摘要
基于对四川泸定6.8级地震震区的沿线公路地质灾害调查,分析研究了震区公路网的受损特征及分布情况。通过对震区国省干道及县乡村道的调查,共发现公路灾害507处,类型以崩塌和滑坡为主,整体表现出数量大、规模小和成片分布的特点。灾害主要分布在大岗山电站库区附近的公路沿线,局部路段存在连续诱发多个崩塌及滑坡灾害群的现象,其中S217线是灾害分布最密集的路段。现场调查发现破坏表现形式以路基受损为主,破坏程度为中度以上的占路基破坏总数的67%,对桥梁和隧道等构筑物影响较小,桥梁及隧道基本上都能保证通行。通过与其他地震诱发的公路震害对比,总结了地形地貌因素对地震诱发公路震害的影响。研究结果有利于地方政府有针对性地开展震区公路沿线的防灾减灾工作。
Based on the investigation of highway geological disasters along the M s6.8 earthquake in Luding,Sichuan Province,the damage characteristics and distribution of highway network in the earthquake area were analyzed and studied.Through the investigation of the national and provincial trunk roads and county rural roads in the earthquake area,a total of 305 highway disasters were found.The types are mainly collapse and landslide,showing the characteristics of large quantity,small scale,and distributed in pieces.The disasters were mainly distributed along the highway near Dagangshan hydropower Station reservoir area,and some sections of the road were continuously inducing multiple collapse and landslide disaster groups,among which S217 line was the most densely distributed section.A total of 507 highway damage points were investigated,and it was found that the main form of damage was roadbed damage.The degree of damage was more than 67%of the total number of roadbed damage,which had little effect on bridges,tunnels and other structures.Bridges and tunnels can basically guarantee passage.By comparing with other earthquake-induced highway damage,the influence of topographic factors on earthquake-induced highway damage is summarized.The research results are helpful for local governments to carry out targeted disaster prevention and mitigation work along highways in earthquake areas.
作者
朱明
李杰
赵飞
徐益飞
李文华
ZHU Ming;LI Jie;ZHAO Fei;XU Yifei;LI Wenhua(Sichuan Communication Surveying&Design Institute,Chengdu 610017,China;BIM Research&Development Center,Ministry of Transport,Chengdu 610017,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China)
出处
《世界地震工程》
北大核心
2024年第2期197-207,共11页
World Earthquake Engineering
基金
四川省科技计划项目(23NSFSC1414)
四川交通院科技项目(232023002)。
关键词
公路工程
公路灾害
泸定地震
同震灾害
灾情调查
highway engineering
highway disaster
Luding earthquake
coseismic hazard
disaster investigation
