Investigations into the Predictability of Volumes and Characteristics of Mine Waters in Coal Seams of the Sydney Basin

Anderson JDC,
Organization: The Australasian Institute of Mining and Metallurgy
Pages: 15
Publication Date: Jan 1, 1988
Opencast Lignite Mining requires topwall strata of seams to be fully depleted and footwall aquifers sufficiently depressurized. To prevent a spread of the cone of depression into protected wetlands some distance away, alternatives had been investigated such as closing water works, underground slurry wall barriers and recharge by infiltration. As a result of these investigations, the infiltration method has been chosen and in a first phase during the next decade it will utilize as much as 55 x 106 m3/year. Using this approach, the survival of the wet lands is assured.
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