摘要
论文以云南省昌宁县河西水库滑坡为例,采用ANSYS有限元软件建立下覆基岩断层边坡模型,基于有限元强度折减法开展不同断层类型和断层倾角对边坡稳定性的影响研究。结果表明:当边坡为下覆平移断层时,随断层倾角的逐渐增大,边坡稳定安全系数呈现出先增大后减小的趋势,而断层在坡体中所处位置对其影响作用不明显;相比之下,正断层和逆断层对滑坡的孕育分别具有抑制和促进作用,研究可为边坡稳定性分析和滑坡的防治提供理论参考依据。
Taking the landslide of Hexi Reservoir in Changning County,Yunnan Province as an example,the paper uses ANSYS fi⁃nite element software to establish the underlying bedrock fault slope model.Based on the finite element strength reduction method,the effect of different fault types and fault dip angle on the slope stability is studied.The results show that when the slope is an over⁃lying translational fault,with the gradual increase of the fault dip angle,the slope safety factor shows a trend of increasing first and then decreasing,but the location of the fault in the slope body has no effect on it Obviously;by contrast,normal faults and reverse faults have inhibitory and promotion effects on the landslide breeding respectively.The study can provide a theoretical basis for slope stability analysis and landslide prevention and control。
作者
窦思军
徐兴倩
李继国
和春香
焦萱
DOU Si-jun;XU Xing-qian;LI Ji-guo;HE Chun-xiang;JIAO Xuan(Yunnan Agricultural University,Kunming 650201,China;Yunnan Vocational College of Water Conservancy and Hydro-power,Kunming 650201,China)
出处
《河北地质大学学报》
2020年第3期45-50,共6页
Journal of Hebei Geo University
基金
国家自然科学基金(41867040)
云南省青年基金项目(2016FD030)
国家级大学生创新创业训练项目(201810676020)。
关键词
有限元
强度折减法
断层
边坡稳定性
finite element
intensity reduction
fault
slope stability
