Weather curtain

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A weather curtain , even weather curtain , weather cloth or weather rag called, is a weather-technical structure, which in mining underground is used. Weather curtains are used instead of other weather-technical structures only for provisional regulation of the weather train . They are used at the operating points where no absolutely tight weather seal is required.

Structure and use

Weather curtains are made from various flexible materials. Often this comes of canvas used. The cloth is either stretched over a frame or attached to a wooden strip attached to the extension like a curtain. If necessary, another wooden strip is attached to the lower end of the linen cloth, which then tightens the cloth. Depending on the mining region, either unpaved or tarred sailcloth is used. The sailcloth used for this purpose is also known as a weather sheet. In the English mining industry, tarred canvas was favored, in German mining, especially in Saar mining, unpaved canvas was used. This was due to the fact that tarred canvas, because of its strong smell, makes it difficult to perceive gases with a similar smell, such as fire gases. The disadvantage of using sailcloth is that the sailcloth wears out very quickly during operation and then has to be replaced. Instead of these materials, webbing covers that have been discarded and cut into suitable pieces are used. These are at either the roadway support mounted traverses from U-iron fastened or tensioned steel wires. Weather curtains are often used on drifts with heavy mining impacts . The use of weather curtains is particularly advantageous where weather doors are not practical due to the high pressure . Weather curtains are also used to separate fresh weather and outweather , in particular to divert partial weather flows. In addition, the respective pit structures are sealed against creeping weather by the weather curtains .

Individual evidence

  1. ^ A b c d Walter Bischoff , Heinz Bramann, Westfälische Berggewerkschaftskasse Bochum: The small mining encyclopedia. 7th edition, Verlag Glückauf GmbH, Essen 1988, ISBN 3-7739-0501-7 .
  2. ↑ a b c Albert Serlo: Guide to mining science. Second volume, fourth improved edition, published by Julius Springer, Berlin 1884, pp. 429–430.
  3. ↑ a b Versuchsgrubengesellschaft mbH (Hrsg.): Investigations on the spread and composition of explosion plumes Final report on the research project, Research Agreement No. 7205-12 / 1/004, Dortmund 1979, pp. 12-13.
  4. ^ A b Carl Hellmut Fritzsche: Textbook of mining science. First volume, 10th edition, Springer Verlag, Berlin / Göttingen / Heidelberg 1961, p. 720.
  5. ↑ Horst Roschlau, Wolfram Heinze, SDAG Wismut (Hrsg.): Knowledge storage mining technology. 1st edition. German publishing house for basic industry, Leipzig 1974, p. 125.
  6. ^ A b Fritz Heise, Fritz Herbst: Textbook of mining science with special consideration of hard coal mining. First volume, fifth improved edition, published by Julius Springer, Berlin 1923, p. 560.
  7. ^ A b Albert Serlo: Guide to mining science. Second volume, 3rd edition, published by Julius Springer, Berlin 1878, p. 330.
  8. ^ A b Tilo Cramm, Joachim Huske: Miners' language in the Ruhr area. 5th revised and redesigned edition, Regio-Verlag, Werne 2002, ISBN 3-929158-14-0 .
  9. ^ Emil Stöhr, Emil Treptow: Basics of mining science including processing. Spielhagen & Schurich publishing house, Vienna 1892, p. 305.