基于正交设计的土坡稳定影响因素敏感性分析  

Sensitive Analysis of Factors Affecting Soil Slope Stability Using Orthogonal Design Method

作　　者：刘涛[1,2] 王俊杰[1,2] 

机构地区：[1]重庆交通大学水利水运工程教育部重点实验室,重庆400074 [2]重庆交通大学河海学院．重庆400074

出　　处：《水电能源科学》2010年第3期88-90,107,共4页Water Resources and Power

基　　金：重庆市自然科学基金资助项目(CSTC2009BA6001);省部共建水利水运工程教育部重点实验室开放基金资助项目(SLK2007A02)

摘　　要：以西昌昔格达组地层边坡为例,采用正交设计和方差分析研究了土体参数、坡面结构及地质结构对土坡稳定性影响的敏感性,通过比较同一因素在不同水平下计算获得的试验指标平均值,分析了显著影响边坡稳定因素的敏感性。结果表明,土体参数和坡面结构对土坡稳定性影响显著;土体重度减小、抗剪强度指标提高、坡度变缓、马道变宽、单级坡高变小等均使土坡趋于稳定。Taking the strata slope of Xigeda in Xichang for an example, the effects of soil mass parameters, slope structure and the geology properties on the sensitivity of soil slope stability is studied by using the orthogonal design and variance analysis. The sensitivity of severaI factors affecting the stability of soil slope is analyzed by comparing the average results of each factor under different levels. The results indicate that soil mass parameters and the slope surface characteristics affect the stability of soil slope significantly. The stability of the soil slope is increasing with decreasing any of unit weight of soil mass, grade radio and height of the slope, or increasing any of shear strength of soil mass and wide of slope berm.

关 键 词：正交设计 土坡稳定性 影响因素 敏感性分析 方差分析 

分 类 号：TU457[建筑科学—岩土工程] P642.22[建筑科学—土工工程]