摘要
干燥非胶结土的边坡浅层稳定性容易受到降雨的影响,因此使用摩尔-库伦破坏准则评估浅层边坡稳定性是不安全的。本文使用修正幂函数建立了一种适用于干燥非胶结土的边坡破坏准则,通过直剪试验与三轴压缩试验验证了该准则的有效性,同时该准则的相关参数可通过直剪或三轴压缩试验获得。此外,根据新的安全系数计算方法与降雨入渗试验的观测结果,提出了应对潜在的浅层边坡破坏风险的方法—在雨季来临前将干燥边坡饱和至先前干燥层深度。
The shallow stability of slopes consisting of dry,uncemented soils is highly vulnerable to rainfall effects;thus,the application of the Mohr-Coulomb failure criterion for assessing shallow slope stability is deemed unsafe.In this study,a modified power function is employed to establish a slope failure criterion ap-plicable to dry,uncemented soils.The validity of the proposed criterion is verified through direct shear tests and triaxial compression tests,with its relevant parameters being obtainable via either direct shear tests or triaxial compression tests.Furthermore,based on the new safety factor calculation method and the observa-tional results of rainfall infiltration tests,this paper puts forward a method to address the potential risk of shallow slope failure,namely saturating the dry slope to the depth of the previously dry layer prior to the on-set of the rainy season.
作者
于涛
于腾飞
YU Tao;YU Tengfei(Zhejiang Zhongshui Engineering Technology Co.,Ltd.,Hangzhou 310000,Zhejiang,China;College of Construction Engineering,Jilin University,Changchun 130061,Jilin,China)
出处
《矿产与地质》
2025年第4期872-878,共7页
Mineral Resources and Geology
关键词
破坏准则
降雨
抗剪强度
边坡浅层稳定
雨水入渗
failure criterion
rainfall
shear strength
shallow slope stability
rainwater infiltration
作者简介
第一作者:于涛(1990-),男,国家注册岩土工程师,本科,主要从事工程地质勘察,岩土工程方面的研究。E-mail:15143084262@163.com。
