Publication
EVALUATION OF PILLAR STRENGTH USING NUMERICAL MODELING, CASE STUDY: TABAS COAL MINE
(SGEM Scientific GeoConference, 2009, M. Najafi, S.E. Jalali, F. Sereshki, A. R. YARAHMADI Bafghi)
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Pillars are key structural columns in underground mining. They are usually made of in situ intact ores and do not have additional reinforcements. Their main function is temporary or permanent support of ore ceiling of rooms during excavation and mining. Coal pillar strength is usually estimated according to empirical formulae obtained from field observations. Todays, numerical models have found increasing use in pillar design. The FLAC3D Software based Mohr-Coulomb Strain Softening (MCSS) failure criterion was use...
Exploration and Mining2009