基于均匀设计的边坡敏感性灰色关联分析  

Uniform Design-based Gray Relationship Matrix Analysis on Sensitivity of Slope Stability

作　　者：陈高峰 卢应发[2] 陈龙 张建军 

机构地区：[1]珠江水利委员会珠江水利科学研究院,广东广州510611 [2]三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌443002

出　　处：《水力发电》2010年第4期20-22,共3页Water Power

基　　金：国家自然科学基金项目(50779030);国家自然科学基金项目(90815018)

摘　　要：传统的敏感性分析方法试验次数多,不能够反映边坡破坏的非线性规律。采用均匀设计对边坡稳定性进行数值试验,用灰色关联模型对试验结果进行数据处理,可以减少试验次数,并能用非线性的数据评价模型来分析试验数据。以一均质土坡为例,选取容重、内摩擦角、粘聚力、坡角、地震加速度等5个因素进行数值试验和灰色关联分析。结果表明,在抗震设防烈度为7度以下的均质土坡或松散堆积体岩土质边坡中,各因素对稳定性的关联度大小依次为粘聚力、内摩擦角、地震加速度、重度以及坡角。The traditional sensitivity analysis on slope stability need a large number of test,and can not reflect the laws of slope non-linear destruction.After using uniform design for slope stability numerical experiment and using gray relationship model for data processing,the experiment number can be reduced and the data can be analyzed by non-linear assessment model.As a case study,the stability of a homogeneous soil slope was analyzed after selecting bulk density,internal friction angle,cohesion,slope angle and seismic acceleration as influence factors.The results show that the magnitude of correlation degree to stability of five factors is decreased from cohesion,internal friction angle,seismic acceleration,bulk density to slope angle when the earthquake intensity is below 7 degree.

关 键 词：灰色关联分析 均匀设计 边坡稳定性 敏感性分析 

分 类 号：O242[理学—计算数学] TU413.6[理学—数学]