含软弱夹层路堑边坡滑塌原因分析  

Analysis of the Causes of Landslide of Road Cut Slopes with Weak Interlayers

作　　者：朱潇 ZHU Xiao(China Railway Fifth Survey and Design Institute Group Co.,Ltd.,Beijing 102600,China)

机构地区：[1]中铁第五勘察设计院集团有限公司,北京102600

出　　处：《价值工程》2025年第5期32-34,共3页Value Engineering

摘　　要：山区铁路的建设易形成高陡路堑边坡,路堑开挖改变了岩土体的形态和平衡条件,在施工期间由于不及时施作边坡防护措施,同时受到强降雨或其他外部环境的变化,边坡岩土体性质发生改变,边坡易沿软弱夹层发生滑动。本文以某山区铁路为例,结合现场调查情况和数值检算结果分析其发生多次牵引式滑动的原因,结果显示坡面排水不畅和集中强降雨导致边坡岩土体含水量增加,软弱夹层性质恶化,导致边坡发生滑塌。The construction of mountainous railways is prone to the formation of high and steep road cut slopes.The excavation of the road cut changes the shape and balance conditions of the rock and soil mass.During the construction period,due to the lack of timely slope protection measures,as well as heavy rainfall or other external environmental changes,the properties of the rock and soil mass of the slope change,and the slope is prone to sliding along weak interlayers.This article takes a railway in a mountainous area as an example,and analyzes the reasons for multiple traction sliding based on on-site investigation and numerical calculation results.The results show that poor drainage on the slope and concentrated heavy rainfall increase the moisture content of the slope rock and soil,deteriorate the properties of the weak interlayer,and lead to slope collapse.

关 键 词：山区铁路 路堑边坡 软弱夹层 边坡滑塌 

分 类 号：U418.55[交通运输工程—道路与铁道工程]