PROJECT 7: POWER STATION
BEAL was appointed to undertake the conceptual design of a new ash dam that is sustainable and environmentally friendly. The proposed design consists of a barrier and drainage system which will be directed towards a return water dam. A geotechnical study was also conducted.
The Power Station in Mpumalanga, South Africa, is a coal-fired power plant.
Coal from the coal mine directly feeds the station. In addition to feeding the South African grid, the coal mine, along with the Power Station, also feeds an Aluminium smelter in Mozambique via 400 kV transmission lines. The smelter consumes around 950 MW. The Power Station was the first modern, large generation station.
BEAL (Pty) Ltd was appointed to undertake the conceptual design of an additional ash dam at a Power Station as well as to conduct a geotechnical investigation. The aim was to minimize the long-term impact of coarse and fine ash during and after dumping, and also provide a good foundation for future rehabilitation.
A geotechnical investigation was performed and the proposed design consists of a barrier and drainage system which will be directed to a return water dam. The design includes toe drains and main drains, starter walls, diversion and solution trenches, and a silt trap.