SINKING OF SHAFTS IN WATER-BEARING STRATA CHARACTERISED BY LOW STRENGTH – BY PROVIDING AS AN EXAMPLE THE 1-BZIE SHAFT SINKING PROJECT IN POLAND

World Mining Congress
This Paper has been prepared to be presented at the 23rd World Mining Congress & Expo – Montreal 2013. It presents the idea how to carry out the shaft sinking operation, going through highly water-bearing and very weak rock strata, giving as an example one specific shaft sinking project which is being executed for one of the Polish collieries by our Shaft Sinking Company
Keywords: Shafts; Shaft linings; Shaft sinking; Rock; Rocks; Till; Waters; Water; Sand; Construction;
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