综掘工作面抽尘区域对旋流风幕控尘的影响  

Influence of dust extraction area on swirling air curtain dust control in fully mechanized excavation face

作　　者：王昊[1,2] 陶金旭 撒占友[1,2] 吴静波 刘杰[1,2] 卢守青[1,2] WANG Hao;TAO Jinxu;SA Zhanyou;WU Jingbo;LIU Jie;LU Shouqing(Department of Safety Science and Engineer,Qingdao University of Technology,Qingdao 266520,China;Research Center for Accident Prevention Technology in Key Industries of Shandong Province,Qingdao University of Technology,Qingdao 266520,China)

机构地区：[1]青岛理工大学安全科学与工程系,山东青岛266520 [2]青岛理工大学山东省重点行业领域事故防范技术研究中心,山东青岛266520

出　　处：《煤矿安全》2023年第1期1-8,共8页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51974169,51804176);山东省自然科学基金资助项目(ZR2020QE124);山东科技大学矿山灾害预防控制重点实验室开放课题基金资助项目(MDPC201903);山东省高等学校优秀青年创新团队资助项目(2019KJH008)。

摘　　要：为提高综掘工作面旋流风幕控尘效率,降低高浓度粉尘污染,运用数值模拟与工程实测相结合的方法分析了抽尘区域对旋流风幕控尘的影响规律。结果表明:随着抽风口距工作面距离增大,抽风筒距压风筒对侧巷道边壁越远,工作面流场控尘能力逐渐降低,高浓度粉尘扩散距离及扩散角均随之增大。基于模拟结果,确定了综掘工作面旋流风幕控尘的最优抽尘区域为抽风口距工作面2 m,抽风筒安设于压风筒对侧巷道边壁。通过工程应用,验证了数值模拟结论的有效性,掘进司机处粉尘浓度可降至24.6 mg/m^(3),风幕控尘效率达到91%。In order to improve the dust control efficiency of swirling air curtain in fully mechanized excavation face and reduce the pollution of high concentration dust, this paper analyzes the influence of dust extraction area on swirling air curtain dust control by combining numerical simulation with engineering measurement. The results show that with the increase of the distance between the air extraction vent and the working face, the farther the air extraction duct is from the side wall of the roadway opposite to the air compression duct, the lower the dust control ability of the working face flow field, and the higher the diffusion distance and diffusion angle of the high concentration dust. Based on the simulation results, it is determined that the optimal dust extraction area of the swirling air curtain dust control in the fully mechanized excavation face is 2 m away from the working face, and the air extraction duct is installed on the side wall of the roadway opposite to the air compression duct. Through engineering application,the validity of the numerical simulation conclusion is verified. The dust concentration at the driver of driving machine can be reduced to 24.6 mg/m^(3), the dust control efficiency of the air curtain reaches 91%.

关 键 词：综掘工作面 抽尘区域 旋流风幕 控尘规律 粉尘扩散 

分 类 号：TD714[矿业工程—矿井通风与安全]