Special 3D electric resistivity tomography (ERT) array applied to detect buried fractures on urban areas: San Antonio Tecómitl, Milpa Alta, México

Chávez, René E.; Nava, Gabriel Miranda; HernaNdez-Quintero, J. E.; Vargas, Diana Cristina Moreno; Tejero, A.

doi:10.1016/s0016-7169(14)70076-5

Cited by 18 publications

(9 citation statements)

References 10 publications

(17 reference statements)

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“…Subsidence of a structural lid over a cavity can be caused by withdrawal of a pressurized fluid within the subsurface, due to absence of hydrostatic support [e.g., Ege, 1984;Rodriguez et al, 2005]. This lessens structural integrity due to propagation of subsurface fracture arrays [e.g., Zegers et al, 2010;Chavez et al, 2014], and in the case of ice, melting and associated thinning due to a heat source [McKenzie, 1978] of the ice at the base or within the structure in the form of a pocket [e.g., Bindschadler et al, 2002;Glasser and Scambos, 2008;Walker et al, 2012]. Subsidence occurs in localized regions surrounding structural/mechanical weaknesses within material.…”

Section: Introductionmentioning

confidence: 99%

Ice collapse over trapped water bodies on Enceladus and Europa

Walker

Schmidt

2015

Geophysical Research Letters

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Icy satellite surfaces are riddled with geological indicators that can inform what lies beneath. Here we investigate effects of trapped or perched subsurface liquid water on the surface above. We use two models to investigate these effects: first, an analytical model to determine the flexural response of an ice shell to the existence of trapped water, and second, a discrete element model that simulates collapse of ice through granular interactions to determine possible topography that would result from this stress being placed on the ice. We find that for Europa's likely trapped water pockets below chaos terrains and a localized sea below Enceladus' South Polar Terrain, these models can reproduce observed geology of both features. Thus, we postulate that it is likely that Europa's chaos terrains and Enceladus' South Polar Terrain formed due to a similar mechanism: ice collapse above trapped water.

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Section: Introductionmentioning

confidence: 99%

Ice collapse over trapped water bodies on Enceladus and Europa

Walker

Schmidt

2015

Geophysical Research Letters

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“…In recent years, more research has been devoted to the research on 3D measurement, leading to higher accuracy of 3D detection. However, the effectiveness of 3D detection is still under investigation and is limited to the measurement of space and time [41][42][43][44][45]. Thus, 2D detection is still the most economical and feasible measurement method at present.…”

Section: Electrical Resistivity Tomography (Ert)mentioning

confidence: 99%

Development of an Underground Tunnels Detection Algorithm for Electrical Resistivity Tomography Based on Deep Learning

2022

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Kinmen Island was in a state of combat readiness during the 1950s–1980s. It opened for tourism in 1992, when all troops withdrew from the island. Most military installations, such as bunkers, anti airborne piles, and underground tunnels, became deserted and disordered. The entries to numerous underground bunkers are closed or covered with weeds, creating dangerous spaces on the island. This study evaluates the feasibility of using Electrical Resistivity Tomography (ERT) to detect and discuss the location, size, and depth of underground tunnels. In order to discuss the reliability of the 2D-ERT result, this study built a numerical model to validate the correctness of in situ measured data. In addition, this study employed the artificial intelligence deep learning technique for reprocessing and predicting the ERT image and discussed using an artificial intelligence deep learning algorithm to enhance the image resolution and interpretation. A total of three 2D-ERT survey lines were implemented in this study. The results indicate that the three survey lines clearly show the tunnel location and shape. The numerical simulation results also indicate that using 2D-ERT to survey underground tunnels is highly feasible. Moreover, according to a series of studies in Multilayer Perceptron of deep learning, using deep learning can clearly show the tunnel location and path and effectively enhance the interpretation ability and resolution for 2D-ERT measurement results.

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“…One of the most used non-invasive techniques for subsoil exploration is geophysics and, more specifically, electrical resistivity tomography, in both two and three dimensions [15][16][17][18][19][20][21], and metrological perspectives of tomography in civil engineering [22]. In recent years, this method has proven to be an efficient tool, not only to monitor wall degeneration [23], but also to detect other types of problems in building foundations, such as subsoil degradation [14,24,25].…”

Section: Introductionmentioning

confidence: 99%

Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain

Gutiérrez-Martín

Yenes²,

Fernández

et al. 2021

Applied Sciences

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The paper proposes a novel methodology for the stabilization of shallow foundations, with a simplified model combined with 3D electrical resistivity tomography (ERT-3D and consolidation injections. To determine its usefulness, the method has been applied in a case located in Estepona (southern Spain). The chosen tomography model is the dipole–dipole configuration, with an optimized distance between electrodes of 0.80 m for a better visualization of the foundation subsoil; with this parameterization, a total of 72 electrodes were installed in the analyzed case. In this work, the depth of the anomaly in the building’s supporting subsoil was detected ranging from 2.00 m to 3.90 m deep. The study also delineates areas of high resistivity variations (50–1000 Ω m) in the middle and eastern end of the field. These data have been validated and corroborated with a field campaign. The results of the ERT-3D monitoring are presented, once the investment data has been processed with the RES3DINV software, from the beginning to the end of the stabilization intervention. The novelty occurs with the interaction between the tomography and the foundation consolidation injections, until the final stabilization. This is a very useful methodology in case of emergency consolidation, where there is a need to minimize damage to the building. Thus, people using this combined system will be able to practically solve the initial anomalies of the subsoil that caused the damages, in a non-invasive way, considerably lowering the value of the resistivities.

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Special 3D electric resistivity tomography (ERT) array applied to detect buried fractures on urban areas: San Antonio Tecómitl, Milpa Alta, México

Cited by 18 publications

References 10 publications

Ice collapse over trapped water bodies on Enceladus and Europa

Ice collapse over trapped water bodies on Enceladus and Europa

Development of an Underground Tunnels Detection Algorithm for Electrical Resistivity Tomography Based on Deep Learning

Stabilization Methodology in Foundation Soils by ERT-3D Application in Estepona, South Spain

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