R1500,00
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Improved Utilization of Underground Coal Reserves
2016
Working reference on high extraction methods, from stooping and rib pillar extraction to auger, punch, longwall and backfilling, drawn from South African colliery experience for mine planners.
What this report foundAbout 3.19 billion tons of coal now sits underground in pillars, growing by roughly 110 million tons a year under current bord and pillar practice.
R1500,00
About 3.19 billion tons of coal now sits underground in pillars, growing by roughly 110 million tons a year under current bord and pillar practice. Pillars with a safety factor of about 1.8 or higher can be extracted successfully, and 1.5 is permissible in thin seams where the pillar width to height ratio exceeds 10.
Create Sedimentological and Structural Models to Assist in Identifying Geological Features That Impact on Mining
2001
Regional geology mapped in three dimensions from borehole data supplied by three mining groups, built for mine geologists and planners assessing seam disruption before layout design.
What this report foundA three dimensional model of the northern Witbank and Highveld coalfield was built from more than 1100 borehole logs, with strata sorted into 13 major...
R1500,00
A three dimensional model of the northern Witbank and Highveld coalfield was built from more than 1100 borehole logs, with strata sorted into 13 major groupings and surface topography taken from satellite elevation data. It runs on open source visualisation software rather than a commercial package. Delays limited coverage to about a quarter of the coalfield.