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The use of the Geographical Information Systems (GIS)-based weights-of-evidence method for assessing mining induced rockfall

Conference Paper


Abstract


  • Coal mining operations can impact on various types of surface infrastructure or natural features, including cliff-lines, steep slopes and natural watercourses. Longwall mining leads to a subsidence depression due to the changing geometry of the mined out area. The current regulatory process for managing subsidence in New South Wales (NSW) involves the preparation of a Subsidence Management Plan (SMP). This paper demonstrates the use of a Weights of Evidence (WofE) technique applied within a Geographical Information Systems (GIS) environment to predict potential areas for rockfalls along cliff-lines in the NSW Southern Coalfield. The WofE is a 'data-driven' method that can be used to predict subsidence impacts prior to mining. The WofE method was applied to ten known rockfalls along the Cataract River to evaluate the reduced impact of not mining within 50 m of cliff-lines along the Nepean River. There is significant reduction of probabilities of rockfall occurrence when mining is avoided within 50 m of cliffs.

Publication Date


  • 2006

Citation


  • Zahiri, H., Brassington, G., & Baafi, E. (2006). The use of the Geographical Information Systems (GIS)-based weights-of-evidence method for assessing mining induced rockfall. In Australasian Institute of Mining and Metallurgy Publication Series (pp. 283-287).

Scopus Eid


  • 2-s2.0-58049169844

Start Page


  • 283

End Page


  • 287

Abstract


  • Coal mining operations can impact on various types of surface infrastructure or natural features, including cliff-lines, steep slopes and natural watercourses. Longwall mining leads to a subsidence depression due to the changing geometry of the mined out area. The current regulatory process for managing subsidence in New South Wales (NSW) involves the preparation of a Subsidence Management Plan (SMP). This paper demonstrates the use of a Weights of Evidence (WofE) technique applied within a Geographical Information Systems (GIS) environment to predict potential areas for rockfalls along cliff-lines in the NSW Southern Coalfield. The WofE is a 'data-driven' method that can be used to predict subsidence impacts prior to mining. The WofE method was applied to ten known rockfalls along the Cataract River to evaluate the reduced impact of not mining within 50 m of cliff-lines along the Nepean River. There is significant reduction of probabilities of rockfall occurrence when mining is avoided within 50 m of cliffs.

Publication Date


  • 2006

Citation


  • Zahiri, H., Brassington, G., & Baafi, E. (2006). The use of the Geographical Information Systems (GIS)-based weights-of-evidence method for assessing mining induced rockfall. In Australasian Institute of Mining and Metallurgy Publication Series (pp. 283-287).

Scopus Eid


  • 2-s2.0-58049169844

Start Page


  • 283

End Page


  • 287