Coaltech Research Association

The Collection, Treatment and Utilization of Water Accumulated in the Coal Mines Located in the Upper Olifants River Catchment

by JP Maree, GJ van Tonder, AM van Niekerk and C Naidoo | March 2000

R1500,00

Description

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Rehabilitation of Mined Land Irrigation of Pastures with Gypsiferous Mine water

2011

Pasture and animal production work on rehabilitated mine land under mine water irrigation, joining agronomy and animal science, for rehabilitation and closure planners.

What this report foundGrazing trials on tall fescue pasture irrigated with gypsiferous mine water on rehabilitated mined land, run over several seasons.

R1500,00

R1500,00

What this report found

Grazing trials on tall fescue pasture irrigated with gypsiferous mine water on rehabilitated mined land, run over several seasons. The work covers steer stocking rates, dry matter intake by cattle, and the factors that control pasture quality and intake, among them nitrogen fertilisation, stage of growth, sward structure and grazing intensity. Findings are reported study by study.

Determine Possible Means to Conduct Large Scale Frictional Ignitions Tests, and the Value of These to Coaltech

T F Ngobeni

2017

A scoping exercise based on technical enquiries to mine safety organisations and discussions at an international conference, aimed at rock engineers and safety practitioners weighing test facility investment.

What this report foundNo operating full scale frictional ignition test facility was found anywhere in the world, and building one was judged expensive, impractical and unlikely to...

R1500,00

R1500,00

T F Ngobeni

What this report found

No operating full scale frictional ignition test facility was found anywhere in the world, and building one was judged expensive, impractical and unlikely to justify its cost against laboratory scale testing. Effort should instead go to small scale laboratory equipment using South African rocks, and to expanding geological data such as silica distribution and petrographic analysis.

Demonstrate the efficiency of UAV-GPR for assessment of rehabilitation sites and detection of subsurface cavities

Michael van Schoor

2023

Field trials at two South African collieries comparing drone mounted ground penetrating radar against ground based surveys, for measuring rehabilitation soil thickness and locating shallow voids. For rehabilitation teams.

What this report foundGround based radar mapped rehabilitation soil profiles well enough to replace much of the auger sampling normally needed, and a 100 MHz system picked out...

R1500,00

R1500,00

Michael van Schoor

What this report found

Ground based radar mapped rehabilitation soil profiles well enough to replace much of the auger sampling normally needed, and a 100 MHz system picked out anomalies at about 5 to 6 m depth that were likely old mining voids and related subsidence. Penetration below roughly 6 m needs lower frequencies, which cost resolution and require larger antennas.

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