摘要
为了治理山西河曲晋神磁窑沟煤矿13108综放工作面回风隅角及工作面CO气体超限、低氧这一难题,开展了13108工作面均压通风体系调试试验,保持工作面风压略高于上覆采空区,使采空区涌入回风隅角及工作面的有害气体减少。结果表明:1台FBDNO.8.0局部通风机双电机与2台FBDNO.8.0局部通风机单电机运行,既满足工作面风量(1 618 m^(3)/min),又能使工作面与上覆采空区的正压差降至最低。在均压通风系统启动后,13108综放工作面及回风隅角的CO和O2体积分数均能降至《煤矿安全规程》规定的范围内,有效解决工作面及回风隅角气体超限问题,保证了工作面安全生产。
In order to solve the problem of carbon monoxide gas overrun and low oxygen concentration in the return air corner and working face of 13108 fully mechanized caving face in Shanxi Hequ Jinshen Ciyaogou Coal Mine,the debugging test of pressure equalization ventilation system in the working face was carried out,and the wind pressure in the working face was slightly higher than that in the overlying goaf,so that the harmful gas in the goaf into the return air corner and the working face was reduced.The results show that the operation of one FBDNO.8.0 local fan with double motors and two FBDNO.8.0 local fans with single motors can not only meet the air volume of the working face( 1 618 m3/min),but also minimize the positive pressure difference between the working face and the overlying goaf.After the start of the pressure equalization ventilation system,the carbon monoxide and oxygen volume fraction in the 13108 fully mechanized caving face and the return air corner can be reduced to the range specified in the ' Coal Mine Safety Regulations ',which effectively solves the problem of gas overrun in the working face and the return air corner and ensures the safe production of the working face.
作者
许金钟
Xu Jinzhong(Shanxi Hequ Jinshen Ciyaogou Coal Industry Co.,Ltd.,Xinzhou Shanxi 036504)
出处
《晋控科学技术》
2024年第4期27-31,34,共6页
Jinneng Holding Science and Technology
关键词
均压通风
低氧现象
采空区漏风
防灭火
Even pressure ventilation
Low oxygen phenomenon
Air leakage in gob
Fire prevention
