降雨情况下土质高边坡稳定性影响因素敏感性分析  

Sensitivity analysis of factors affecting stability of high soil slope under rainfall condition

作　　者：叶君 王健 杨宗仁 马东良 Ye Jun;Wang Jian;Yang Zongren;Ma Dongliang(Zhejiang Communication Group Co.,Ltd.,Hangzhou Zhejiang 310051,China)

机构地区：[1]浙江交工集团股份有限公司,浙江杭州310051

出　　处：《山西建筑》2024年第17期49-52,共4页Shanxi Architecture

基　　金：浙江交工集团股份有限公司2023年度第三批科技项目计划:基于3D建模技术对山区高速公路土质高边坡雨季施工稳定性分析及质量控制(项目编号:JGYF-2023-121)。

摘　　要：在高速公路的建设过程当中,常遇见各类岩性的高边坡,且高边坡的稳定性受到极其复杂的因素影响,其中降雨是影响边坡稳定性的最重要因素,依托实际工程项目,通过室内的土工试验和利用灰色理论进行土质高边坡的敏感性参数的分析。研究表明,土体土样含水率与其黏聚力、内摩擦角成负相关关系,其中黏聚力较内摩擦角对土体的含水率变化较为敏感。灰色关联分析方法通过评估影响因素的相关性排序为:c′>φ′>L>R>H>β>γ>k;降雨条件下边坡的稳定性主要受到边坡土体本身的物理力学特性、边坡的形状条件以及降雨的影响,其中土体的物理力学特性对边坡的影响最大。In the process of highway construction,high slopes of various lithologies are often encountered,and the stability of high slopes is affected by extremely complex factors,among which rainfall is the most important factor affecting the stability of slopes.This paper relies on actual engineering projects,and analyzes the sensitivity parameters of high soil slopes through indoor geotechnical tests and the use of gray theory.The results show that with the increase of water content,the cohesion and internal friction angle of soil mass both show a decreasing trend,in which the cohesion decreases significantly,but the internal friction angle changes relatively little.The correlation order of influencing factors is as follows:c′>φ′>L>R>H>β>γ>k;The stability of the slope under the condition of rainfall is mainly affected by the physical and mechanical characteristics of the slope soil itself,the shape condition of the slope and the rainfall,among which the physical and mechanical characteristics of the soil have the greatest influence on the slope.

关 键 词：降雨 高边坡 灰色关联 稳定性 

分 类 号：TU413.62[建筑科学—岩土工程]