摘要
通过野外调查,研究了韩家山滑坡的基本发育特征,依据滑坡的变形破坏特点讨论了滑坡形成的影响因素及成因机理,并通过数值模拟对滑坡的稳定性进行了分析。结果表明:该滑坡是一老滑坡,1978年曾经发生重新活动,目前处于稳定状态,但安全储备不足。数值模拟结果认为在降雨强度80mm/24h,持续时间48h的条件下滑坡有可能发生整体失稳;在地震加速度达到0.10g和0.15g时滑坡发生整体滑移。
Through field investigation,we studied the basic developmental characteristics of Hanjiashan landslide,discussed the factors affecting the formation mechanism of the landslide,and analyzed the stability of landslide through numerical simulation.The result indicated that the landslide was an old one,and had slidden once again in 1978,and which is in stable condition currently,but the security reserves for this landslide zone is insufficient.The numerical results have shown that landslide is likely to be unstable as a whole under the rainfall intensity of 80mm/24h and the 48h duration; if the seismic acceleration reached from 0.10g to 0.15g,the landslide would occur overall slide.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2014年第10期169-175,共7页
Journal of Arid Land Resources and Environment
基金
青海湟水河流域大型滑坡成灾机理与防治技术研究(No.1212011220144)资助
关键词
韩家山滑坡
发育特征
成因机制
稳定性分析
Hanjiashan landslide
development characteristics
formation mechanism
stability analysis
