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@PHDTHESIS{Kratz:713427,
author = {Kratz, Thorsten},
othercontributors = {Martens, Per Nicolai and Nienhaus, Karl},
title = {{E}ntwicklung pneumatischer {L}ade- und {F}ördersysteme
für das konventionelle {S}chachtabteufen},
school = {RWTH Aachen University},
type = {Dissertation},
address = {Aachen},
publisher = {Shaker},
reportid = {RWTH-2018-01154},
isbn = {978-3-8440-5668-6},
series = {Berichte aus dem Bergbau},
pages = {1 Online-Ressource (VI, 204 Seiten) : Illustrationen},
year = {2017},
note = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen
University 2018; Dissertation, RWTH Aachen University, 2017},
abstract = {Shafts provide a vertical and an inclined connection from
surface to underground working areas, e.g. for mining and
tunnel construction operations. The selection criteria of a
suitable sinking method are, beside occupational safety, the
sinking performance and sinking costs. The frequently
applied conventional shaft sinking method, using drilling
and blasting techniques, allows almost any shaft geometry
and challenging ground conditions can be sunk through. The
analysis of the world wideshaft sinking operation confirms
the special importance of the conventional shaft sinking
technique. Nevertheless further developments concerning
sinking performance are only rarely noticeable over the last
decades. At the beginning, this thesis presents the state of
the art of the conventional sinking technology. These
compiled findings are used to develop a proprietary
performance and cost model for conventional shaft sinking.
The model is used for the analysis of parameters influencing
sinking performance and sinking costs. It is shown that an
increasing depth and a larger shaft diameter lead to
increasing costs of a sinking operation. In contrast, longer
blasting rounds enable an increasing sinking performance and
decreasing sinking costs. Long blasting rounds combined with
wide shaft diameters generate a large-volume muckpile.
Hence, mucking and hoisting operation have a relevant impact
on the cycle time respectively on the sinking performance
and costs. The parameters influencing mucking and hoisting
performance were exposed and analyzed to create the basis
for the development of two concepts of pneumatic loading
technology for the conventional shaft sinking method: the
suction kibble and the suction stage. Finely grained rock
that remains at the shaft bottom after mechanical mucking
can be loaded by the pneumatic suction kibble, providing a
higher mucking performance for this working section. The
suction stage is able to load a whole blasting round with a
continuously high mucking performance and, additionally,
improves the hoisting operation. Both pneumatic concepts
reduce the needed manpower in comparison to conventional
mucking and hoisting operation. The parallel operation of
subsequent working steps like the installation of primary
rock support is possible. In addition, by avoiding partly
dangerous working steps, the implementation of pneumatic
loading concepts improve occupational safety. Despite
relatively higher investment and operation costs of the
pneumatic suction systems, the increasing sinking
performance can lead to lower sinking costs.},
keywords = {Pneumatische Förderung (gnd) / Stand der Technik (gnd) /
Förderleistung (gnd) / Absaugen (gnd) / Prozessoptimierung
(gnd) / Schachtabteufen (gnd)},
cin = {510000 / 511110},
ddc = {620},
cid = {$I:(DE-82)510000_20140620$ / $I:(DE-82)511110_20140620$},
typ = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
doi = {10.18154/RWTH-2018-01154},
url = {https://publications.rwth-aachen.de/record/713427},
}
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