冬季进风井筒风流紊乱防控技术  

Prevention and Control Technology of Flow Disorder in Intake Shafts in Winter

作　　者：聂百胜[1,2] 郭建华[1,2] 王春亮[1,2] 苏士龙[3] 赵璧[1,2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京100083 [3]山西焦煤集团投资有限责任公司,山西太原030000

出　　处：《煤矿安全》2015年第12期65-69,共5页Safety in Coal Mines

摘　　要：针对我国煤矿冬季进风井筒容易出现风流紊乱且难于及时预防、调控的问题,结合矿井实例,对进风主井风流紊乱控制方法进行了分析,确定了通过调节供暖热风量从而减小井筒间自然风压的技术方法,并研究开发了一套能够便捷、有效防控风流紊乱的技术系统。系统通过合理布置传感器,对进风井筒风温、风速进行实时监测的同时,采用变频控制器和PLC对热风机组风机转速和电控阀门状态进行调节,并利用工业环网和工控机实现远程监控,进而实现便捷调节井筒热风量、防控其风流紊乱的目的。现场试验效果表明,当进风井筒风量明显减小时,利用该系统进行调控,在30 min内即可改变进风风流状态,提高进风井筒供暖效果的同时,有力保障了通风系统的风流稳定性。According to the easy occurrence of flow disorder in winter which is difficult to prevent and control in intake shafts of coal mines in China,combined with example,the control methods of flow disorder in main shaft was analyzed. And technical method of regulating the volume of hot air for heating intake shafts was determined,by which natural wind pressure between intake shafts was decreased. A convenient and effective technology system for preventing and controlling flow disorder was also developed. In order to regulate the volume of hot air,the system could monitor intake shafts＇ air temperature and wind speed in real time by proper placement of sensors,and adjust the fan＇s speed and valve operation of unit air heater by installing variable frequency controller and PLC,and realize the remote monitoring by utilizing industrial Ethernet and industry control computer. The site experiment showed that,the intake airflow state could be changed in 30 minutes by using this system to adjust temperature difference between intake shafts when its air flowrate obviously reduced. The system improved the heating result of intake shafts,and also guaranteed the stability of ventilation system.

关 键 词：风流紊乱 自然风压 进风井筒 防控技术 矿井通风 

分 类 号：TD725[矿业工程—矿井通风与安全]