大型特厚煤层高瓦斯矿井风流非稳定流动规律研究  

Study on the Non-stable Flowing Rules of Airflows in Large-scale Mines with Thick Seam and High Gas

作　　者：冯小静[1] 王辉跃[2,3] 田取珍[4] 张小强[4] 

机构地区：[1]太原理工大学采矿工艺研究所,山西太原030024 [2]煤炭科学研究总院沈阳研究院,辽宁沈阳110016 [3]煤矿安全技术国家重点实验室,辽宁沈阳110016 [4]太原理工大学矿业工程学院,山西太原030024

出　　处：《煤矿安全》2012年第12期166-169,共4页Safety in Coal Mines

基　　金："十二五"国家科技支撑计划资助项目(2012BAB13B04);高等学校博士学科点专项科研基金资助项目(20111402120004);国家自然科学基金资助项目(51104105;51174141)

摘　　要：以塔山煤矿为工程研究背景,对"两进一回"的通风风流流动规律进行了分析。建立了风流非线性计算模型,并在此基础上运用Comsol数值计算软件分析不同配风量情况下风流的流动规律。研究结果表明,当两巷道进风量一样时,在工作面的中部形成了涡流,瓦斯容易积聚,风速达到9 m/s以上,巷道中风流整体上近似服从正态分布。当两巷道进风量不一样时,工作面内没有形成瓦斯积聚,瓦斯得到充分的稀释,风速约为4.7 m/s,巷道内风流流动状态起伏较大。两进风巷风量分配不一样更有利于工作面瓦斯的稀释。In this paper,Tashan Coal mine is taken as the research subject and a new ventilation method is put forward.Then,based on the non-linear computation model of air-flow,this thesis,using computation software of Comsol,will make an analysis of the flowing rules under different quantity of air intake.The result shows that when the air intake has the same quantity in two lanes,the vortex will be created in working face,with a air velocity of 9 m/s.In such case,gas accumulation will take place and flowing states of air-flow can be presented in a normal distribution.When the air intake has the different quantity in two lanes,gas accuniulation will not be produced and the air velocity reaches 4.7 m/s so that the gas can be completely diluted.And also,the flowing states are non-stable.Therefore,different quantity of air intake contributes to the gas dilution.

关 键 词：大型高瓦斯矿 非线性计算模型 非稳定流动 数值模拟 

分 类 号：TD724[矿业工程—矿井通风与安全]