InSAR技术在成都市道路病害识别工作中的应用潜力分析

Application Potential Analysis of InSAR Technology in Road Disease Identification in Chengdu

城市道路作为城市最主要的基础设施,不仅承载着交通运行的重任,同时也是各类管网、地下设施最为集中的区域,是城市正常运转的基础。城市路面塌陷会影响道路交通运行效率,威胁行车安全,造成财产损失。多数路面塌陷,往往不是突然发生的,其在发生前,可能已经经过了数月的缓慢变形,并最终达到临界条件发生塌陷,而时间序列InSAR技术能有效识别这种缓慢变形趋势。本文以成都市为例,使用InSAR技术对道路进行监测,探讨InSAR技术在城市道路病害识别工作的应用价值,结果表明InSAR技术具有宏观形变发现能力,但在较为微观的道路病害发现方面存在较多技术限制,可作为道路病害识别的补充技术手段。

As the most important infrastructure of a city,urban roads not only carry the heavy responsibility of traffic operation,but also are the most concentrated areas of various pipe networks and underground facilities,and are the basis for the normal operation of the city.Urban road collapse will affect the efficiency of road traffic operation,threaten driving safety,and cause property damage.Most road collapses often do not occur suddenly.Before they occur,they may have experienced slow deformation for several months,and finally reach a critical condition to collapse.Time series InSAR technology can effectively identify this slow deformation trend.Taking Chengdu as an example,this paper uses InSAR technology to monitor roads,and discusses the application value of InSAR technology in urban road disease identification.The results show that InSAR technology has macroscopic deformation discovery capabilities,but there are many technical limitations in road disease identification which is in microscopic level,it can be used as a supplementary technical means for road disease identification.