Orthogonal Analysis of Sensitivity of Mechanical Parameters of Slope Rock Mass to Parameters in Hoek-Brown Criterion
详细信息
- 责任者：Xu Fei (Engineering Faculty ; China University of Geosciences ; Wuhan 430074 ; China) ; Hu Xiuwen
- 刊名：Journal of Engineering Geology
- 出版年：2013
- 卷期：21(4)
- 关键词：边坡稳定性 ; slope stability ; 岩体力学 ; rock mechanics
- 页码：p.613-618
- 图表：5 tables, 15 refs.
- 分类号：1702
- issnNo：ISSN1004-9665
- isbnNo：CN11-3249/P
摘要
This paper examines the effects of parameters in the generalized Hoek-Brown failure criterion on the mechanical parameters of slope rock mass using orthogonal test method.It gives a comprehensive analysis of various factors and effectively explains the limitation of single-factor method.Sensibility analysis of the criterion parameters based on the orthogonal test is done within the slope of 5 # abutment in Longqiao Extra-large Bridge.It is found that the Geological Strength Index(GSI) influences the rock mass deformation parameter E m significantly,and the compressive strength σ ci and disturbance factor of rock mass D have greater impact on the rock mass strength parameters C、.In summary,the index GSI and σ ci are more sensitive to the mechanical parameters of rock mass comparing to disturbance factor of rock mass D,and then m i;There is no interaction between the criterion parameters,and they are relatively independent.