基于岩土水理性的寒区路基边坡稳定性分析
摘要:通过研究岩土体的水理性质分析寒区路基边坡的稳定性。寒区边坡路基的稳定性主要受水与温度的耦合作用影响,即冻融循环和融化过程。岩质边坡主要受冻融循环作用导致冻融损伤,使其强度降低,产生失稳;土质边坡由于水的相态变化,导致土体软化、胀缩,其黏聚力、内摩擦角以及强度降低,其边坡稳定性系数与融化深度和融化层饱和度密切相关。
Abstract:The stability of subgrade slopes in cold regions is analyzed based on the water-physical properties of rock and soil. The stability of the subgrade in the cold area is mainly affected by the coupling effect of water and temperature, that is, the freeze-thaw cycle and the thawing process. The rock slope is mainly affected by freeze-thaw cycles, which causes freeze-thaw damage, reduces its strength and causes instability. Due to the change of the water phase, the soil slope softens and swell-shrink, accordingly its cohesion, internal friction angle and strength decrease. Its slope stability coefficient is closely related to the melting depth and the saturation of the melting layer.
中文标题:
基于岩土水理性的寒区路基边坡稳定性分析
Analysis of Subgrade Slope Stability in Cold Region Based on Rock and Soil Water-physical Properties
作者:
王国爱1,曹君2,杜耀辉3,,
Wang Guoai1,Cao Jun2,Du Yaohui3,,
作者简介:王国爱,男,1977年生,甘肃人,大学本科,高级工程师,主要从事土木工程方向研究。E-mail:3028426274@qq.com通讯作者:杜耀辉,男,1981年生,甘肃榆中人,博士,副教授,主要从事岩土隧道方向研究。E-mail:3079595456@qq.com
通讯地址:
1. 定西市交通工程质量监督站, 甘肃定西 743000; 2. 中铁七局集团路桥工程有限公司, 陕西宝鸡 721000; 3. 兰州交通大学, 甘肃兰州 730070
1.DingxiTrafficEngineeringQualitySupervisionStation,Dingxi743000,Gansu,China; 2.ChinaRailwaySeventhBureauGroupRoadandBridgeEngineeringCo.,Ltd.,Baoji721000,Shaanxi,China; 3.LanzhouJiaotongUniversity,Lanzhou730070,Gansu,China
中图分类号:TU413.6+2
doi:10.3969/j.issn.1007-2993.2021.03.007
出版物:岩土工程技术
收稿日期:2020-04-30
网络出版日期:2021-11-12
关键词:寒区,路基工程,边坡稳定性,水理性质
Key words:cold area,subgrade engineering,slope stability,water physical properties
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