3D Resistivity Imaging of Buildings and Foundations in Urban and Protected Areas  

作　　者：Manuel Matias Nuno Barraca Rui Moura 

机构地区：[1]Department of Geosciences,University of Aveiro,Aveiro 3810-193,Portugal [2]Department of Geosciences,Environment and Spatial Planning,University of Porto,Porto 4169-007,Portugal

出　　处：《Journal of Civil Engineering and Architecture》2019年第1期1-15,共15页土木工程与建筑（英文版）

摘　　要：The use of Geophysics in Civil Engineering is an established practice.Herein,it will be exploited the use of 3D resistivity imaging to investigate foundations and features under buildings in urban areas where no direct invasive methods are allowed.High-resolution 3D resistivity requires the deployment of a dense grid of electrodes and,in urban areas,these methods face problems such as space limitation and availability owing to buildings,pavements,asphalts,obstacles and infrastructure.Thus,the use of conventional electrode arrays and grids may not be possible and alternatives must be sought.Herein a non-conventional array,pole-pole,is explored to characterize foundations and features under existing constructions in delicate and protected environments.A simple but effective data check is also proposed and allows to estimate the resistivity distribution in the area.Results prove the adequacy and versatility of the pole-pole array to carry out 3D resistivity surveys in urban areas.Data quality checks also proved effective and provided early qualitative images of the resistivity distribution in the areas to be used as an aid in later interpretation and data modelling stages.

关 键 词：RESISTIVITY 3D pole-pole URBAN QUALITY 

分 类 号：TU[建筑科学]