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Coupled Air-Water Flow Through Fractured Sandstones, Buddhima Indraratna, P Ranjith
Coupled Air-Water Flow Through Fractured Sandstones, Buddhima Indraratna, P Ranjith
Faculty of Engineering - Papers (Archive)
In two-phase flow within a rock mass, where both air and water phases flow together, the accurate flow measurement of each individual phase is important in numerical analyses. The increased quantity of water phase decreases the relative permeability of the air phase, and vice versa. The relative permeability is important to analyse the risk of groundwater inundation and gas outbursts particularly in underground excavations. Two-phase flow (i.e., water and air) behaviour through naturally and artificially fractured standard rock cores is investigated using the high-pressure triaxial equipment developed by the authors. Findings of this study show that the individual flow rate …
Case History Analysis Of Mine Water Pollution In New South Wales, Muttucumaru Sivakumar, S Morton, Raghu N. Singh
Case History Analysis Of Mine Water Pollution In New South Wales, Muttucumaru Sivakumar, S Morton, Raghu N. Singh
Faculty of Engineering - Papers (Archive)
In this paper, problems associated with mine waste water discharge quality in two mines are examined in the environmentally sensitive regions in NSW, Australia. In the first mine the problem of controlling and treating surface run-off from a large coal mine site is duscussed. Then study involved sampling and analysis of mine wastewater during various weather conditions over a period of six months. The samples were analysed for a range of physical and chemical water quality parameters. The study indicated that during minor storms, the mine wastewater treatment system worked effectively, but during a moderate to major storm, the treatment …