正交设计在含砂层边坡敏感性分析中的应用  

Application of Orthogonal Design in Sensitivity Analysis of Sand-containing Slope

作　　者：马飞跃[1] 余金煌[1] 李巍[1] 曹彭强[1] 

机构地区：[1]安徽省.水利部淮委水利科学研究院,安徽合肥230088

出　　处：《水利与建筑工程学报》2017年第4期199-201,共3页Journal of Water Resources and Architectural Engineering

摘　　要：由于边坡稳定性受内外多因素的影响,为了更全面分析各因素的变异性对边坡稳定的影响,采用多因素正交设计方法,对影响某堤防边坡稳定性的多因素进行了敏感性分析,并首次尝试选择是否有含砂层作为敏感因素之一。用极差法和方差法对其结果进行分析,各因素对边坡稳定性影响程度由高到低顺序为黏聚力、内摩擦角、水位、含砂层、重度。坡脚的含砂层对边坡稳定性有一定的影响,影响程度低于水位。The stability of a slope is affected by multiple internal and external factors,so it is significant to make a comprehensive analysis on the influence of the change of each factor on the stability of the slope. The multi-factor orthogonal design method is adopted to analyze the sensitivity of the factors affecting the stability of an embankment slope. Moreover,containing sand or not is considered as one of the factors of sensitivity for the first time in this paper. Based on the range and variance analysis,the result shows that the influence of each factor on the stability of the slope is cohesion,angle of internal friction,water level,sand-containing layer and unit weight in sequence.The sand-containing layer at the foot of the slope has certain impacts on the stability of the slope with the impact level lower than that of the water level.

关 键 词：正交设计 敏感性分析 含砂层 黏聚力 边坡稳定性 

分 类 号：TV871[水利工程—水利水电工程]