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Browsing by Author "Roberts, DP"

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  • Roberts, DP; Roberts, MKC; Jager, AJ (South African Inst Mining Metallurgy, 2005-05)
    The stoping of platinum orebodies in the Bushveld has in the past been accomplished by using in-stope pillars to ensure stability of the workings. In the future, the use of continuous mining machines to mine the platinum ...
  • Roberts, DP; Van der Merwe, JN; Canbulat, I; Sellers, EJ; Coetzer, S (2002-09)
    The primary goal of this project was to determine the accuracy and validity of the Tributary Area Theory (TAT) and to provide better estimates of pillar load using numerical modelling and other tools. Literature review ...
  • Roberts, DP; Roberts, MKC; Acheampong, E (2002-03)
    The aim of this project was to determine whether the introduction of short bolts into a stope hangingwall would increase the stability of the hangingwall beam. A simple physical 1/10th hangingwall model was constructed out ...
  • Watson, BP; Mosomane, SM; Kuijpers, JS; Roberts, DP (Southern African Institute of Mining and Metallurgy, 2008-08)
    The first crush pillars on the Bushveld platinum mines were introduced at Union Section in 1978. Before the introduction of crush pillars, serious problems were experienced when stoping advanced to a point 30 m to 40 m on ...
  • Ogasawara, H; Nakatani, T; Durrheim, RJ; Naoi, M; Yabe, Y; Moriya, H; Hofmann, GF; Stander, C; Roberts, DP; de Bruin, P; Oelofse, J; Kato, H; Cichowicz, A; Birch, D; Ngobeni, D; Milev, A; Kgarume, T; Satoh, T; Horiuchi, S; Kawakata, H; Murakami, O; Yoshimitsu, N; Ward, AK; Wienand, J; Lenegan, P; Yilmaz, H; Mngadi, S; Piper, PS; Clements, TN; Nakao, S; Okubo, M; Ishii, H; Visser, AV (Australian Centre for Geomechanics, 2014-09)
    A multi-disciplinary study of the response of the rock mass to mining and mining-induced earthquakes has been conducted in six gold mines in South Africa at sites deeper than 3 km, or with equivalent stress. More than 80 ...