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Determining The Cotnrols For Strata Gas And Oil Duistribution Within Sandstone Reservoirs Overlying The Bulli Seam, M. Armstrong, P. Hatherly, S. Thomson
Determining The Cotnrols For Strata Gas And Oil Duistribution Within Sandstone Reservoirs Overlying The Bulli Seam, M. Armstrong, P. Hatherly, S. Thomson
Resource Operators Conference
The continuing and effective management of gas within the sandstones overlying the Bulli seam mines of BHP Billiton Illawarra Coal is required to ensure safe and productive mining operations. Recent surface exploration has also detected the presence of oil accumulations in these sandstones which have the potential to impact on future mining operations. Some of these hydrocarbons are located within the longwall relaxation zone of the overlying strata and, as a result, can migrate to the goaf and active workings subsequent to extraction. A number of new exploration techniques, which are in common use by the petroleum industry, have been …
A Laboratory Facility To Study The Behaviour Of Reinforced Elements Subjected To Shear, L. Mahony, P. Hagan
A Laboratory Facility To Study The Behaviour Of Reinforced Elements Subjected To Shear, L. Mahony, P. Hagan
Resource Operators Conference
This paper outlines the design, construction, commissioning and subsequent investigation of a shear test laboratory facility at the University of New South Wales (UNSW). The facility was developed with the financial support of ACARP to understand the impact of shear loading conditions on the performance of reinforcement elements such as rockbolts and cablebolts. While it is acknowledged that shear loading commonly occurs, progress towards a better understanding of its impact has been limited due to issues in modelling behaviour. Preliminary testwork indicates that many of these issues have been overcome in the design of the current facility. The facility is …
Numerical Modelling Of Mining Induced Subsidence, W. Keilich, Ross W. Seedsman, N. Aziz
Numerical Modelling Of Mining Induced Subsidence, W. Keilich, Ross W. Seedsman, N. Aziz
Resource Operators Conference
A methodology of subsidence prediction using the Distinct Element code UDEC has been developed as an alternative for subsidence modelling in the Southern Coalfield, New South Wales, Australia. The models have been validated by comparison with empirical results and observed caving behaviour. At this stage, modelling capability is limited to flat lying terrain. It is planned to apply the methodology to areas of high topographical relief to investigate the mechanics of valley closure.