GPR Data

Central Arkansas Water (CAW) supplies fresh water to about a half million of Arkansas population; therefore, to avoid service interruptions and damage cost, its pipes and other facility locations must be depicted in a realistic view of the subsurface before excavation work is done. Accordingly, Ground Penetrating Radar (GPR) surveys were conducted to locate the CAW pipelines as well as other potential utility lines beneath the old Broadway Bridge prior to the planned excavation work on the bridge site. The Arkansas Department of Transportation (ARDOT) selected three sites beneath the old Broadway Bridge to be surveyed to have their subsurface precisely and interactively mapped in 3D. In this article, a new approach is presented for achieving the main objectives through integrating GPR directly with ArcGIS Pro. The results indicated that integrating GPR with ArcGIS Pro can be a powerful tool to detect, map and view utility lines in a 3D space with the needed precision. GPR technique was able to locate the CAW pipeline and other subsurface utility lines at varying depths down to 2 m at two sites. Whereas the third site was more challenging to the GPR system due to the wet subsurface and high noise-to-signal ratio. However, a concrete pipe, heavy-duty cables as well as another anomaly, which is presumably related to the CAW pipeline, were detected at the third site. It is contended that the findings of this study could help protect utility infrastructure and reduce the cost of maintenance.阿肯色州中部供水公司（Central Arkansas Water, CAW）为阿肯色州约50万人口供应淡水。因此，为避免服务中断与设施损毁损失，在开展开挖作业前，需以真实视图呈现其管道及其他设施的地下位置。为此，研究团队在旧百老汇大桥桥址的规划开挖作业前，开展了探地雷达（Ground Penetrating Radar, GPR）勘测，以定位该公司的供水管道及其他潜在地下公用管线。阿肯色州交通运输部（Arkansas Department of Transportation, ARDOT）选定旧百老汇大桥下方的三处点位开展勘测，以实现其地下空间的高精度交互式三维制图。本文提出了一种将探地雷达与ArcGIS Pro直接集成的新方法，以达成上述核心目标。研究结果表明，将探地雷达与ArcGIS Pro集成，可作为一种高效工具，在三维空间中以所需精度实现公用管线的检测、制图与可视化。探地雷达技术可在两处点位下探至2米的不同深度，成功定位阿肯色州中部供水公司的管道及其他地下公用管线。但第三处点位因地下土层潮湿、信噪比偏高，对探地雷达系统而言更具挑战性。不过，研究团队仍在第三处点位检测到一根混凝土管、多根重型电缆，以及另一处疑似与阿肯色州中部供水公司管道相关的异常体。本研究结果可助力公用基础设施保护并降低运维成本。