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Browsing by Author "Van Schoor, Michael"

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3D_GPR_URBAN

Author: Van Schoor, Michael Date: Oct 2021 The versatility of ground penetrating radar (GPR) to solving different subsurface detection problems in urban settings is demonstrated. In particular, the advantage of the 3D approach to GPR surveying and how it complements the traditional ... Read more
Airborne ground penetrating radar: practical field experiments

Author: Van Schoor, Michael ; Vogt, D Date: Oct 2013 The performance of ground penetrating radar (GPR) under conditions where the ground coupling of the antenna is potentially compromised is investigated. Of particular interest is the effect of increasing the distance between the antennae and ... Read more
The application of geophysics in South African coal mining and exploration

Author: Van Schoor, Michael ; Fourie, CJS Date: Oct 2014 Coal remains South Africa’s most abundant and cheapest source of energy, and there is an ever-increasing necessity for optimal and safe extraction of the remaining reserves. Increasing focus on cost-effective mining and zero harm to the ... Read more
Comparison between time-and frequency-domain induced polarisation parameters

Author: Van Schoor, Michael ; Mare, LP ; Fourie, CJS Date: Sep 2009 Physical properties of rock samples from exploration or mining sites are often needed to assist in the planning of geophysical surveys or in the interpretation of geophysical results. For example, the output from a physical property study may ... Read more
A comparison of GPR performance at various frequencies - a guide to improved survey design

Author: Kgarume, Thabang E ; Brovko, Fatheela ; Van Schoor, Michael Date: Sep 2015 This paper aims to demonstrate, through practical examples and numerical modelling, the trade-off between range and resolution in ground penetrating radar (GPR) prospecting. GPR surveys can easily fail when the target and host rock properties ... Read more
A controlled monitoring study of simulated clandestine graves using 3D ground penetrating radar

Author: Van Schoor, Michael ; Nienaber, WC ; Marais-Werner, A Date: Jun 2017 A controlled three-dimensional ground penetrating radar monitoring study over simulated clandestine graves was conducted near Pretoria, South Africa, in which the detectability of graves as a function of post-burial interval was assessed, as ... Read more
Deep-level Gold and Platinum Mining - The Application of Geophysics in South Africa

Author: Van Schoor, Michael ; Nkosi, Nomqhele Z ; Magweregwede, Fleckson ; Kgarume, Thabang E Date: Aug 2022 This book provides the basic know-how and guidance to effectively exploit non-destructive geophysical technologies and apply them in the underground mining environment to optimise mineral extraction and to contribute to safer mining. The ... Read more
Detection of sinkholes using 2D electrical resistivity imaging

Author: Van Schoor, Michael Date: Jul 2002 Sinkholes in dolomitic areas are notoriously difficult geophysical targets, and selecting an appropriate geophysical solution is not straightforward. Electrical resistivity imaging or tomography (RESTOM) is well suited to mapping sinkholes ... Read more
Development of and tests with the NMR technique to detect water bearing fractures

Author: Meyer, R ; Van Schoor, Michael ; Greben, JM Date: 2007 The theory and application of Nuclear Magnetic Resonance Soundings also referred to as Magnetic Resonance Soundings (MRS) for the exploration of groundwater in porous aquifers has been well developed and tested. To date the method is usually ... Read more
Further case histories

Author: Van Schoor, Michael Date: Jan 2015 This chapter includes a collection of additional case study examples relating to some of the most pertinent coal problems described in this book. Where possible, local coal examples were selected for inclusion, but otherwise the selected ... Read more
Geophysical delineation of AMD in the Cradle of Humankind

Author: Van Schoor, Michael ; Hobbs, Philip Date: Aug 2016 Acid mine drainage (AMD) and its effect on surface and groundwater resources in the Cradle of Humankind (COH) area near Krugersdorp is a pertinent and well-documented concern. In 2008, a water resources monitoring programme for the area was ... Read more
High-resolution, short-range, in-mine geophysical techniques for the delineation of South African orebodies

Author: Van Schoor, Michael ; Du Pisani, P ; Vogt, D Date: Jul 2006 The economic horizons of the two major precious metal ore deposits of South Africa, the Bushveld Complex (platinum) and the Witwatersrand Basin (gold), exhibit remarkable lateral continuity on a regional scale. Consequently, the geometry of ... Read more
High-resolution, short-range, in-mine geophysical techniques for the delineation of South African orebodies

Author: Van Schoor, Michael ; du Pisani, P ; Vogt, D Date: 28 Feb 2006 The two major precious metal ore deposits of South Africa, the Bushveld Complex (platinum) and the Witwatersrand Basin (gold), exhibit remarkable lateral continuity on a regional scale. Consequently, the geometry of the respective planar ... Read more
Identifying structural damage with ground penetrating radar

Author: Van Schoor, Michael ; Fourie, CJS Date: Jul 2008 Ground penetrating radar (GPR) and electrical resistance tomography (ERT) surveys were conducted in an urban environment in an attempt to identify the cause of severe structural damage to a historically significant residential property in ... Read more
In-mine (tunnel-to-tunnel) electrical resistance tomography in South African platinum mines

Author: Van Schoor, Michael ; Binley, A Date: Dec 2009 The applicability of tunnel-to-tunnel electrical resistance tomography (ERT) for imaging disruptive geological structures ahead of mining, in an igneous platinum mining environment is assessed. The geophysical targets of interest are slump ... Read more
In-mine electrical resistance tomography for imaging the continuity of tabular orebodies

Author: Van Schoor, Michael Date: Sep 2006 One of the strengths of the electrical resistance tomography (ERT) technique is its flexibility in terms of survey geometries. In this paper an unconventional and novel ERT application that is geometrically analogous to in-seam seismic ... Read more
Introduction to the geophysical methods applicable to coal

Author: Fourie, S ; Van Schoor, Michael ; Vogt, D ; van der Walt, J ; Jikelo, A ; Campbell, G ; Du Plessis, A Date: Jan 2015 This chapter introduces a range of geophysical methods that may be applicable to coal mining and exploration problems. The focus of these discussions is on emphasising the link between geology and physics – and how the different geophysical ... Read more
Investigating airborne low frequency GPR antenna-ground coupling through modelling

Author: Vogt, D ; Van Schoor, Michael Date: Oct 2013 Ground Penetrating Radar (GPR) is often a good tool for detecting near surface structure, as it is cheap, fast and has high resolution. At lower frequencies, it is an excellent tool for detecting voids such as sinkholes, old excavations or ... Read more
Mining research for enhanced competitiveness

Author: Vogt, D ; Brink, VZ ; Donovan, S ; Ferreira, G ; Haarhoff, J ; Harper, G ; Stewart, R ; Van Schoor, Michael Date: Nov 2008 Mining is very important to South Africa, contributing 7% of GDP directly, and 15% indirectly and employing more than 450 000 people. With the world’s largest resources of gold, platinum and ferrochrome, and major coal resources, mining will ... Read more
The physical properties of coal

Author: Van Schoor, Michael ; Mare, L Date: Jan 2015 This chapter explains why geophysicists usually want to know as much as possible about the physical properties of the different lithological units in an area before embarking on a geophysical survey. We also highlight some of the common ... Read more

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Browsing by Author "Van Schoor, Michael"

Browsing by Author "Van Schoor, Michael"

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