InSAR for geotechnical infrastructure: enabling stakeholders to remotely assess environmental risk and resilience.

该项目的三个利益攸关方，北爱尔兰交通局(TNI)、北爱尔兰铁路局(NIR)和企业、贸易和投资部(DETI)都有一个共同的需求，该项目满足了这一需求。他们必须使用最有效和最具成本效益的方法，监察其岩土资产(例如路堤、路基和挡土构筑物)的地面变形，以期尽量减少和管理对其业务和道路/铁路使用者的岩土风险。因此，这项工作的目标是应用英国地质调查局(BGS)通过过去的研究项目开发的方法，利用卫星干涉合成孔径雷达(InSAR)评估岩土基础设施的变形，例如斜坡移动或地面沉降。该项目将通过地面实况、使用贝尔法斯特女王大学(QUB)开发的岩土监测和高分辨率摄影测量来验证这一方法。通过这个项目，利益相关者将能够以更具成本效益、更有效、更全面和更强大的方式监测地面变形，并将这种方法的使用嵌入到他们的组织中，从而改变他们如何评估和管理其岩土基础设施的弹性。TNI预计，InSAR数据的使用将有助于形成他们监测其岩土资产的战略，并将纳入其基础设施资产的现有基于地理信息系统的风险评估方法。斯特里基利的场地只是A2海岸公路沿线许多不稳定路段中的一个，希望InSAR能够更深入地了解影响道路的各种地质灾害的行为，并为其维护战略提供参考，从而实现更具成本效益的、更有针对性的维护。TNI还致力于更好地了解贝尔法斯特王座弯道缓慢移动故障的故障机理。InSAR数据将使斜坡移动与降雨强度和持续时间之间有更好的相关性。InSAR数据还将有助于更好地绘制不稳定程度和程度的地图。NIR还希望能够将贝尔法斯特-班戈铁路线上的斜坡不稳定性与降雨量数据联系起来。环保部预计，该项目将验证新的监测方法，并提供地面运动的基线数据，以形成未来有关地质灾害的战略决策的基础。在Carrickfergus的地点使用InSAR可能会提供更多关于沉陷边界范围的知识，并通过对照已知的地面快速塌陷时期分析SAR数据，为潜在的灾难性塌陷提供指标。

The three stakeholders in this project, Transport Northern Ireland (TNI), Northern Ireland Rail (NIR) and the Department of Enterprise, Trade and Investment (DETI) all have one common need which this project addresses. They are required to monitor ground deformations across their geotechnical assets (e.g. embankments, cuttings and earth retaining structures) using the most efficient, cost effective methods, with a view to minimising and managing the geotechnical risk to their businesses and the road/rail users. The objective of the work therefore is to apply the methodologies that the British Geological Survey (BGS) have already developed through past research projects of assessing the deformation of geotechnical infrastructure, such as slope movement or ground subsidence, using Satellite Interferometric Synthetic Aperture Radar (InSAR). The project will validate this methodology through ground truthing, using geotechnical monitoring and high resolution photogrammetry developed by Queen's University Belfast (QUB). Through this project, the stakeholders will be able to monitor ground deformations in a more cost effective, efficient, more thorough and more robust way, and embed the use of this methodology across their organisations making a step change on how they approach assessment and manage the resilience of their geotechnical infrastructure.TNI anticipate that the use of InSAR data will help form their strategies for monitoring their geotechnical assets and will feed into the existing GIS based risk assessment methods for their infrastructure assets. The site at Straidkilly is only one of many sections along the A2 coast road that is unstable and it is hoped that InSAR will give a much greater insight into the behaviour of a variety of geohazards that impact on the road and will inform their maintenance strategies and lead to more cost effective better targeted maintenance. TNI also are committed to having a better understanding of the mechanisms of failure on the slow moving failures on the Throne Bend in Belfast. The InSAR data will allow a much better correlation between slope movement and rainfall intensity and duration to be undertaken. InSAR data will also allow better mapping of the extent and magnitude of the instability. NIR also hope to be able to correlate the slope instability against rainfall data on the Belfast-Bangor rail line. DETI anticipate that the project will validate new methods of monitoring and provide baseline data of ground motion to form the basis of future strategic decisions in regards to geohazards. The use of InSAR at sites in Carrickfergus will potentially provide greater knowledge of extent of subsidence boundaries and provide indicators to potential catastrophic collapse by analysing SAR data against periods of known rapid collapse of ground.