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本文在多相介质力学的理论基础上,提出了煤体有限变形下煤与瓦斯突出的耦合失稳理论。从热力学第二定律出发,以应力的二阶功最小原理作为突出发生的准则,建立了煤与瓦斯突出的固─流两相介质耦合失稳的数学模型,给出了两相介质耦合失稳问题的非线性有限元方程并进行了数值模拟。
Based on the theory of multiphase dielectric mechanics, this paper presents the coupled instability theory of coal and gas outburst under finite deformation of coal body. Based on the second law of thermodynamics, the second principle of stress is taken as the criterion of prominence. The mathematical model of the coupled instability between solid and fluid in coal and gas outburst is established. The coupled instability The problem of nonlinear finite element equation and numerical simulation.