路基工程Issue(6)：52-58,7.DOI:10.13379/j.issn.1003-8825.202303060
风化作用下煤系土边坡稳定性分析及失稳机理研究
Stability Analysis of Coal Measure Soil Slope and Its Instability Mechanism Study under the Action of Weathering
摘要
Abstract
To study the mechanism of shallow landslide along coal measure soil slope under the action of weathering,Plaxis 3D finite element software was used to calculate the stability of coal measure soil slope at different weathering times.First,to determine the physical and mechanical indexes of coal measure soil at different depths and different weathering times;second,to stratify the coal measure soil slope finely and establish the calculation model;last,to calculate the deformation of coal measure soil slope at different weathering times and the slope stability by use of Plaxis 3D finite element software,and analyze the mechanism of shallow landslide.The result shows that,under the action of weathering,it is prone to gradually decreased strength of coal measure strata in a certain depth range,even instability of shallow strata;where the depth of weathering action is about 6 m,shallow landslide will cause the deep rock and soil mass to lose strength protection and the deep slope stability will deteriorate even further.Therefore,in the design and construction of coal measure soil slope,it shall pay attention to reinforcement and protection of the slope surface so as to prevent the slope from continuous weathering.关键词
煤系土/风化作用/有限元/边坡稳定性/滑坡机理Key words
coal measure soil/weathering/finite element/slope stability/landslide mechanism分类
交通工程引用本文复制引用
单浩,李政远,尹杰,宋雪娟..风化作用下煤系土边坡稳定性分析及失稳机理研究[J].路基工程,2023,(6):52-58,7.基金项目
国家自然科学基金青年基金项目:煤系致密砂岩润湿性对沉积及成岩微相的响应及受控机理(42002193) （42002193）
