摘要
根据有效应力原理,建立瓦斯压力和煤体变形之间的耦合关系.在地应力和瓦斯压力的共同作用下,煤体发生弹脆性破坏,之后发展为层裂--粉化破坏,据此判断发生煤与瓦斯突出的危险性.根据一维煤激波管瓦斯突出实验,结合一维混相流动模型,进行了数值验证,证实了模型的可靠性.
A coupling relationship between the gas pressure and the coal deformation is obtained based on the principle of effective stress. Under joint actions of the crustal stress and the gas pressure, in the coal there will be elastic-brittle damages and layer fractured-powdering damages, accordingly, and the danger of coal and gas outburst is estimated. A three-dimensional model is validated by the numerical simulation result, which is approximately in agreement with the outburst experiment in the coal shockwave tube.
出处
《力学与实践》
北大核心
2014年第2期168-171,共4页
Mechanics in Engineering
关键词
有效应力
弹脆性
层裂--粉化
混相模型
effective stress, elastic-brittle, layered fracture-powdering, mixed phase model
