摘要
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 multi-phase media continuum mechanics, the coupling instability theory of coal-methane outburst is proposed under finite deformation. From Second Laws of Thermodynamics, mathematical model of coal-methane for coupling instability of solidfluid biphase media is established by using tWo-order work minimum principle as a criterion for occurrence of outburst. The nonlinear finite element equations are presented. Numerical simulation of a typical outburst is made.
出处
《工程力学》
EI
CSCD
北大核心
1999年第4期47-53,共7页
Engineering Mechanics
关键词
瓦斯突出
煤突出
固-流耦合
耦合失稳
数值模拟
coal-methane, biphase media
solid-fluid coupling deformation
finite deformation
instability
numerical simulation
