For themodelling, a ‘mine footprint’ represents the area of mining only. That is, the footprint involves only the open-pit or longwall panels, and does not include site facilities or other changes at the surface. Thus, the mine footprints for groundwater modelling are not always the same as those used in the modelling, which include all areas where surface water drainage is disrupted, such as from site facilities, water storages, drainage , spoil heaps and roads (see companion product 2.1-2.2 ( ), companion product 2.3 ( ) and companion product 2.6.1 ( ) for the Namoi subregion). Similarly, the spatial extent of the CSG development is the location of the extraction but does not include the site works and pipelines.
Mine workings, whether they are open-cut or longwall, are represented by georeferenced polygons, which locate the ‘mine’ cells within the plan model grid. As stated in Section 220.127.116.11.3.2, the plan mesh conforms, where possible, to the mine polygons.
Mine footprints were obtained from a number of sources, including existing digital data from some mining companies and the NSW Department of Trade and Investment, and footprints digitised specifically for the project from Landsat TM images of open-cut mines or from maps published in mine environmental impact statements (EISs). Details of the source data can be found in Section 2.1.6 of companion product 2.1-2.2 for the Namoi subregion ().
In all, 12 mine footprint polygons and 1 CSG development footprint were used to define the coal resource development areas for the(CRDP) in the for groundwater modelling. The full extent of mining footprints is shown in Figure 33 in Section 2.3.4 of companion product 2.3 for the Namoi subregion ( ).
Product Finalisation date
- 18.104.22.168 Methods
- 22.214.171.124 Review of existing models
- 126.96.36.199 Model development
- 188.8.131.52 Boundary and initial conditions
- 184.108.40.206 Implementation of the coal resource development pathway
- 220.127.116.11 Parameterisation
- 18.104.22.168 Observations and predictions
- 22.214.171.124 Uncertainty analysis
- 126.96.36.199 Limitations
- Currency of scientific results
- Contributors to the Technical Programme
- About this technical product