Two-dimensional electrical resistivity tomography (ERT) and time-domain-induced polarization (TDIP) study in hard rock for groundwater investigation: a case study at Choutuppal Telangana, India

Kumar, Dewashish; Mondal, Setbandhu; Nandan, M. J.; Harini, P.; Sekhar, B; Sen, Mrinal K.

doi:10.1007/s12517-016-2382-1

Cited by 26 publications

(8 citation statements)

References 32 publications

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“…Electrical resistivity tomography is now being used worldwide for delineation of groundwater resources for various purposes such as groundwater exploration to meet water supply demand, dewatering of mines to prevents land slide and flood flash in mines, extraction of geothermal energy etc. (Krisnamurthy et al, 2006;Hamzah et al, 2006;Anthony and John, 2010;Kumar et al, 2011Kumar et al, , 2016Ratnakumari et al, 2012;Rai et al, 2013Rai et al, , 2015Rai et al, , 2019aRai et al, , 2019bGupta et al, 2016;Thiagarajan et al, 2018;Singh et al, 2019). The main advantages of geophysical electrical survey using multi-electrode ERT systems are: (1) fast computer controlled data acquisition for a single layout of multi-electrodes along the survey line; (2) simultaneous mapping of the geological formation in both vertical as well as lateral directions; and (3) increased resolution of the computed images of the subsurface geological formations due to processing of large amount of acquired data.…”

Section: Electrical Resistivity Tomography (Ert)mentioning

confidence: 99%

Untitled

2020

JWEAM

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A major share of water supply to meet the ever increasing demands for domestic, industrial and irrigation usages is derived from groundwater resources which are distributed over the entire globe. These resources are invisible from ground surface. The need for their delineation with high precision has led to the continuous advancement in the geophysical survey techniques and interpretation theory. Electrical resistivity tomography (ERT) is an outcome of such advancement in the conventional electrical resistivity methods used for exploration of this sub-surface natural resource on the basis of distinctive reduction in the electrical resistivity value of groundwater bearing geological formations/structure in comparison to their host environs devoid of water. Objective of this paper is to present an overview of the application of ERT in delineation of groundwater resources in complex geological setup of problematic areas, sources of geothermal water, and delineation of groundwater pockets in mining areas in order to prevent natural disasters such as landslide in open cast mines with the help of related case studies. This kind of knowledge about the occurrence of groundwater/geothermal resources is essential to achieve the preset objectives of their management.

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Section: Electrical Resistivity Tomography (Ert)mentioning

confidence: 99%

Untitled

2020

JWEAM

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“…The main advantages of the ERT methodology are that it a globally accepted and costeffective non-invasive geophysical method, and its efficacy in determining the geoelectrical changes within the subsurface is well demonstrated (Balakrishna et al, 2014;Caputo et al, 2003;Chambers et al, 2009;Chandra et al, 2016;Colella et al, 2004;Mojica et al, 2017;Rao et al, 2012;Rizzo et al, 2004;Zhou et al, 2000). ERT has several advantages over other geophysical methods due to its relative simplicity, efficiency, and robustness of the equipment and field data collection procedure (Balakrishna et al, 2014;Chambers et al, 2009;Kumar et al, 2016;Mojica et al, 2017), which makes it especially well suited in remote and poorly developed regions where logistical conditions are challenging (Suski et al, 2010).…”

Section: Ert Surveymentioning

confidence: 99%

Hydrogeological characterisation of regional faults and dolerite dykes in the Precambrian Basement and Karoo Supergroup (Tete Province, Mozambique)

Minnaar

Dippenaar

2019

South African Journal of Geology

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Faults and dolerite dykes within Basement- and Karoo-aquifers in northern Mozambique may increase groundwater occurrence but may also be barriers to groundwater flow. Should observation boreholes drilled into regional and local faults as well as dykes show a response to aquifer testing, it would be deduced that these hydrogeological discontinuities are not barriers to groundwater flow. The approach adopted for this study included a sequential process involving data acquisition through a hydrogeological fieldwork programme consisting of geophysical surveys, borehole drilling, aquifer testing, and groundwater level monitoring. The Zambezi Border and geological contact faults were characterised by high variability in hydraulic properties. Aquifer testing resulted in drawdown in observation boreholes as well as a reduction in piezometric surface in the installed vibrating wire piezometers located in different aquifer units, indicating the Zambezi Border- and geological contact-faults were not barriers to groundwater flow. Not all the northwest-southeast trending dykes acted as barriers to groundwater flow, as there were discreet intervals with relatively high permeability present.

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“…The weathering front acts along the fracture, fissure, and joints over a period of time, thus advancing the process of weathering. The weathered layer forms the repository for groundwater accumulation and movement [13]. The yield is lower than 3000 L/h [14].…”

Section: The Study Areamentioning

confidence: 99%

Borehole Logging and Slug Tests for Evaluating the Applicability of Electrical Resistivity Tomography for Groundwater Exploration in Nampula Complex, Mozambique

Chirindja

Rosberg

Dahlin

2017

Water

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In Nampula province, Mozambique, there is a high number of water wells considered as having failed for having too low a pumping yield. Two Electrical Resistivity Tomography (ERT) measurement campaigns were conducted in the area for evaluating the reasons of failures. However, in some cases it was difficult to verify and interpret the ERT results by only using the inadequate lithological description presented in drilling reports. In this paper the integration of borehole logging and slug testing is presented as a solution to add more information and to enhance the interpretation of ERT models. The borehole logging tool measured resistivity, magnetic susceptibility and natural gamma. The logging results proved that the ERT models are accurate in estimating the resistivity for basement (>1400 Ωm), fractured layer (220-1400 Ωm), semi-weathered layer with clay accumulation (10-220 Ωm), and weathered and leached layer (220-2700 Ωm). The slug testing gave results of high hydraulic conductivity (K) values where the ERT indicates well-developed weathered and fractured layers, and low K values where these are less developed. The borehole interpretation can be extrapolated using the ERT model to give a geometric characterization of the aquifer. Therefore, the implementation of the ERT method in groundwater exploration is encouraged.

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Two-dimensional electrical resistivity tomography (ERT) and time-domain-induced polarization (TDIP) study in hard rock for groundwater investigation: a case study at Choutuppal Telangana, India

Cited by 26 publications

References 32 publications

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Hydrogeological characterisation of regional faults and dolerite dykes in the Precambrian Basement and Karoo Supergroup (Tete Province, Mozambique)

Borehole Logging and Slug Tests for Evaluating the Applicability of Electrical Resistivity Tomography for Groundwater Exploration in Nampula Complex, Mozambique

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