川九路沿线震后地质灾害及工程防护结构调查  

Investigation on post-earthquake geological disasters and engineering protection structure damage along Chuanjiu Road

作　　者：向波 李朝阳 Xiang Bo;Li Chaoyang(Sichuan Highway Planning,Survey and Design Research Institute Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]四川省公路规划勘察设计研究院有限公司,四川成都610041

出　　处：《山西建筑》2022年第18期1-3,16,共4页Shanxi Architecture

基　　金：国家重点研发计划(2017YFC0504901);四川省交通运输科技项目(2021-ZD1-019)。

摘　　要：线路工程是山区人民生活的重要保障,通过现场调查识别川九路震后沿线滑坡、泥石流分布,评价了川九线沿线的各类支护结构,对其工作状态、防护类型及损毁程度进行综合评定。调查发现地震灾害后,出现了大量因降雨导致的工程防护结构的损毁,给川九路安全运营带来了极大的挑战。季节性的降雨给灾区带来了两方面的影响:一方面地震造成了岩土体的破碎,雨季的降水使得滑坡、泥石流等灾害频发;另一方面挡土结构的损毁模式有:挡墙失稳破坏、挡土墙侧向位移破坏、落石砸坏挡土墙。结果可以为山区公路工程防护结构设计提供依据。The line project is an important guarantee for the life of the mountain people.Through field investigation,the distribution of landslides and debris flows along Chuanjiu Road after earthquake was identified,various support structures along Chuanjiu Road were evaluated,and their working conditions,protection types and damage degrees were comprehensively evaluated.The investigation found that after the earthquake disaster,a large number of rain-induced damage to the protective structure of the project has brought great challenges to the safe operation of Chuanjiu Road.Seasonal rainfall has brought two aspects of impact to the disaster area:on the one hand,the earthquake caused the rock and soil collapse,the rainy season precipitation makes landslides,debris flow and other disasters frequent;on the other hand,the damage modes of the retaining structure include:failure of the retaining wall,lateral displacement failure of the retaining wall,and damage to the retaining wall by falling rocks.The results can provide a basis for the design of the protective structure of mountain road engineering.

关 键 词：地震 降雨 地质灾害 防护结构 

分 类 号：TU473.3[建筑科学—结构工程]