Research on Brittleness and its Definition of Mudstone
2013 ◽
Vol 275-277
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pp. 379-382
Keyword(s):
Abstract. Through the uniaxial compressive test, the mechanical parameters and the complete stress-strain curves were obtained, which presented a brittle failure of the mudstone samples of the No.21coal seam in West Henan. Soft rock was regarded as no brittle in its failure usually, but in fact it was exactly. It showed that yield failure occurred in some areas and tension occurred inside the specimens because of the samples’ inhomogeneous deformation. The comprehensive decision method of mining surrounding rock’s brittleness was suggested: the brittleness index was more than 25; the strain of rock at failure was less than 3%, and there was brittle stress drop in the complete stress-strain curve.
1966 ◽
Vol 1
(4)
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pp. 331-338
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Keyword(s):
2014 ◽
Vol 693
◽
pp. 370-375
Keyword(s):
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1980 ◽
Vol 63
(2)
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pp. 567-572
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2012 ◽
Vol 27
(2)
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pp. 318-328
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Keyword(s):
2012 ◽
Vol 594-597
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pp. 512-515
Keyword(s):
2016 ◽
Vol 92
◽
pp. 107-118
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2013 ◽
Vol 53
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pp. 121-133
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