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将采场周围含断续节理的煤岩体视为损伤介质,并考虑压剪和拉剪不同的应力环境,建立了二种应力状态下的本构关系,并将其应用于某矿采场围煤岩运移规律及破坏特征分析中。实例计算表明,所建模型能较为合理地反映现场实际,为合理计算采场矿山压力与岩层运动规律提供了依据。
The coal and rock mass with discontinuous joints around the stope is regarded as the damage medium. Considering the different stress environment of the compression and shear, two constitutive relations under stress state are established and applied to a mine stope Surrounding coal and rock migration and destruction characteristics of the analysis. The case study shows that the model can reflect the actual situation more reasonably, and provides the basis for calculating the mine pressure and rock movement reasonably.