判断煤与瓦斯突出危险性的三维模型  

THREE-DIMENSIONAL MODEL FOR ESTIMATING COAL AND GAS OUTBURST

作　　者：陈力[1] 乔继延[1] 丁雁生[1] 

机构地区：[1]中国科学院力学研究所,流固耦合系统力学重点实验室,北京100190

出　　处：《力学与实践》2014年第2期168-171,共4页Mechanics in Engineering

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.

关 键 词：有效应力 弹脆性 层裂--粉化 混相模型 

分 类 号：X45[环境科学与工程—灾害防治]