A shaft is a vertical or inclined excavation giving access to a mine or other underground workings; the inclination should not be less than about 40°; otherwise the correct term is Drift (inclined) or Adit (horizontal). Most shafts are sunk from the surface, but interior shafts are frequently used in large mines, for extending the workings without interfering with the main shaft operations or to reach depths or locations beyond easy reach of the main shaft. It is customary to restrict the term interior Shaft to an opening provided with hoisting facilities; otherwise such an opening is called either a Winze or a Raise , according to whether the direction of advance is downward or upward (Cornish, 1967). Compound shafts start vertically from the surface and then change gradually to a steep inclination, usually to follow the direction of an ore body; hoisting is continuous through the transition. Subvertical Shaftsare vertical interior shafts usually in close association...
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Pipeline Corridor Evaluation; Rapid Excavation and Tunneling; Tunnels, Tunneling; Urban Tunnels and Subways.
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© 1984 Van Nostrand Reinhold Company Inc.
Lancaster-Jones, P.F.F. (1984). Shaft sinking . In: Finkl, C. (eds) Applied Geology. Encyclopedia of Earth Sciences Series, vol 3. Springer, Boston, MA. https://doi.org/10.1007/0-387-30842-3_62
DOI: https://doi.org/10.1007/0-387-30842-3_62
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-442-22537-7
Online ISBN: 978-0-387-30842-5
eBook Packages: Springer Book Archive
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