Quantifying the impact of 3D effects on 3D Electrical Resistivity Tomography data at Mactaquac Dam, New Brunswick

EPSRC：John Ball：EP/R513076/1地球物理技术正越来越多地被用于监测大坝的结构状况，因为它们覆盖的范围很广，而且能够检测地下问题，如渗漏路径的发展。其中一种技术是电阻率层析成像(ERT)，它对水分和孔隙率很敏感，这意味着它可以用来检测潜在的渗漏区域，从而检测大坝的部分失灵。地球物理数据的分析通常需要计算机模型。在我的博士学位中，我一直在探索，如果不考虑现场的3D几何形状或大坝附近水位的动态变化，这样的模型如何导致错误的解释。这次交流将使我能够将我一直在工作的一些方法应用到加拿大的一个已应用地球物理技术的既定地点。我预计，这项工作将使数据解释更具确定性。

EPSRC : John Ball : EP/R513076/1 Geophysical techniques are being increasingly used to monitor the structural conditions of dams, due to their widespread coverage and ability to detect subsurface issues, such as the development of seepage pathways. One such technique is Electrical Resistivity Tomography (ERT), which is sensitive to moisture content and porosity, meaning it can be useful for detecting areas of potential seepage, and therefore parts of the dam which are failing.Analysis of geophysical data often requires computer models. In my PhD I have been exploring how such models can lead to incorrect interpretations if the 3D geometry of the site or dynamic variation in water levels adjacent to the dam are not accounted for. This exchange will allow me to apply some of the approaches I have been working on to an established site in Canada where geophysical techniques have been applied. I anticipate that the work will enable greater certainties in data interpretations.