Mapping Ground Instability in Areas of Geotechnical Infrastructure Using Satellite InSAR and Small UAV Surveying: A Case Study in Northern Ireland
Mapping Ground Instability in Areas of Geotechnical Infrastructure Using Satellite InSAR and Small UAV Surveying: A Case Study in Northern Ireland
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DOI：
10.3390/geosciences7030051
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发表时间：
2017-09-01
期刊：
影响因子：
2.7
通讯作者：
Parker, Kieran
中科院分区：
文献类型：
--
作者：
Cigna, Francesca;Banks, Vanessa J.;Parker, Kieran
卫星干涉合成孔径雷达（干涉合成孔径雷达），地质数据和小型无人机（SUAV）测量被用来提高我们的地面运动的理解在北方爱尔兰的兴趣。1992-2000年期间，共对68幅ERS-1/2图像进行了小基线子集（SBAS）干涉合成孔径雷达技术处理，以得出五个利益攸关方感兴趣的关键区域的基线地面不稳定性情景：北爱尔兰运输局、北方爱尔兰铁路、经济部、奥雅纳和贝尔法斯特市理事会。这些利益相关者需要监测其岩土基础设施（即，我们的业务包括使用最有效、最具成本效益的方法，评估废弃矿井的沉降风险（包括采矿、采矿、岩屑、工程填料和挡土结构）或评估废弃矿井的沉降风险，以最大限度地降低和管理业务风险。干涉合成孔径雷达的结果提供了一个3000 km（2）区域的地面变形范围和大小的概览，包括卡里克费格斯废弃盐矿的关键地点、贝尔法斯特-班戈铁路线、贝尔法斯特的王座弯曲和利戈内尔公园、安特里姆海岸公路沿着的斯特雷德基利和加伦角，以及贝尔法斯特及其周边的其他城市化地区。2016年和2017年，在卡里克费格斯的Maiden Mount盐矿坍塌事件中，采用X8机身的定制SUAV活动以及通过运动结构（SfM）方法生成非常高分辨率的正射照片和3D表面模型，也证明了超高分辨率测量技术在检测局部变形和地面不稳定性指标方面的优势。
Satellite Interferometric Synthetic Aperture Radar (InSAR), geological data and Small Unmanned Aerial Vehicle (SUAV) surveying was used to enhance our understanding of ground movement at five areas of interest in Northern Ireland. In total 68 ERS-1/2 images 1992-2000 were processed with the Small Baseline Subset (SBAS) InSAR technique to derive the baseline ground instability scenario of key areas of interest for five stakeholders: TransportNI, Northern Ireland Railways, Department for the Economy, Arup, and Belfast City Council. These stakeholders require monitoring of ground deformation across either their geotechnical infrastructure (i.e., embankments, cuttings, engineered fills and earth retaining structures) or assessment of subsidence risk as a result of abandoned mine workings, using the most efficient, cost-effective methods, with a view to minimising and managing risk to their businesses. The InSAR results provided an overview of the extent and magnitude of ground deformation for a 3000 km(2) region, including the key sites of the disused salt mines in Carrickfergus, the Belfast-Bangor railway line, Throne Bend and Ligoniel Park in Belfast, Straidkilly and Garron Point along the Antrim Coast Road, plus other urbanised areas in and around Belfast. Tailored SUAV campaigns with a X8 airframe and generation of very high resolution ortho-photographs and a 3D surface model via the Structure from Motion (SfM) approach at Maiden Mount salt mine collapse in Carrickfergus in 2016 and 2017 also demonstrate the benefits of very high resolution surveying technologies to detect localised deformation and indicators of ground instability.