| 陕西山阳特大型滑坡视向滑移-溃屈破坏力学分析 |
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| 引用本文： | 王佳运,王根龙,石小亚.陕西山阳特大型滑坡视向滑移-溃屈破坏力学分析[J].中国地质,2019,46(2):381-388. |
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| 作者姓名： | 王佳运 王根龙 石小亚 |
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| 作者单位： | 自然资源部黄土地质灾害重点实验室;中国地质调查局西安地质调查中心 |
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| 基金项目： | 中国地质调查局项目（121201011000150018、DD20190642）资助。 |
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| 摘 要： | 陕西山阳滑坡为典型的陡倾层状斜向岩质斜坡,其破坏模式不同于常见的顺倾层状岩质斜坡溃屈破坏模式,也不同于斜倾层状山体的视向滑移-剪切破坏模式,更不同于陡倾顺层岩质斜坡的倾倒、倾倒-滑移破坏模式,属于视向滑移-溃屈破坏模式。在实地调查的基础上,从斜坡结构特征、结构面组合特征以及剪出口特征分析了滑坡的破坏模式,进而分析了山阳滑坡的视向滑移-溃屈破坏机制;以梁板理论、层状板裂结构岩体弯曲-溃屈破坏的力学模型为基础,结合斜倾层状岩质滑坡的视向滑动机制研究,建立了基于斜坡自重、地下水静水压力、侧向摩阻力以及斜坡岩体厚度变化作用下的陡倾层状斜向岩质斜坡视向滑移-溃屈破坏力学模型,进行力学分析,推导了溃屈段长度条件方程,并以山阳滑坡为例验证了长度条件方程的正确性。
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| 关 键 词： | 陡倾层状斜向岩质斜坡 视向滑移-溃屈破坏模式 破坏机制 侧向摩阻力 条件方程 |
| 收稿时间： | 2018/1/19 0:00:00 |
| 修稿时间： | 2019/3/15 0:00:00 |
Mechanical analysis of apparent dip creep-buckling failure of Shanyang Super large-scale rockslide in Shaanxi Province |
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| WANG Jiayun,WANG Genlong and SHI Xiaoya.Mechanical analysis of apparent dip creep-buckling failure of Shanyang Super large-scale rockslide in Shaanxi Province[J].Chinese Geology,2019,46(2):381-388. |
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| Authors: | WANG Jiayun WANG Genlong and SHI Xiaoya |
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| Affiliation: | Key Laboratory for Geohazards in Loess Area, MNR, Xi''an, 710054, Shaanxi, China;Xi''an Center of China Geological Survey, Xi''an, 710054, Shaanxi, China,Key Laboratory for Geohazards in Loess Area, MNR, Xi''an, 710054, Shaanxi, China;Xi''an Center of China Geological Survey, Xi''an, 710054, Shaanxi, China and Xi''an Center of China Geological Survey, Xi''an, 710054, Shaanxi, China |
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| Abstract: | As a typical steep stratified oblique rock slope, Shanyang rockslide in Shaanxi Province is different from buckling failure of inclination-paralleled rockslide, apparent dip slide of inclined bedding rockslide and, what is more, toppling and sliding of steeply inclined rockslide,and belongs to the apparent dip creep-buckling. On the basis of field investigation and analysis of characteristics of structure planes, structure of sliding rockmass and shear outlet, the authors analyzed the failure mode in combination with the buckling mechanism. The authors established and analyzed the buckling mechanical model of steep stratified oblique rock slope under gravity, hydrostatic pressure of groundwater, lateral friction and rockmass depth of the rockslide according to the beam plate theory and mechanical model of bending-buckling failure of slab rent structure rockmass, as well as the condition equation of buckling length. The validity of the condition equation was verified. |
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| Keywords: | steep stratified oblique rock slope apparent dip creep-buckling failure mode failure mechanism lateral friction |
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