广东某高速公路路堑边坡滑坡灾变过程及工程对策  

Landslide and Deformation Process of a Cut Slope of an Expressway in Guangdong Province and Countermeasures

作　　者：彭浩然 廖小平 PENG Hao-ran;LIAO Xiao-ping(China Railway First Survey and Design Institute Group Co.Ltd.,Xi’an 710043,China;China Railway Academy Co.Ltd.,Chengdu 610036,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,西安市710043 [2]中铁科学研究院有限公司,成都市610036

出　　处：《公路》2023年第3期1-7,共7页Highway

基　　金：国家重点研发计划项目,项目编号2018YFC1504901;广东省交通集团科技项目,项目编号JG2021-1131。

摘　　要：为客观分析路堑边坡滑坡的变形破坏机制,定量评价其防治措施的工程效果,基于数值模拟分析与现场宏观迹象调查评估相结合的方式,以广东怀阳高速TJ1标K4+905~K5+080段左侧路堑边坡滑坡为研究对象,反演了该路堑边坡开挖失稳产生滑坡的灾变全过程,剖析了其防护加固工程失效的根本原因,揭示了其历次滑动破坏的灾变机理。最后,提出了该段路堑边坡滑坡的根治工程对策,并评估分析了其整治工程效果。In order to objectively analyze the landslide deformation and failure mechanisms of cut slopes and quantitatively evaluate the effectiveness of deformation control and prevention measures,landslide deformation evolution process of the cut slope on the left side of section K4+905–K5+080,Contract Section TJ1of the Huaiji-Yangjiang Expressway is analyzed by means of numerical simulations and field surveys of micro phenomena.Based on the combination of numerical simulation analysis and onsite macro-indication investigation and evaluation,the whole catastrophic process of landslide caused by excavation instability of the cut slope is inverted.The root cause of the failure of the previous protection and reinforcement measures are further analyzed,and the deformation mechanisms of the landslide events are revealed.Finally,measures intended to eradicate the root cause of the landslide deformation are proposed following the principle of“from root cause to control landslide,”and their effectiveness is evaluated.

关 键 词：高速公路 路堑边坡 滑坡 灾变机理 数值模拟 工程对策 

分 类 号：U416.1[交通运输工程—道路与铁道工程] P642.22[天文地球—工程地质学]