文献类型：期刊文献

中文题名：软硬互层岩质边坡变形滞流效应研究

英文题名：Study on hesitation effect of deformation in soft and hard alternated rock and soil slope

作者：吴骏 董海龙 张文利 王福举 张挣鑫

第一作者：吴骏

机构：[1]贵州理工学院交通工程学院,贵州贵阳550025

第一机构：贵州理工学院交通工程学院

年份：2025

卷号：51

期号：10

起止页码：125-128

中文期刊名：四川建材

外文期刊名：Sichuan Building Materials

基金：贵州省科学技术厅2022年度基础研究计划(自然科学)项目(黔科合基础-ZK〔2022〕一般169);2023年贵州理工学院高层次人才科研启动项目(2023GCC40);2023年贵州理工学院高层次人才科研启动项目(2023GCC43);2023年贵州理工学院高层次人才科研启动项目(2023GCC44);贵州省公路局科技项目(2023QLK01);贵州省水利科技经费项目(2023QLK01)。

语种：中文

中文关键词：软硬互层;岩质边坡;滞流效应;数值模拟

外文关键词：soft and hard interlayer;rock slope;stagnation effect;numerical simulation

摘要：实践经验表明,软硬互层岩质边坡的软夹层被上下硬质岩层挤压而向坡面塑性流动的强度随其厚度的增加而提升,由此提出“滞流效应”的概念。从软硬互层交界面处质点存在摩擦阻力和位移错动约束反力这一点出发,论述该效应的发生机理。通过有限元实例计算,揭示“滞流效应”的演变规律,剖析能够使特定工程地质边坡自稳的软夹层临界厚度,并推算了实例边坡的临界厚度为2.0~2.5 m。研究结果可为边坡变形的理论研究及工程实践提供借鉴。
The practical experience shows that the strength of plastic flow to the slope surface of the soft interlayer of the soft hard interbedded rock slope is squeezed by the upper and lower hard rock strata,and becomes stronger with the increase of its thickness.Therefore,the concept of“stagnation effect”is put forward.The mechanism of this effect is discussed from the point that there are friction resistance and displacement dislocation constraint reaction force at the interface between soft and hard layers.Through the finite element example calculation,the evolution law of“stagnation effect”is revealed,the critical thickness of a soft interlayer that can make a specific engineering geological slope self stable is analyzed,and the critical thickness of the example slope is calculated to be between 2.0 m and 2.5 m.The research results can provide reference for the theoretical research and engineering practice of slope deformation.