摘要
星光一号井1604工作面埋深浅,距离上部煤层的采空区近,周边火区自燃产生的CO等有害气体在负压通风的作用下,从地面裂缝和上覆采空区涌入到回采工作面。为了防止工作面CO超限,根据工作面风量和风压选定了局部通风机,利用风门、风筒和调节风窗等通风构筑物,在1604工作面应用了均压通风防灭火技术,监测了工作面回风巷和上隅角CO浓度,分析了进风量、回风量和工作面向采空区的漏风量,综合评价了均压通风的效果。结果表明,均压通风防灭火系统改变了工作面的压力分布,降低了工作面向采空区的漏风量,回采过程中工作面回风巷和上隅角CO浓度都未超过24×10^(-6),解决了浅埋深工作面CO超限的问题。
Working face 1604 was buried shallow,and not far away from the upper coal seam goaf. And the harmful gases such as CO produced by spontaneous combustion in the surrounding fire area flowed into the working face from the ground cracks and overburdened goaf under the action of negative pressure ventilation. In order to prevent the face of CO overrun,pressure balancing ventilation for fire prevention and control was used in 1604 working face. Pressure balancing ventilation was by the fan,damper,hairdryer and adjust the wind window,and the fan was selected according to the air volume and wind pressure at the working face. The CO concentration in the return airway and the upper corner of the working face were monitored,and the influent air volume,return air volume and air leakage amount from working face to gob were analyzed. The effect of equal pressure ventilation was comprehensively evaluated. The results show,pressure balancing ventilation system which solves the problem of CO overrun in shallow depth working face is to change the face of the pressure distribution,reducing the work for the mined-out area of air leakage. In the process of recovery,the concentration of CO in the return airway and upper corner of the working face did not exceed 24 × 10^-6,to solve the problem of CO overrun in shallow deep face.
出处
《能源与环保》
2017年第4期196-199,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
均压通风
浅埋深
一氧化碳
采空区
防灭火
pressure balancing ventilation
buried depth
CO
gob
fire prevention and control
作者简介
王海生（1984-），男，河南邓州人，助理研究员，硕士，2010年毕业于河南理工大学，现主要从事煤矿防灭火研究工作。
