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Cuttability of coal

Journal Article:

Abstract

The process of cutting dull M, dull bright MB, bright dull BM, and bright B coal under various compressive stress conditions was studied in laboratory tests. The efficiency of ploughs depends much more on the natural mining conditions than does that of shearer-loaders. For seams of medium workability, it is difficult to forecast whether ploughs will be successful. Cuttability tests are a good way of determining whether ploughs can be used. The effort necessary to cut coal in a stressed condition depends not only on such properties as the workability defined by the Protodyakonov index or compressive strength, but also, and mainly, on the petrographic structure and elastic properties of the coal. In bright coals with high elastic strain, and with BM and MB coals, a much greater increment of effort is necessary with increase in compressive stresses. The cuttability of dull coals from difficult mines was not very different.
Authors:
Publication Date:
Jan 01, 1978
Product Type:
Journal Article
Reference Number:
EDB-80-048044
Resource Relation:
Journal Name: Pr. Gl. Inst. Gorn., Komun.; (Poland); Journal Volume: 687
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; CUTTING; CUTTING TOOLS; ENERGY DEMAND; BENCH-SCALE EXPERIMENTS; COAL PLOWS; COMPRESSION STRENGTH; CUTTER LOADERS; ELASTICITY; HARDNESS; MICROSTRUCTURE; CARBONACEOUS MATERIALS; CRYSTAL STRUCTURE; DEMAND; ENERGY SOURCES; EQUIPMENT; FOSSIL FUELS; FUELS; MACHINING; MECHANICAL PROPERTIES; MINING EQUIPMENT; TENSILE PROPERTIES; TOOLS; 012000* - Coal, Lignite, & Peat- Mining
OSTI ID:
5548856
Country of Origin:
Poland
Language:
Polish
Other Identifying Numbers:
Journal ID: CODEN: PGIGA
Submitting Site:
CLA
Size:
Pages: 1-11
Announcement Date:

Journal Article:

Citation Formats

Sikora, W. Cuttability of coal. Poland: N. p., 1978. Web.
Sikora, W. Cuttability of coal. Poland.
Sikora, W. 1978. "Cuttability of coal." Poland.
@misc{etde_5548856,
title = {Cuttability of coal}
author = {Sikora, W}
abstractNote = {The process of cutting dull M, dull bright MB, bright dull BM, and bright B coal under various compressive stress conditions was studied in laboratory tests. The efficiency of ploughs depends much more on the natural mining conditions than does that of shearer-loaders. For seams of medium workability, it is difficult to forecast whether ploughs will be successful. Cuttability tests are a good way of determining whether ploughs can be used. The effort necessary to cut coal in a stressed condition depends not only on such properties as the workability defined by the Protodyakonov index or compressive strength, but also, and mainly, on the petrographic structure and elastic properties of the coal. In bright coals with high elastic strain, and with BM and MB coals, a much greater increment of effort is necessary with increase in compressive stresses. The cuttability of dull coals from difficult mines was not very different.}
journal = {Pr. Gl. Inst. Gorn., Komun.; (Poland)}
volume = {687}
journal type = {AC}
place = {Poland}
year = {1978}
month = {Jan}
}