Application of square array configuration and electrical resistivity tomography for characterization of the recharge area of a karst aquifer: A case study from Menekşe karst plateau (Kocaeli, Turkey)

Şener, Ahmet; Pekşen, Ertan; Yolcubal, İrfan

doi:10.1016/j.jappgeo.2021.104474

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…Dispersed infiltration is closely related to land use type. [33]. Meanwhile, scattered infiltration is closely related to land use types, and the evaluation matrix was constructed to evaluate factor I from these two aspects (Table S1).…”

Section: Groundwater Vulnerability Assessmentmentioning

confidence: 99%

Groundwater Vulnerability and Groundwater Contamination Risk in Karst Area of Southwest China

Liu

Rong

et al. 2022

Sustainability

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Groundwater pollution in karst areas is often the result of the interaction of hydrogeological characteristics and human activities. In this study, a chimeric evaluation system of groundwater vulnerability and pollution load was constructed, and the groundwater contamination risk was intuitively displayed using a risk map. The study area is located in Qiannan, a typical karst area in Southwest China. Groundwater vulnerability was mainly calculated using the PLEIK model. Pollution source load evaluation was evaluated using the classification method. The groundwater pollution status was evaluated by the CCME WQI method. The results show that the groundwater vulnerability in the research area was mainly at a medium level. The areas with high pollution load values were mainly distributed in industrial parks and other pollution-source-gathering areas. The results of the water quality evaluation show that the groundwater quality in the study area was generally good. However, the impact of some pollution sources on the surrounding groundwater still cannot be ignored. The results reveal the risk level of groundwater pollution in typical karst areas and provide theoretical support for regional groundwater protection.

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Section: Groundwater Vulnerability Assessmentmentioning

confidence: 99%

Groundwater Vulnerability and Groundwater Contamination Risk in Karst Area of Southwest China

Liu

Rong

et al. 2022

Sustainability

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“…This has increased the demand for a prediction technique that can detect water‐bearing structures ahead of the tunnel face during tunnel excavation. Currently, many geophysical methods are used to reveal the distribution of water‐bearing structures, and these methods are widely used in tunnel engineering, including seismic methods (Jetschny et al., 2011; Lu et al., 2020; Schwenk et al., 2016; Sloan et al., 2015), ground penetrating radar (Carri`ere et al., 2013; Liu et al., 2018), electromagnetic measurements (Liu & Yin, 2014; Meqbel & Ritter, 2015; Su et al., 2020; Sun et al., 2012; Tietze & Ritter, 2013) and electrical methods (Park et al., 2017; Sener et al., 2021). Of these, the direct current (DC) resistivity method can allow the identification of water‐bearing structures in front of the tunnel face because of the significant difference in resistivity between the water‐bearing structure and the surrounding rock.…”

Section: Introductionmentioning

confidence: 99%

Forward and inversion approach for direct current resistivity based on an unstructured mesh and its application to tunnel engineering

Deng,

Li,

Nie

et al. 2024

Geophysical Prospecting

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The accurate identification of water‐bearing structures is urgently required for the safe construction of tunnel engineering. Currently, the direct current resistivity method is an effective method for detecting water‐bearing structures in tunnels. In the advanced detection of the direct current resistivity based on the finite element method, the traditional hexahedron mesh performs poorly for the discretization of models of complex tunnel structure sections such as horseshoe‐shaped and round sections. Therefore, this study adopts unstructured grid generation technology combining tetrahedra and hexahedra to achieve more accurate modelling of complex structures, such as round and horseshoe‐shaped sections, and establishes a forward modelling method of the direct current resistivity in tunnels based on an unstructured mesh. The maximum error between the numerical simulation and theoretical results for an infinite tabular body in full space is less than 0.8%. It is more complicated to calculate the sensitivity matrix and model constraint term for the inversion region containing two types of grid than for one. For this purpose, the sensitivity matrix of different types of grid areas is calculated, a model constraint term based on the dual constraints of volume and distance is constructed, and finally, a partitioned domain‐weighted least‐squares inversion method based on an unstructured mesh is proposed. Synthetic examples of typical water‐bearing structures are analysed, and the results show that the proposed forward and inverse methods of the direct current resistivity in tunnels based on an unstructured mesh can effectively capture the position and morphology of the water‐bearing structure. Finally, an on‐site application was conducted in the Yellow River Diversion Project in central Shanxi. The proposed method could effectively identify the water body in front of the tunnel face and guide the on‐site construction of the project. These results can improve the interpretation of the direct current resistivity data in tunnels and play a positive role in promoting the use of the direct current resistivity method to prevent and control water‐inrush disasters in tunnels with complex structures.

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Assessment of groundwater study using geophysical and geochemistry mapping in Thamirabarani sub-basin, Karunkulam area, Southern India

2022

Arab J Geosci

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Application of square array configuration and electrical resistivity tomography for characterization of the recharge area of a karst aquifer: A case study from Menekşe karst plateau (Kocaeli, Turkey)

Cited by 9 publications

References 7 publications

Groundwater Vulnerability and Groundwater Contamination Risk in Karst Area of Southwest China

Groundwater Vulnerability and Groundwater Contamination Risk in Karst Area of Southwest China

Forward and inversion approach for direct current resistivity based on an unstructured mesh and its application to tunnel engineering

Assessment of groundwater study using geophysical and geochemistry mapping in Thamirabarani sub-basin, Karunkulam area, Southern India

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