Water-saturated zone recognition using integrated 2D electrical resistivity tomography, borehole, and aerial photogrammetry in granite deposit, Malaysia

Junaid, Muhammad; Abdullah, Redzuan; Sa’ari, Radzuan; Ali, Wahid; Rehman, Hamood Ur; Shah, Kausar Sultan; Sarı, Mahmut

doi:10.1007/s12517-022-10572-x

Cited by 7 publications

(3 citation statements)

References 28 publications

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“…In this experiment, first, image control points (GCPs) were laid out for the survey area before the aerial survey (we established thirteen GCPs in different regions, which were used for the geographic alignment of the 3D point cloud to improve the accuracy of the point-cloud data [ 21 ]). Then, a tilt-photography aerial survey of the open-pit mines was carried out to obtain the UAV image set.…”

Section: Methodsmentioning

confidence: 99%

Extraction of Step-Feature Lines in Open-Pit Mines Based on UAV Point-Cloud Data

Mao

Wang

et al. 2022

Sensors

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Step-feature lines are one of the important geometrical elements for drawing the status quo maps of open-pit mines, and the efficient and accurate automatic extraction and updating of step-feature lines is of great significance for open-pit-mine stripping planning and analysis. In this study, an automatic extraction method of step-feature lines in an open-pit mine based on unmanned-aerial-vehicle (UAV) point-cloud data is proposed. The method is mainly used to solve the key problems, such as low accuracy, local-feature-line loss, and the discontinuity of the step-feature-line extraction method. The method first performs the regular raster resampling of the open-pit-mine cloud based on the MLS algorithm, then extracts the step-feature point set by detecting the elevation-gradient change in the resampled point cloud, further traces the step-feature control nodes by the seed-growth tracking algorithm, and finally generates smooth step-feature lines by fitting the space curve to the step-feature control nodes. The results show that the method effectively improves the accuracy of step-feature-line extraction and solves the problems of local-feature-line loss and discontinuity.

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Section: Methodsmentioning

confidence: 99%

Extraction of Step-Feature Lines in Open-Pit Mines Based on UAV Point-Cloud Data

Mao

Wang

et al. 2022

Sensors

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“…Electrical resistivity surveys have been widely employed in hydrogeological, mining, environmental, and geotechnical studies for several decades due to their cost-effectiveness and ease of application in the field. The characterization of Earth materials benefits significantly from the analysis of electrical properties, which are highly valuable geophysical parameters [9]. This phenomenon arises due to the observed correlation between variations in electrical resistivity (or its inverse, conductivity) and variations in lithology, water saturation, fluid conductivity, porosity, and permeability.…”

Section: Introductionmentioning

confidence: 99%

Groundwater Potential Mapping in Lapan Gwari Community Using Integrated Remote Sensing and Electrical Resistivity Soundings

Mangs,

Ejepu,

Nkemkah

et al. 2023

IJG

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This research aims to address the pressing issue of failed and abandoned wells, causing water scarcity in Lapan Gwari Community, through an improved groundwater exploration approach integrating remote sensing and electrical resistivity soundings. The study area, located within the Zungeru Sheet 163 SE, spans Latitudes 9˚30'00"N to 9˚32'00"N and Longitudes 6˚28'00" to 6˚30'00". The surface geologic, structural, and hydrogeological mapping provided essential insights into the hydrogeological framework. Leveraging SRTM DEM data, thematic maps were created for geomorphology, slope, land use, lineament density, and drainage density. These datasets were then integrated using ArcGIS to develop a preliminary groundwater potential zones map. Further investigations were conducted using Vertical Electrical Sounding (VES) and Electrical Resistivity Imaging (2D VES) surveys at targeted locations identified by the preliminary map. Results show that the study area predominantly consists of crystalline rocks of the Nigerian Basement Complex, primarily comprising schist and granite with minor occurrences of quartz vein intrusions. Surface joint directions indicated a dominant NE-SW trend. The VES data revealed three to four geoelectric layers, encompassing the topsoil (1 to 5 m depth, resistivity: 100 Ωm to 300 Ωm), the weathered layer (in the 3-layer system) or fractured layer (in the 4-layer system), and the fresh basement rock characterized by infinite resistivity. The shallow weathered layers (3 to 30 m thickness) are believed to hold aquiferous potential. Hydrogeological interpretation, facilitated by 2D resistivity models, delineated water horizons How to cite this paper: Mangs, A.D.,

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“…Since it is particularly sensitive to conductive bodies, TEM has recently become a frequently utilized, inexpensive, and powerful technique in hydrogeological investigation (Sharlov et al, 2019;Killingbeck et al, 2020 andZarif et al, 2021a). The 2D-ERI approach, on the other hand, is regarded as the first geophysical technique to be intended for locations with limited subsurface data (Dos Santos Gomes et al, 2018;Zarif et al, 2021a andJunaid et al, 2022). Electrical and electromagnetic tools are performed to evaluate groundwater resources because they are both sensitive to physical and chemical variations in the subsurface associated with changing groundwater quality (Louis et al, 2002;Bowling et al, 2007;Rangel et al, 2021 andZarif et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

Geophysical Approach to Delineate Groundwater Potentials in the Northwestern Part of Wadi Dara, Eastern Desert, Egypt

Rahman

Zarif

Elshenawy

2022

Egyptian Journal of Desert Research

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he applied geophysical investigations attempt to locate the waterbearing layer(s) that are regarded as the most important elements for the development objectives, which are developed northwest of Wadi Dara, east of the Gulf of Suez. To investigate the condition of groundwater potentials, twenty-five Transients Electromagnetic [TEM] soundings and six twodimensional Electrical Resistivity Imaging [2D-ERI] lines were conducted. The results of the two geophysical methods detected four main geoelectrical layers (Quaternary alluvium deposits [A], layer of dry sand, gravel and shale [B], waterbearing layer/s [C], and basement rocks [D]). Two aquifers were identified during this study. The first aquifer [sublayer C1] corresponds to sandstone, shale, and limestone deposits of the Middle Miocene age. It has low resistivity values ranging from 3 Ωm to 9 Ωm and is restricted to the east direction. This sublayer had a thickness of about 50 m. The second aquifer [sublayer C2] corresponds to Lower Cretaceous sandstone, which has resistivity values ranging from 13 Ωm to 106 Ωm. It was observed that subsurface geological structures have a significant effect on groundwater occurrences throughout the study area. As a result, the generated geoelectrical cross sections show an apparent connectivity between the two aquifers. Because of variability in resistivity values and thicknesses, the groundwater potential varies throughout the studied area. The western portions of the study areas have priority for drilling productive wells into the lower Cretaceous sandstone aquifer, and then the eastern portions offer groundwater from deposits of sandstone, shale, and limestone of the Middle Miocene age.

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Water-saturated zone recognition using integrated 2D electrical resistivity tomography, borehole, and aerial photogrammetry in granite deposit, Malaysia

Cited by 7 publications

References 28 publications

Extraction of Step-Feature Lines in Open-Pit Mines Based on UAV Point-Cloud Data

Extraction of Step-Feature Lines in Open-Pit Mines Based on UAV Point-Cloud Data

Groundwater Potential Mapping in Lapan Gwari Community Using Integrated Remote Sensing and Electrical Resistivity Soundings

Geophysical Approach to Delineate Groundwater Potentials in the Northwestern Part of Wadi Dara, Eastern Desert, Egypt

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