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Sixth International Mining Geology Conference

Conference Proceedings

Sixth International Mining Geology Conference

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The Use of the Geographical Information Systems (GIS)-Based Weights-of-Evidence Method for Assessing Mining Induced Rockfall

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)._x000D_
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._x000D_
FORMAL CITATION:Zahiri, H, Brassington, G and Baafi, E, 2006. The use of the geographical information systems (GIS)-based weights-of-evidence method for assessing mining induced rockfall, in Proceedings Sixth International Mining Geology Conference, pp 283-288 (The Australasian Institute of Mining and Metallurgy: Melbourne).
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  • Published: 2005
  • PDF Size: 1.2 Mb.
  • Unique ID: P200606031

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