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Fractures and associated networks can significantly affect subsurface fluid flow. Subsurface fluid flow is of greatest significance in rocks with favourable aquifer characteristics. In this study, the Hawkesbury Formation, a natural groundwater reservoir is analysed to characterise fracture networks. Longwall mining under the Hawkesbury Formation is common in the Southern Sydney Coalfields region, NSW. Therefore, the Hawkesbury Formation is subject to altered fracture networks due to the increased stress and brittle nature of the Formation. Previous literature focuses heavily on the primary porosity and permeability of the Hawkesbury Formation with little regard for the influence fracture and associated fracture parameters have on subsurface fluid flow. This is because characterising groundwater flow in fractured rock aquifers is difficult. However, this study highlights the need to better understand how flow yields are likely to change with changes to fracture networks. Through the an ....

New South Wales , Hawkesbury Formation , Southern Sydney Coalfields , Tahmoor South , Racture Spacing , Ed Thickness , Racture Porosity , Hydraulic Conductivity ,