薄煤层长壁工作面煤尘分布特征及其防治  

Coal dust distribution and control in thin seam longwall face

作　　者：张东升[1,2] 邱家轩[1,2] 范钢伟[1,2] 任天祥[3] 刘士春[2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏省徐州市221008 [2]中国矿业大学矿业工程学院,江苏省徐州市221116 [3]澳大利亚卧龙岗大学土木采矿与环境工程学院

出　　处：《中国煤炭》2011年第2期5-7,10,共4页China Coal

基　　金：中国矿业大学中国高校基本科研业务费专项资金(2010ZDP02B02);中国矿业大学煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM08X2);中国矿业大学青年科研基金项目(2008A003;2009A001);国家自然科学基金青年基金资助项目(50904063;51004101)

摘　　要：以小青矿W2-713刨煤机长壁工作面为试验基地,采用CFD(Computational Fluid Dynamics,计算流体力学)数值模拟技术,分析出工作面不同位置风流速度分布特征,得出了薄煤层刨煤机长壁工作面的高速风流区和低速风流区的位置;模拟得出了刨煤机、移架、工作面转载机、破碎机等不同产尘源的煤尘分布特征及其对井下环境的影响机理;通过对薄煤层刨煤机长壁工作面定向喷雾除尘的模拟分析,证明定向喷雾除尘系统不仅可以提高工作面整体降尘效果,还有利于消除工作面刨煤机附近高浓度瓦斯积聚。Face W2-713 in Xiaoqing Coal Mine was selected as a testing site and CFD（Computational Fluid Dynamics） numerical simulation taken as a methodology.Based on the analysis on the distribution features of air current velo,the locations of high-speed air current region and low-speed air current region were determined.The coal dust distribution features at different dust sources such as plow,loader,support moving and crusher were determined and its effect on underground working environment was analyzed.Through the simulation on directed spraying system in thin seam plow longwall face,the facts were proven that directed spraying system can not only improve the effect of dust suppression,but also avoid the accumulation of high concentration methane,which can provide a safe working environment on basic of high coal production in thin coal seam.

关 键 词：薄煤层长壁工作面开采 刨煤机 CFD数值模拟 煤尘分布特征 

分 类 号：TD823.251[矿业工程—煤矿开采]