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near-surface geophysical analysis to a stream loss problem near a limestone quarry, ultimately to distinguish between solution cavities containing air, sediment and water in order to best delineate groundwater flow paths. The study region consisted of the streambed and surrounding region of Hoyes Run, a small tributary of the Youghiogheny …
Three‐dimensional, ground‐penetrating radar (georadar) techniques suitable for geological engineering applications have been developed and tested. Initial experiments were conducted on the floor of a quarry in southern Switzerland from which ornamental gneissic rock is extracted. During a brief two‐day period, constant‐offset georadar data …
Colborne Quarry is a massive open pit limestone quarry located in Colborne, Ontario. The town of Colborne could actually fit quite comfortably in the quarry itself. Indeed, the quarry is 2 kilometeres long by 1.5 wide and is currently ~150m deep. ... This means that topics ranging from geophysics to geochemistry to geobiology are part …
ABSTRACT Two- and three-dimensional rock-penetrating-radar data were acquired on the wall of a pillar in an underground limestone mine. The objective was to test the ability of radar to image fractures and karst voids and to characterize their geometry, aperture, and fluid content, with the goal of mitigating mining hazards. Strong radar reflections in the …
ABSTRACT Electromagnetic signals from distant radio transmitters in the frequency range 15–250 kHz were measured to model an electrical resistivity structure beneath 7 profiles in the vicinity of the Karinu limestone quarry in Estonia with the aim to map the extent of the economically exploitable limestone. The resistivity models from a …
Brauncewell Limestone Quarry, Lincolnshire. Geophysical Report. 2008
The quarry site is situated close to the Bijar city in western Iran. Limestone deposit of pliocene age is the main deposit of the quarry. The quarry consists of horizontal bedding planes in nature. The limestone is medium-hard and has uniaxial compressive strength of nearly 80 MPa and a density of 2450 kg/m 3.
The stream bounds the pit of the Deep Creek limestone quarry, operated by Keystone Lime Company. During low flow, the stream abruptly terminates in a swallet, leaving approximately 100 m of dry streambed. In addition to geophysically investigating this swallet, our study located two other zones of loss active during periods of higher flow.
Request PDF | Ambiguities in Geophysical interpretation during fracture detection-case study from a limestone quarry (Lower Silesia Region, Poland) | Geophysical studies were conducted over a ...
Quarter-wavelength spatial sampling is a minimum requirement for full-resolution GPR recording. An intensely fractured limestone quarry serves as a test site for a 100-MHz 3D GPR survey with 0.1 m × 0.2 m trace spacing. This example clearly defines the geometry of fractures in four different orientations, including vertical dips to a depth of ...
Unfortunately, limestone it-self has a very high resistance which means that this technique is less likely to be successful. A third tech-nique is geophysical diffraction tomography …
Ground penetrating radar is an efficient geophysical method for the detection and location of fractures and fracture zones in electrically resistive rocks. In this study, the use of down-hole (borehole) radar reflection logs to monitor the injection of steam in fractured rocks was tested as part of a field-scale, steam-enhanced remediation pilot …
As the rest of the GPR is a common geophysical technique to detect voids, fractures, and cavities within limestone (e.g., McMechan et al. 1998; Chamberlain et al. …
@article{Porsani2006GPRFM, title={GPR for mapping fractures and as a guide for the extraction of ornamental granite from a quarry: A case study from southern Brazil}, author={Jorge Lu{'i}s Porsani and William A. Sauck and Abad Oliveira Souza J{'u}nior}, journal={Journal of Applied Geophysics}, year={2006}, volume={58}, …
, the most common geophysical methods employed in mineral exploration are electrical, electromagnetic, gravimetric, magnetic and seismic. Shallow geophysics, for example, is used for the investigation of geological structures with small dimensions at the top of the crust. Currently, shallow geophysics is frequently used in mining [19,20].
Water seepage to ground surface at a limestone quarry located at Wadi Garawy about 20 km southeast of Helwan city in Egypt posed a real threat to the mining activity at the quarry. The quarry area is known to be very dry for decades and away from water utilities and infrastructures that may cause water leaks to the quarry.
The work was done in three distinct locations in the quarry: on the land surface above the quarry, along a road crossing the quarry, and in front or below the active quarry face. The results led to the definition of planes of structural discontinuity extending to 25 m depth, including inclined fractures and low-angle unloading joints; as well ...
Application of GPR for subsurface mapping is a field of interest for researchers in mining industry. This paper presents the results of several GPR surveys in a limestone quarry and a coal mine to map stratifications, fractures and detection of coal seams. The motivation behind this study is to support surface mining industry towards automation and …
The detection and characterization of fractures is important in many engineering practices e.g., rock fall assessment, quarry rock quality determination and mine roof and tunnel stability. Fractures may provide suitable contrasts in electrical properties for detection by GPR instruments. Their ability to reflect radar waves and the …
The quarry area is known to be very dry for decades and away from water utilities and infrastructures that may cause water leaks to the quarry. Geophysical investigation including 1D Vertical Electrical Sounding (VES), 2D Electrical Resistivity Tomography (ERT) and 1D Transient Electromagnetic (TEM) surveys were conducted to characterize the ...
limestone quarry products is therefore, limited to local construction industry. ... To monitor these structures, geophysical methods may offer an interesting compromise between the operating cost, ...
The detection and characterization of fractures is important in many engineering practices e.g., rock fall assessment, quarry rock quality determination and …
The geophysical data were modeled to provide 2-dimensional images of resistivity, current density, and velocity. ... geophysical approach used at this site allowed this property to become one of the largest and most …
To constrain fracture aperture and fill permittivity, we use the. least squares fit of normalized reflection coefficient curves to corrected CMP amplitudes. The analysis allowed …
Geophysical Prospecting. Volume 61, Issue 3 p. 678-687. A radio magnetotelluric study to evaluate the extents of a limestone quarry in Estonia ... –250 kHz were measured to model an electrical resistivity structure beneath 7 profiles in the vicinity of the Karinu limestone quarry in Estonia with the aim to map the extent of the …
This study utilizes electromagnetic conductivity (EM) using the Geonics EM-34 unit to characterize the limestone aquifer surrounding a quarry area in Western Maryland (Garrett County, Hoye's Run ...
Rock aggregates are vital for all construction projects. In northern Alberta, aggregates are especially important for oil sands mining operations, where they are used for base material under roads and building foundations, as composite materials for concrete, and in drainage applications (e.g., French drains). However, high quality rock and granular deposits, …
SPELEOLOGY, GEOPHYSICS: 2020: During this measurement, it was necessary to determine for further mining areas with quality and lower quality limestone, which is not suitable for further …
This water is of meteoric genesis. The main rechargeable sources for this water are from Eocene limestone and Pliocene aquifers. The level of groundwater can be reduced a few meters from the quarry floor; if the amount of water pumped out from the quarry area exceeds the recharge rate through the channels.
ABSTRACT Geophysical studies were conducted over a shallow mining excavation near a sinkhole that was created by partial collapse of the excavation. ... Ambiguities in geophysical interpretation during fracture detection—case study from a limestone quarry (Lower Silesia Region, Poland) Near Surface Geophysics 14, 371 (2016); https://doi ...
In the pilot study, the geometry and spatial extent of the Socerb thrust-fault, which separates limestone above from flysch below, were investigated using a 50 MHz …
As the rest of the GPR is a common geophysical technique to detect voids, fractures, and cavities within limestone (e.g., McMechan et al. 1998; Chamberlain et al. 2000; Batayneh, Abueladas and ...
ABSTRACT After conducting a successful GPR pilot study in a tectonically complex area of the Karst Thrust Edge, a follow-up study was carried out. In the pilot study, the geometry and spatial extent of the Socerb thrust-fault, which separates limestone above from flysch below, were investigated using a 50 MHz antenna in the Črnotiče quarry. After one part …
Cheshmeh-Shirdoosh limestone quarry is located about 10 km northeast of Kerman city, Iran (Fig. 1a). Three 12 m–high benches were active for extraction operations at the time of GPR measurements (Fig. 1b). Cheshmeh-Shirdoosh quarry is situated in the geological section of the central Iran zone and belongs to the Cretaceous.
DOI: 10.4133/sageep.32-035 Corpus ID: 241501333; Karst away - Geophysical surveys for resource development of a limestone quarry @article{McClymont2019KarstA, title={Karst away - Geophysical surveys for resource development of a limestone quarry}, author={Alastair F. McClymont and Chris Slater …