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Rösche
A ''Rösche'' is a German mining term that refers ''inter alia'' to a gullet (''Wasserseige''), a trench for draining water in the lower part of a mine gallery. In order to keep the actual gallery entrance (''Stollenmundloch'') free and guard against backflooding the ''Röschen'' were, in many cases, extended to below the entrance or led even further away, underground, to the nearest stream or river. By contrast the term ''Rösche'' was also used to describe the channels or "leats" through which the driving water for mining equipment was led into the pit (''Aufschlagrösche'' or driving water leats) or out of the pit (''Abfallrösche'' or drainage leats). Unlike a gallery, a leat will have a gentle incline into the pit. Also referred to as a ''Rösche'' are the tunnel-like sections of mining ditch (''Kunstgraben A ''Kunstgraben'' is a type of man-made Canal, water channel that was once used by mines to drive the water wheels needed for power, mine drainage and a host of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Harz Water Tunnels
The Upper Harz Water Tunnels (, ) are part of the Upper Harz Water Regale - a network of Kunstteich, reservoirs, Kunstgraben, ditches, tunnels and other structures in the Harz mountains of central Germany (geography), central Germany. The German term ''Wasserlauf'' refers to the underground element (i.e. the tunnels) of the network of watercourses used in the historic silver mining industry of the Upper Harz. This network of ditches and tunnels was used to supply the mines with headrace waters for their water wheels from the 16th century onwards. In the system of the Upper Harz Water Regale there are over 35 such tunnels with a total length of about . Construction Although explosives were already in use in the 17th century in the mines of the Upper Harz, tunnels continued to be hewn out by hand, that is with hammer and chisel (tools), hammer and chisel for much longer. The reason was that there were difficulties in determining the right amount of gunpowder and fears that tunnel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
