: A CASE STUDY OF SHANYANG ROCKSLIDE IN SHAANXI PROVINCE. Journal of Geomechanics, 24 (4): 482-489. DOI: 10.12090/j.issn.1006-6616.2018.24.04.050

陡倾层状斜向岩层视向溃屈机制力学分析——以陕西山阳滑坡为例

doi: 10.12090/j.issn.1006-6616.2018.24.04.050
基金项目: 

国土资源大调查项目 121201011000150018

详细信息
    作者简介:

    王佳运(1978-), 男, 高级工程师, 主要从事地质灾害调查与研究工作。E-mail:wjy311_2000@sohu.com

  • 中图分类号: TU45;P642.22

MECHANICAL ANALYSIS OF APPARENT DIP BUCKLING MECHANISM OF STEEP STRATIFIED OBLIQUE ROCK: A CASE STUDY OF SHANYANG ROCKSLIDE IN SHAANXI PROVINCE

  • 摘要: 以陕西山阳滑坡为例,分析了陡倾层状斜向岩层岩质滑坡的视向滑动特征、滑移-溃屈破坏模式与机制。基于梁板理论、层状板裂结构岩体弯曲-溃屈破坏的力学模型在考虑自重、地下水静水压力作用及斜倾层状山体视向滑动侧向摩阻力作用的影响下,采用岩体结构力学分析的方法建立了相应的力学模型;经过力学分析,推导出基于斜坡自重、地下水静水压力与侧向摩阻力作用下的陡倾层状斜向岩层斜坡溃屈段长度条件方程。为验证条件方程的正确性,以山阳滑坡为例进行了验算,最后得出与实际调查较一致的结果,为防御陡倾层状斜向岩层斜坡产生视向溃屈破坏提供依据。

     

  • 图  1  山阳滑坡区地质构造略图

    Figure  1.  Geological structure sketch of Shanyang rockslide

    图  2  山阳滑坡剖面图

    Figure  2.  Profile of Shanyang rockslide

    图  3  滑坡结构(镜向240°)

    Figure  3.  Structure of sliding rockmass(lens direction 240°)

    图  4  滑动山体结构面赤平投影(上半球投影)

    Figure  4.  Groups of joints stereographic projection in the slide rockmass(Upper hemisphere projection)

    图  5  滑床表部的反坡阶步现象(镜向275°)

    Figure  5.  Antistep on surface of sliding bed(lens direction 275°)

    图  6  滑床表部的层间剪切泥化带(镜向215°)

    Figure  6.  Mudded shear zone in weak intercalation(lens direction 215°)

    图  7  滑坡滑动前后地形

    Figure  7.  Original slope and present terrain

    图  8  力学模型与微元受力分析

    Figure  8.  Mechanical model and force diagram of element

    图  9  真倾角方向边坡微元受力分析

    Figure  9.  Force diagram of element of slope in the true angle direction

    图  10  视倾角方向边坡西侧壁受力分析

    Figure  10.  Force diagram of element of the west side slope in the apparent dip angle direction

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出版历程
  • 收稿日期:  2018-01-24
  • 修回日期:  2018-03-27
  • 刊出日期:  2018-08-01

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