Investigations into the effect of discontinuities on the strength of coal pillars

Journal of The South African Institute of Mining and Metallurgy

Volumn 97, Issue 2, 1997, Pages 57-61

  Esterhuizen, G S ^a  

^a UNIVERSITY OF PRETORIA   (South Africa)

Author keywords

[No Author keywords available]

Indexed keywords

COAL MINES; DESIGN; MATHEMATICAL MODELS; SAFETY FACTOR; STRENGTH OF MATERIALS; UNDERGROUND STRUCTURES;

BORD AND PILLAR MINING; COAL PILLARS; COAL SEAMS;

ROOM AND PILLAR MINING;

EID: 0031094410     PISSN: 0038223X     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (11)

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4. HOEK, E. and BROWN, E.T. Underground excavations in rock, 1980. London: Inst. Mining and Metall.
5. SERAFIM, J.L. and PERREIRA, J.P. Consideration of the geomechanics classification of Bieniawski. Proc. Int. Symp. Engng Geol. and Underground Construction, 1983. Lisbon, Portugal. pp. 1133-1144.
6. HOEK, E., KAISER P.K., and BAWDEN W.F. Support of underground excavations in hard rock, 1995. Rotterdam, A.A. Balkema. pp. 89-98.
7. BIENIAWSKI, Z.T. Rock mass classification in rock engineering. Exploration for rock engineering, 1976. Z.T. Bieniawski (ed.), 1: Rotterdam, A.A. Balkema. pp. 97-106.
8. PRIEST, S.D. and HUDSON, J.A. Discontinuity spacings in rock. Int. J. Rock Mechanics & Min. Sci. 1976. 13, pp. 135-148.
9. ITASCA CONSULTING GROUP. User's manual UDEC, 1992. V1.8. Minnesota.
10. WAGNER, H. Determination of the complete load-deformation characteristics of coal pillars. Safety in Mines Research Proc. of the 21st Int. Conf. Sydney. 1974.
11. MADDEN, B.J. Squat pillar design in South African collieries. Symp. Advances in rock mechanics in underground coal mining, 1989. SA National Group on Rock Mechanics, pp. 83-90.