煤与瓦斯突出动力效应的模拟研究  

Simulation research on dynamic effect of coal and gas outburst

作　　者：曹偈[1,2] 孙海涛 戴林超[1,2] 孙东玲 王波[1,2] 苗法田 CAO Jie;SUN Haitao;DAI Linchao;SUN Dongling;WANG Bo;MIAO Fatian(State Key Laboratory of the Gas Disaster Detecting Preventing and Emergency Controlling, Chongqing 400037, China;China Coal Technology Engineering Group Chongqing Research Institute,Gas Research Branch, 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：《中国矿业大学学报》2018年第1期113-120,154,共9页Journal of China University of Mining & Technology

基　　金：国家重点研发计划项目(2016YFC0801402);国家自然科学基金项目(51774319);重庆市基础科学与前沿技术研究专项(cstc2015jcyjBX0076);"两江学者"计划专项经费资助项目([2013]渝九证字第1406号)

摘　　要：为了揭示煤与瓦斯突出启动后巷道内突出煤-瓦斯两相流运移规律及突出冲击波传播特征,利用自行研制的"煤与瓦斯突出动力效应模拟试验装置",进行了低气压条件煤与瓦斯突出动力效应模拟试验.通过实现突出口的主动快速开启、多种流体运移路线、阻力特性的巷道网络布置及参数的全方位实时监测,模拟了该固气参数条件下突出煤-瓦斯两相流在巷道网络中的运移过程.研究结果表明:巷道内突出煤运移经历3个阶段历时3 053ms;突出启动后巷道内气体压力、温度发生跳跃式改变,气压变化持续时间小于1s;突出冲击波阵面平均传播速度为405.36m/s,冲击波超压峰值沿巷道呈衰减趋势,主巷内接联络巷处的冲击波平均衰减系数是其他位置的5倍左右.To investigate the coal-gas two-phase flow migration law and the characteristics of shock wave propagation after the coal and gas outburst started,a dynamic effect simulation test in low gas pressure was carried out by using the self-developed coal and gas outburst dynamic effect simulation test device.By realizing the active quick opening of the outburst mouth,the roadway network arrangement of a plurality of fluid migration routes and the resistance characteristics,as well as the all-directional real-time monitoring of the parameters,the migration process of coal-gas two-phase flow in roadway networks with this solid-gas parameter was simulated.The results show that the outburst coal movement in the roadway experiences three stages,which takes 3 053 ms.There is a jumping change of pressure and temperature after the outburst occurs,and the duration of pressure change is less than 1 s.The average propagation velocity of outburst shock wave front is 405.36 m/s.The overpressure peaks of shock wave show an attenuation trend along the roadway,the average attenuation coefficient of the shockwave at the connection roadway of the main road is 5 times that of other locations.

关 键 词：煤与瓦斯突出 模拟装置 巷道网络 煤瓦斯两相流 冲击波 

分 类 号：TD713[矿业工程—矿井通风与安全]