Type of Document Master's Thesis Author Basu, Kohinoor Author's Email Address kbasu@vt.edu URN etd-0898-121736 Title Feasibility of an Integrated Thin Seam Coal Mining and Waste Disposal System Degree Master of Science Department Mining and Minerals Engineering Advisory Committee
Advisor Name Title Topuz, Ertugrul Committee Chair Karfakis, Mario G. Committee Member McPherson, Malcolm J. Committee Member Keywords
- Thin seam
- Stalls
- Auger
- Self advancing miner
- Backfilling
Date of Defense 1997-12-15 Availability unrestricted Abstract The depletion of more attractive thicker and easily accessiblecoal seams in the central Appalachia will direct attention
towards the extraction of coal seams thinner than 28 in.
This thesis investigates the feasibility of an integrated
mining and backfilling system applicable to thin seams. Two
conceptual mining systems, namely Auger mining and Self
Advancing Miner, have been proposed for this purpose. Both
these systems are designed to remotely mine coal from the
seams. Several attempts were made in the past to mine coal
in a similar fashion but were not very successful due to
several problems inherent to thin seams. The lack of
effective steering techniques, accurate coal/rock interface
and pillar thickness detection techniques were the main
shortcomings of the systems. These problems were addressed
in the proposed conceptual mining systems. Several coal/rock
interface and rib thickness detection techniques currently
available in the market or in the prototype stage have been
discussed. Recent developments in coal/rock interface
detection and direction sensing techniques have good
potential in alleviating the previously encountered problems.
Sensitivity analyses have been performed to assess the of
effect critical mining parameters on the production potential
of these systems. The self advancing miner has been found
to be more promising than auger mining. Conceptual panels
and face layouts for both systems have been included. Two
types of filling methods namely pneumatic and hydraulic are
considered applicable under thin seam conditions. A backfilling
technique using rubber hoses for fill placement can be
applied with both methods. Sensitivity analysis have been
performed to establish the relationship between face
operation cost, filling cost per ton and development cost
per foot. Resulting analyses indicate that panel cost per
short ton of coal is more sensitive to filling cost than on
development cost.
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