局部正压通风技术防治上部煤层采空区CO涌出  

Local Positive Pressure Ventilation Technology Applied to Prevent CO Emission from Mining Goaf in Above Seam

作　　者：徐俊[1,2] 刘成武 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中国煤炭科工集团重庆研究院,重庆400037 [3]陕西煤业化工集团孙家岔龙华矿业有限公司,陕西榆林719314

出　　处：《煤炭科学技术》2013年第4期50-52,56,共4页Coal Science and Technology

基　　金：国家自然科学基金资助项目(50804022)

摘　　要：针对龙华煤矿3-1煤层30106、30107工作面上部2-2煤层采空区高浓度CO气体有从工作面大量涌出的危险,采用灌注高分子发泡材料、注氮与局部正压通风技术,消除了高浓度CO的威胁;介绍了局部正压通风技术的实施步骤以及通风系统的调整方案;通过风压、风量以及上隅角CO浓度监测,综合评价了局部正压通风技术的实施效果。现场应用发现,采用局部正压通风技术可将本煤层与上部煤层采空区的压能差保持在约200Pa,能保证上隅角CO体积分数不超过24×10-6。According to the danger of CO large emission from the coal mining face due to the high concentration CO gas in the goaf of the upper 2-2 seam of No.30106 and No.30107 coal mining face in 3-1 coal seam of Longhua Mine,the polymer foam material injection,nitro- gen injection and local positive pressure ventilation technology were applied to eliminate the danger of the high concentration CO.The paper introduced the implemented steps of the local positive pressure ventilation technology and the adjustment plan of the ventilation system. With the monitoring and measuring of the ventilation pressure, ventilation quantity and the upper comer CO content, the paper comprehen- sively evaluated the implemented effect of the local positive pressure ventilation technology.The site application showed that the application of the local positive pressure ventilation technology could keep the pressure energy difference between the mining seam and the goal of the upper seam at about 200 Pa and could keep the CO content in the upper comer not over 24×10^-6.

关 键 词：局部正压通风 上部煤层采空区 通风系统调整 上隅角CO 

分 类 号：TD711.41[矿业工程—矿井通风与安全]