基于正交设计的滑坡敏感性分析

英文篇名：Sensitivity Analysis of Landslide Based on Orthogonal Design
中文刊名：铁道标准设计
英文刊名：Railway Standard Design
作者：张万涛
英文作者：Zhang Wantao (The Third Railway Survey and Design Institute Group Corporation ; Tianjin 300142)
中文关键词：滑坡 ; 敏感性分析 ; 正交设计 ; 极差分析 ; 方差分析
英文关键词：Landslide ; Sensitivity analysis ; Orthogonal design ; Range analysis ; Variance analysis
出版日期：2011-10-24
机构：铁道第三勘察设计院集团有限公司地质路基设计处;
年：2011
期：10
出版单位：铁道标准设计

摘要

滑坡的稳定性受诸多内外因素的影响,通过敏感性分析,可以对滑坡稳定影响因素的敏感性进行排序并检验其显著性。在简要介绍正交设计原理的基础上,结合下土地岭滑坡工程实例,选取了5个影响因素进行敏感性分析。极差分析及方差分析结果表明,敏感性由大到小依次为:滑带土内摩擦角φ、滑带土黏聚力C、滑坡地下水位H、地震加速度系数α、滑坡体容重γ。其中,前四者是该滑坡的高度显著影响因素,滑坡体容重γ对该滑坡无显著性影响。
The stability of landslide is influenced by many factors.The sensitivity of influencing factors on landslide stability can be classified and their significances can be tested through sensitivity analysis.Taking Xiatudiling landslide for example,five influence factors were chosen and sensitivity analysis was performed based on the brief introduction to the orthogonal design theory.The results of the range analysis and variance analysis indicated that the sequence of the sensitivity from big to small is: internal frictional angle of slip soil φ,cohesion of slip soil c,groundwater level of landslide H,earthquake acceleration coefficient α,bulk density of landslide body γ,among which the first four are highly significant factors and bulk density of landslide body has no remarkable effect on landslide stability.

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