岩质边坡倾倒破坏模式与机理分析  

Analysis on Mode and Mechanism of Toppling Failure for Rock Slopes

作　　者：安晓凡 巨广宏 李宁[3] AN Xiaofan;JU Guanghong;LI Ning(PowerChina Northwest Engineering Corporation Limited, Xi'an 710065,China;Postdoctoral Workstation of Powerchina Northwest Engineering Corporation Limited,Xi'an 710065,China;Institute of Geotechnical Engineering, Xi'an University of Technology, Xi'an 710048,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]中国电建集团西北勘测设计研究院有限公司博士后科研工作站,西安710065 [3]西安理工大学岩土工程研究所,西安710048

出　　处：《西北水电》2022年第1期10-21,共12页Northwest Hydropower

基　　金：国家自然科学基金(52179111,51779207).

摘　　要：通过对国内外已报道的近80个倾倒边坡实例进行统计,从岩体几何形态、工程地质特征和失稳诱因3个方面分析归纳了边坡倾倒的变形演化规律和破坏特征。以地质力学分析模型建立为出发点,提出了一种更为全面的边坡倾倒分类系统;并结合典型倾倒边坡实例,从工程地质的角度阐述了各失稳模式的演化特性和机理。新的分类系统拓宽了边坡倾倒破坏的研究范围,为此类边坡稳定性的量化分析夯实了地质基础。Through the statistics of nearly 80 cases of toppling slopes that have been reported at home and abroad,the deformation law and failure characteristics of toppling mass are analyzed from three aspects:rock mass geometry,engineering geology and instability inducements.Furthermore,a comprehensive classification system for slope toppling is proposed based on the establishment of geomechanical models.Finally,combined with examples of typical toppling slopes,the evolution features and mechanisms of each failure mode are expounded from the perspective of engineering geology.The new classification broadens the research scope of rock toppling and lays a solid geological foundation for the quantitative analysis of such slopes.

关 键 词：岩质边坡 倾倒 稳定性 破坏模式 

分 类 号：P642[天文地球—工程地质学]