Generally it would be where you would drill a hole from outside into
the seam or projected working area, so that a pipe can be inserted
with a gradient that flows the water out of the mine and away from
the main haulways to stop interference. it also allows you to drain
that part of the workings before you get there
Dave
>Hi All,
>
> Can anyone explain what pipe drainage was or is in lead
>mines of the Yorkshire Dales. The norm was to let the water drain
>freely out of the level. Two levels which I visited recently had a
>channel cut along the right hand side of the level entrance, about
>18 inches deep by 12 inches wide. This makes the level 5 feet wide
>and 6 feet high, (Horse Levels) both are in Wensleydale. I have not
>come across this practice in Swaledale or Arkengarthdale.
>
>Regards
>
>Barry
--
David A. Summers
Curators' Professor of Mining Engineering
Adjunct Professor of Nuclear Engineering
Director
Rock Mechanics and Explosives Research Center
University of Missouri-Rolla,
Rolla, MO 65409-0810
"fools talk, wise men listen." (a variant of Prov 12:23)
phone: (573) 341 4314
FAX: (573) 341 4368
related web pages
A growing selection of Dr. Summers' papers are being put on the Web
and can be accessed through the Bibliography
http://www.umr.edu/~rockmech/faculty/biography.html
Rock Mechanics http://www.umr.edu/~rockmech/
Waterjet Lab: http://www.umr.edu/~waterjet/
UMR Stonehenge: http://www.umr.edu/~stonehen/
Personal: http://www.umr.edu/~rockmech/data/Summers.html
Mining Eng. http://www.umr.edu/~mining/
Waterjet Assoc http://www.wjta.org/
International Waterjet Society: http://www.iw.uni-hannover.de/iswjt/
Next American Waterjet conference: http://www.wjta.org/conference.htm
Next International Waterjet Conference (Provence, 2002)
http://www.bhrgroup.co.uk/confsite/jt02home.htm
|