Double shaft system

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Bernburg salt mine, Bernburg and Gröna shafts with daytime facilities
WISMUT branch in Königstein, double shaft system shaft 388/390

A mine is referred to as a double shaft system in which two shafts have been created in the immediate vicinity (<100 m).

Advantages and disadvantages

The advantages of a double- shaft system are lower mining losses due to the common safety pillar , the concentration of the daily systems on one location and the associated synergy effects. The downward trend in weather is a disadvantage , which is why more recently double-shaft systems have also been supplemented by weather shafts or boreholes located on the field boundary.

Examples of double shaft systems in Germany