突出煤-瓦斯在巷道内的运移规律  

Migration law of outburst coal and gas in roadway

作　　者：孙东玲[1,2] 曹偈 苗法田[1,2] 孙海涛 赵旭生[1,2] 戴林超 王波[1,2] SUN Dongling;CAO Jie;MIAO Fatian;SUN Haitao;ZHAO Xusheng;DAI Linchao;WANG Bo(State Key Laboratory of the Gas Disaster Detecting Preventing and Emergency Controlling,Chongqing 400037,China;Gas Research Branch,China Coal Technology Engineering Group Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司瓦斯研究分院,重庆400037

出　　处：《煤炭学报》2018年第10期2773-2779,共7页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(51574280);重庆市基础科学与前沿技术研究专项资助项目(cstc2015jcyjBX0076);中国煤炭科工集团青年创新基金资助项目(2014QN007)

摘　　要：以煤与瓦斯突出过程中煤-瓦斯两相流为研究对象,利用自主研发的煤与瓦斯突出动力效应模拟试验装置进行了巷道中突出煤-瓦斯两相流试验研究,通过试验观察将煤颗粒的运动过程分为加速、平衡减速及沉降等运动阶段,并综合运用固体颗粒在气流中的悬浮运动机理和能量守恒定律,建立了一维情况下突出煤在巷道中的运移数学模型。通过模型计算分析得到,突出煤颗粒运移距离随初始气流速度的增大呈增大趋势,随颗粒粒径的分布规律由于其符合的流动状态不同而不同。Focusing on the coal-gas two-phase flow in the process of coal and gas outburst,the experimental study on outburst coal-gas two-phase flow in roadway is carried out by using self-developed dynamic effect of coal and gas outburst simulation test device.According to observations,the movement of coal particles in the test can be divided into acceleration stage,balance deceleration stage and settlement stage.The mathematical model of the movement of the outburst coal in the roadway is established by combining the suspension motion mechanism and the conservation of energy law of the solid particles in the airflow.Through the model calculation and analysis,the migration distance of the coal particles increases with the increase of the initial air velocity.Due to the different flow states,the law that the migration distance varies with the particle size is different.The mathematical model provides a quantitative analysis method for the engineering calculation of coal-gas two-phase flow of coal and gas outburst.

关 键 词：煤与瓦斯突出 运移 煤-瓦斯两相流 数学模型 

分 类 号：TD713[矿业工程—矿井通风与安全]