摘要
滑坡稳定性评价方法目前主要有极限平衡法、概率分析方法和有限元法,但是这些方法都仅从力学的角度出发,而很少从滑坡的实际变形角度来考虑。为此,在运用Morgenstern-Price法、蒙特卡洛-破坏概率方法和强度折减法从二维和三维的角度计算滑坡稳定性系数和破坏概率的基础上,提出了考虑滑坡位移监测的R/S分析方法对滑坡稳定性进行综合评价。以三峡库区青龙咀滑坡为例,采用上述四种方法对该滑坡稳定性进行综合评价。结果表明,该滑坡在计算工况条件下处于稳定状态,其危险性为中等。
Evaluation methods on landslide stability at present mainly include limit equilibrium method,probability analysis method and finite element method,which are all based on just mechanics nor actual deformation of landslide.Therefore,by using Morgenstern-Price method,Monte Carlo failure probability method and strength reduction method,from the 2-d and 3-d direction,based on which stability coefficient and failure probability are calculated,R/S analysis method considering the displacement monitoring of landslides is suggested to comprehensively assess the landslide stability.A case study on Qin Longzui landslide in the Three Gorges reservoir area is conducted by using the 4 methods mentioned above,and results show that the landslide is in a stable state and its risk is of medium on the condition of calculation cases.
出处
《灾害学》
CSCD
北大核心
2013年第1期50-53,共4页
Journal of Catastrophology
基金
国家自然科学基金项目(41002103
41101515)
中央高校基本科研业务费专项资金优秀青年教师基金(CUGL100213)
关键词
Morgenstern-Price法
蒙特卡洛-破坏概率方法
强度折减法
R
S分析方法
滑坡稳定性综合评价
三峡青龙咀滑坡
Morgenstern-Price method
Monte Carlo failure probability method
strength reduction method
R/S analysis method
comprehensive assessment on landslide stability
Qin Longzui landslide in the Three Gorges reservoir area
