环绕射流脉冲通风治理上隅角瓦斯积聚的研究  

Study on Prevention and Control of Gas Accumulation in Upper Corner Using Rotary-Jet Pulse Ventilation

作　　者：王凯[1] 俞启香[1] 杨胜强[1] 张仁贵[1] 

机构地区：[1]中国矿业大学采矿工程系,江苏徐州221008

出　　处：《中国矿业大学学报》2000年第4期353-357,共5页Journal of China University of Mining & Technology

基　　金：国家自然科学基金!资助项目 ( 59874 0 2 7) ;国家"九五"重点科技攻关项目! ( 96- 2 2 3- 0 1- 0 5- 0 4 ) ;煤炭科学基金!资助项

摘　　要：基于射流基础理论和相关研究成果 ,分析了环绕射流对其周围高浓度瓦斯的卷吸稀释作用及其横穿巷道主风流时的弯曲变形特征 ,阐明了环绕射流脉冲通风对回采工作面上隅角积聚瓦斯的柔性排放作用 ,讨论了风机旋转频率对环绕射流的影响 .现场试验表明 ,环绕射流脉冲通风对治理上隅角瓦斯积聚的效果良好 .Based on the basic theory and related research achievements of jet, the entrainment and dilution effects of rotary jet on gas with high concentration were analyzed, and its deforming and curving characteristics during crosscutting the main airflow of coal faces was discussed. Then the gentle discharging effect of rotary jet pulse ventilation on accumulating gas in the upper corner was explained, and the influence of fan rotation frequency upon rotary jet was discussed. A field experiment shows that the rotary jet pulse ventilation is very effective for prevention and control of gas accumulation in the upper corner of coal faces.

关 键 词：回采工作面上隅角 瓦斯积聚 环绕射流 脉冲通风 

分 类 号：TD712.54[矿业工程—矿井通风与安全]