Project 8.4.5 – Using GPR to Improve Rehab Soil Characterisation
Dr DG Patterson April 2020
R1500,00
Description
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Detection of Old Workings, Sinkholes, Underground Fires and Acid Mine Pollution Using Geophysics and Airborne Thermal Infrared Imagery
2002
Field trials at four collieries comparing ground and airborne geophysical methods, with case studies and an applications guideline for the Witbank and Highveld collieries.
What this report foundMicro-gravity, electrical resistivity and time domain electromagnetics located the boundary between old workings and virgin ground, but no ground technique...
R1500,00
Micro-gravity, electrical resistivity and time domain electromagnetics located the boundary between old workings and virgin ground, but no ground technique tested could resolve individual bords and pillars at the depths typical of the Witbank and Highveld coalfields. Airborne thermal infrared surveys worked well as a low cost regional reconnaissance tool for shallow sinkholes, fires and possible pollution plumes.
The Optimum Methodology for Conducting High Resolution, Shallow Reflection Seismic Surveys on South African Collieries
2001
Field procedure standards for high resolution seismic work over seams 30 to 100 m deep, trialled at two Mpumalanga collieries, with a cost comparison against exploration drilling.
What this report foundShallow reflection seismic surveys failed on South African collieries mainly because too little preliminary data, from vertical seismic profiles and noise...
R1500,00
Shallow reflection seismic surveys failed on South African collieries mainly because too little preliminary data, from vertical seismic profiles and noise spreads, was gathered before the surveys were designed. Following the field procedures set out here produces usable data for mine planning. For target depths under about 150 m, exploration drilling stays cheaper, because shot holes must be drilled below the weathered layer.
Life sustainability of underground refuge bays of South African collieries
2023
An industry database of South African refuge bay designs set beside practice in Australia, Canada and the United Kingdom, prompted by recent underground emergencies.
What this report foundNo single global standard governs refuge bay design, and the collieries surveyed differ widely in construction, location, equipment and operating practice...
R1500,00
No single global standard governs refuge bay design, and the collieries surveyed differ widely in construction, location, equipment and operating practice, which made ranking them impractical. Areas needing attention were identified in design, construction and maintenance of the facilities that keep people alive until rescue, drawn against local law and overseas practice.