All posts in Rock Properties

Flow and Transport Properties of Fractured Bedrock Aquifers in the Vertical Direction

On 11th March 2015, Dr. Novakowski from the Dept. of Civil Engineering, Queen’s University in Canada presented a technical talk to IAH NSW on the results of studies conducted at two fractured bedrock field sites. A copy of this presentation is available here.

Flow and Transport Properties of Fractured Bedrock Aquifers in the Vertical Direction

IAH_NSW_11Mar2015

Assessing the ability of an unconfined bedrock aquifer to transmit infiltrating water and contaminants vertically downwards has long been a difficulty for practising hydrogeologists.

Dr. Novakowski has more than 25 years experience in the characterisation and modelling of groundwater flow and contaminant transport in both crystalline and sedimentary fractured rock.

IAH_NSW_11Mar2015

The studies, in gneissic and sedimentary rock terrain, included the development of pumping and pulse interference methods for estimation of vertical hydraulic conductivity, and the completion of tracer experiments from a surficial source to depth in a pumped well for the estimation of transport porosity.

The results point out the significant importance of vertical fracture geometry, spacing and aperture in determining bulk vertical hydraulic conductivity and vertical transport porosity, and the difficulty we have in estimating these properties. In particular, the methods typically used in porous media to estimate vertical hydraulic properties, such as the pumping test, fail in fractured bedrock settings due to uncertainty in the estimates for specific yield and vertical specific storage

2014 Darcy Lecture in Groundwater Science (NSW)

IAH_NSW_19Feb2015

Dear IAH friends,

IAH NSW and their sponsors proudly present the 2014 Darcy Lecture in Groundwater Science, with a presentation by Dr Dorthe Wildenschild, Associate Professor at the School of Chemical, Biological and Environmental Engineering at Oregon State University.

Associate Professor Wildenschild will be talking about “What Happens in the Pore, No Longer Stays in the Pore: Opportunities and Limitations for Porous Media Characterisation and Process Quantification Using X-ray Tomography”

Please join us on Thursday 19th February at 5:30pm for a 6pm start (Parsons Brinckerhoff offices, Ernst and Young Centre, Level 26 680 George Street, Sydney). For more information on the topic and the venue click here.