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3D dynamic simulation of reinforced concrete seals for 120 psi design standard.

Authors
Kallu-RR; Yassien-A; Morsy-K; Peng-SS
Source
Proceedings of the 28th International Conference on Ground Control in Mining, July 28-30, 2009, Morgantown, West Virginia. Peng SS, Barczak T, Mark C, Tadolini S, Finfinger G, Heasley K, Luo Y, eds., Morgantown, WV: West Virginia University, 2009 Jul; :162-168
NIOSHTIC No.
20035839
Abstract
Prior to July 2007, the only accepted method by MSHA for evaluating the mine seal design and performance is the full-scale explosion tests conducted in the NIOSH's Lake Lynn Experimental Mine (LLEM) for deeming a seal design suitable for use in U.S. coal mines. Since the new regulations came into effect use of these conventional full-scale explosion tests for evaluating mine seals for the new elevated design standards may not be practicable. Generation of such high explosion pressures in experimental mines is dangerous and may cause permanent damage to the testing facilities. Further, they require significant amount of time, labor and money. Considering these factors, there is a need to develop scientific methods for evaluation of new seal designs and for understanding the dynamic seal response. This paper tries to address the reinforced concrete (RC) seal design using the three dimensional finite element based explicit software ABAQUS. Full-scale explosion test data available from NIOSH's LLEM on 20 psi reinforced concrete seal is used for validating the numerical models. Further in this paper, based on the results from the validation models, a reinforced concrete seal is designed for 120 psi design standard for typical entry dimensions.
Keywords
Coal-mining; Concretes; Construction-materials; Explosion-protection; Explosions; Explosion-venting; Ground-control; Ground-stability; Mining-industry; Risk-analysis; Room-and-pillar-mining; Safety-measures; Sealing-compounds; Underground-mining; Work-areas; Work-environment
Publication Date
20090728
Document Type
Conference/Symposia Proceedings
Editors
Peng-SS; Barczak-T; Mark-C; Tadolini-S; Finfinger-G; Heasley-K; Luo-Y
Funding Type
Contract
Fiscal Year
2009
NTIS Accession No.
NTIS Price
ISBN No.
9780978938338
Identifying No.
Contract-2007-N-09921
Source Name
Proceedings of the 28th International Conference on Ground Control in Mining, July 28-30, 2009, Morgantown, West Virginia
State
PA; WV
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