D. J. Stolberg's research while affiliated with The University of Queensland and other places

Publications (9)

Article
The reclamation of potentially acid forming waste rock is site specific, being a function, among other factors, of the rock types, the dumping and storage method employed and, importantly, the climatic setting. The "store/release" cover developed to manage acid rock drainage from mineralised waste rock dumps at Kidston Gold Mines' open pit operatio...
Article
As part of research investigating cover systems on hypersaline tailings deposits in the arid climate of the Eastern Goldfields region in Western Australia, different cover trials have been monitored for salinity up-take into the cover. Among the parameters monitored were moisture content, suction, salinity and pH in the covers and underlying hypers...

Citations

... We expect the sensor location and orientation errors to be similar to those of the pose estimator for the laser and the radar, although we have no reliable means of confirming this other than measurement repeatability. To better characterise the accuracies of the constructed digital terrain map, comparison of the face profile at a distance of 15m to 40m from the centre of the shovel generated by the lasers was made to a commercially available 3D measurement system based on an independent sensing technology, the stereo vision solution provided by SiroVision [Williams et al. 2005] as shown in Figures 8 and 9.. A histogram showing the number of points versus distance error between the point clouds generated by a SICK mounted on the shovel and that provided by the SiroVision solution is presented inFigure 10. ...
... One method of limiting acidic drainage is to minimize ingress of water and oxygen by capping the waste. A variety of cap designs have been used, including earthen 'store-andrelease' caps (Waugh and Petersen, 1994;Bews et al., 1997;Reisinger et al., 2001;Frechette and Bergstrom, 2002;Wels et al., 2002;Orton, 2002;Waugh, 2002), capillary barriers protecting a moist fine-textured oxygen barrier (Nicholson et al., 1989;Yanful, 1993;Pasha, 1996;Aubertin et al., 1997;Tibble and Nicholson, 1997;Ricard et al., 1999), resistive barriers employing compacted fine-grained layers (Thiers et al., 1986;Jones and Blanke, 1986;Morris and Fraley, 1989;Hebert, 1992;Wesely et al., 1996;Williams et al., 1997Williams et al., , 2002Woyshner and Swarbrick, 1997;Kowalewski et al., 1998;Reisinger et al., 2001;Fernandes and Franklin, 2002;Almeida et al., 2002;Ayers et al., 2002) and multilayer composite (MLC) caps comprised of earthen materials and polymeric barrier layers (Foth and van Dyke, 1995;Shuri et al., 1998;Gallinger, 1999;Kim and Benson, 1999;Almeida et al., 2002). ...
... These cover systems are known as alternative covers, evapotranspiration (ET) covers, water balance, or store-and-release (SR) covers; this terminology (SR cover) will be used throughout this paper. The technology of SR covers has been applied with success to several mine sites such as Kidston Gold Mines (Australia) and Barrick Goldstrike Mines (Nevada, US) to control acid mine drainage (AMD) generation from sulfidic mine wastes (Zhan et al., 2001(Zhan et al., , 2006Williams et al., 2006). The concept of this approach is to control water percolation by using a moisture-retaining layer (MRL) that acts as a sponge or a reservoir by storing water during precipitation events, and then releasing it back to the atmosphere by evaporation (e.g., Rock et al. 2012, Bossé et al., 2013. ...
... The reduced hydraulic conductivity of the desiccated crust limits the depth of desiccation and maintains the underlying tailings wet and soft. Stolberg and Williams (2006) described the results of a laboratory tailings column experiment conducted on fresh hypersaline, Western Australian, hypersaline, Mt Keith nickel sulfide tailings in a Perspex column 2 m high by 300 mm in diameter (see Figure 24). The column was instrumented along its height with 10 sets of sensors to measure volumetric water content and matric suction. ...
... Also, a limited number of studies have only focused on waste dumping tactics (Dincer 2001;Williams et al. 2008;Topal and Williams 2009;Li et al. 2013). To diminish the undesirable environmental effects of PAF materials during the open-pit mining operation, the encapsulation of the PAF with non-harmful materials is a competent method (Williams et al. 2006). Implementing this technique in the planning process of an open-pit mine, waste dumping would be planned in such a way that PAF materials are enfolded with the NAF ones. ...