多径向涡形风控制岩巷综掘面粉尘污染分析  

Analysis on the Dust Pollution in Fully Mechanized Rock Headings Controlled by the Multi-Radial Vortex Wind

作　　者：聂文[1,2,3] 魏文乐 华赟[1,3] 刘华君[1] 马鹤[1,3] 高敏[3] NIE Wen WEI Wenle HUA Yun LIU Huajun MA He GAO Min(State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China Research Center of Coal Resources Safe Mining and Clean Utilization, Liaoning Technical University, Faxin 123000, China College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, China)

机构地区：[1]山东科技大学,矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛266590 [2]辽宁工程技术大学,煤炭资源安全开采与洁净利用工程研究中心,辽宁阜新123000 [3]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《应用基础与工程科学学报》2017年第1期65-77,共13页Journal of Basic Science and Engineering

基　　金：国家自然科学基金煤炭联合重点支持项目(U1261205);国家自然科学基金青年基金项目(51404147);中国博士后第57批面上一等资助项目(2015M570601);辽宁工程技术大学煤炭资源安全开采与洁净利用工程研究中心开放基金(LNTU16KF13)

摘　　要：针对岩巷综掘面粉尘质量浓度高且难以控制的难题,利用数值模拟与现场测试相结合的手段分析了多径向涡形风控制岩巷综掘面粉尘污染规律.结果表明:多径向涡形风应用后,压风量、压抽比越小,越利于形成轴向指向迎头流动且风速均匀的控尘风幕;压风量越大,压抽比越小,50mg/m3以上粉尘扩散距离越小,并得出了随压风量、压抽比变化的函数关系;压抽比为0.75时,形成的控尘风幕较优,高质量浓度粉尘扩散距离为3.4m,掘进机司机处粉尘质量浓度为19.6mg/m3,且易于现场应用.现场测试与数值模拟结果基本一致,应用多径向涡形风且压抽比为0.75时,距迎头5.5m断面测点的粉尘质量浓度已降至18.9mg/m3以内.High concentrations of the dust in fully mechanized rock headings is still a troublesome issue. In order to control the dust effectively, the numerical simulation and in-situ tests of the dust controlling method using multi-radial vortex air curtain have been carried out in this research. The results show that the less forcing airflow, the better ability to form the multi-radial vortex air curtain. Similarly, the less airflow ratio of the forcing system on exhausting system also gave better forming ability. The more forcing airflow was supplied, the less airflow ratio was, and the shorter diffusion distance of concentration dust above 50mg/m3 was. The functional relationship of the distance change with forcing airflow volume and airflow ratio were obtained. When the airflow ratio was 0. 75, the dust controlling air curtain was optimum. The diffusion distance of high concentration dust was 3.4m and the dust concentration at the driver position in mechanized road header was 19.6mg/m3 ,which is easier to apply in the field. The numerical simulation results were in good agreement with the in-situ tests, and measuring point on the section being 5. 5m away from the heading face the dust concentration of was reduced to 18. 9mg/m3 after the application of the multi-radial vortex air curtain.

关 键 词：多径向涡形风 岩巷综掘面 粉尘污染 控制 

分 类 号：TD714[矿业工程—矿井通风与安全]