Mehnerschacht

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The Mehnerschacht was a weather shaft in the coal field of the Döhlen basin in the area of ​​the city of Freital in Saxony . It was used to ventilate the mine field on the left of the Weißeritz , which belonged to the Zauckerode Royal Coal Works .

history

Between the Oppel shaft and the Döhlener art shaft lying workings were weathered by an old days route. The maintenance of this mine, which was driven when the first seam collapsed , became increasingly difficult. It was therefore decided to dig a new weather shaft between the two shafts. As a Mehnerschacht, the shaft set at 178.76 m above sea level was sunk between February 15, 1850 and May 17, 1850 at a depth of 33.0 m. From a depth of 20.70 m, the first seam was drilled with a thickness of 4.00 meters. The natural flow of weather in the shaft was supported in summer by hanging fire buckets . As the mines went deeper, this ventilation was soon no longer sufficient, and a weather stove was installed in 1854 . The chute was further geteuft to 36.8 meters and with the footwall connected ascended the seam lower mountain range 28th In 1861 this ventilation was no longer sufficient and the Mehnerschacht was fitted with a fan . There is no information about the type of fan built from October 23, 1861. The fan went into operation on May 5, 1862. After the fan shaft broke in 1863, a new fan was built in the company's own forge according to plans by Freiberg master craftsman Friedrich Wilhelm Schwamkrug . It was only necessary to operate the fan in summer to support the natural flow of weather . In order to keep the shaft permanently in operation, the full grain timbering was replaced by a shaft wall. In 1873 the old fan was replaced by a Guibal fan with a diameter of seven meters and a width of 1.80 meters. It had an output of 850 cubic meters of air per minute.

After the flood disaster of 30./31. July 1897, as a result of which the Döhlen weather shaft lost its function, the reserve Mehn shaft took over the ventilation of the southern mine workings.

From 1902, the Königin-Carola-Schacht took over the ventilation of the more and more south-moving mines. The Mehnerschacht was shut down but kept in reserve. It served as an escape route until 1959 and was temporarily used to ventilate the 28th lower mountain route.

literature

  • Eberhard Gürtler, Klaus Gürtler: The hard coal mining in the Döhlen Basin part 2 - shafts on the left of the Weißeritz , house of the home Freital, 1984
  • Saxon State Office for Environment and Geology / Sächsisches Oberbergamt (Hrsg.): The Döhlener basin near Dresden. Geology and Mining (=  mining in Saxony . Volume 12 ). Freiberg 2007, ISBN 3-9811421-0-1 , p. 302-304 .
  • Yearbook for mining and metallurgy in the Kingdom of Saxony. 1906

Coordinates: 51 ° 0 ′ 49.8 ″  N , 13 ° 38 ′ 52 ″  E