Premium
Theory of the collapsed zone at the front of a coal seam and its effect on translatory rock bursting
Author(s) -
Lippmann H.
Publication year - 1991
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610150503
Subject(s) - bursting , geology , geotechnical engineering , coal mining , front (military) , coal , stress (linguistics) , engineering , linguistics , oceanography , philosophy , neuroscience , biology , waste management
If the slope of the uniaxial stress–strain diagram in the post‐failure regime is steep enough, it is shown, using a simplified (‘elementary’) theory, that the frontal zone of a coal seam close to a cavity may suddenly collapse. This collapse, well known from in situ , evidence, is also shown to reduce in most cases the danger of initiation or the strength of a subsequent coal mine bump.