Use Of Database In Ground Control To Identify Weightings And Water Inflows

Xiao, G. C.
Organization: International Conference on Ground Control in Mining
Pages: 7
Publication Date: Jan 1, 1990
A database, incorporating historical data from British mines, to study the factors affecting inflows from proximate aquifers into longwall workings, showed that a main casual factor was the immediate roof strata lithology. When this comprised principally stronger sandstone, there was a tendency for periodic inrushes associated with face weighting. This phenomenon is explained by the collection of water in bed sepa¬ration cavities, where free water connected to a high pressure head aquifer source, may be trapped.
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