摘要
针对新桥煤矿中央风井系统与南风井系统存在明显相互影响及南翼采区通风能力不足的问题,采用基点法对矿井通风系统的基本参数进行测定,利用回路风量法与Scotthensley迭代法对当前通风系统以及提出的优化方案进行通风网络解算。矿井通风阻力测定的结果表明:中央风井系统与南风井系统均为回风段阻力消耗最大,约为60%;中央风井系统的风量与通风阻力匹配不合理,通风阻力过高;公共段阻力消耗达到中央风井风机风压的36%,达到南风井风机风压的45%,中央风井系统与南风井系统存在明显的互相影响。分析三种优化方案的解算结果可知:为满足南翼各用风点用风需求,短期内可在南翼煤仓上口通风行人巷设置通风调节设施,使风量控制在13.33 m3/s;为彻底解决南翼风量不足与通风阻力过高的问题需要新形成南翼并联回风巷。
In response to the obvious mutual influence between the central air shaft system and southern air shaft system of Xinqiao Coal Mine and the insufficient ventilation capacity of the southern wing mining area,the basic parameters of the mine ventilation system are measured using the base point method.The current ventilation system and the proposed optimization plan are solved using the loop air volume method and Scott-hensley iteration method for ventilation network calculation.The results of mine ventilation resistance measurement indicate that the central air shaft system and southern air shaft system have the highest resistance consumption in the return air section,which is about 60%;the matching between the air volume and ventilation resistance of the central air shaft system is unreasonable,and the ventilation resistance is too high;the resistance consumption in the public section reaches 36%of the air pressure of the central air shaft fan and 45%of the air pressure of the southern air shaft fan. There is a significant mutual influence between the central air shaft system and the southern air shaft system. Analysis of the solution results of three optimization schemes shows that: in order to meet the air demand of various air consumption points on the south wing, ventilation adjustment facilities can be set up in the ventilation pedestrian alley at the upper entrance of the south wing coal bunker in the short term, so as to control the air volume at 13.33 m3/s;to completely solve the problems of insufficient air volume and high ventilation resistance in the south wing, it is necessary to form a new parallel return air roadway in the south wing.
作者
张新过
张斌
王泽华
郝天轩
ZHANG Xinguo;ZHANG Bin;WANG Zehua;HAO Tianxuan(Xinqiao Coal Mine of Yongmei Group Co.,Ltd.,Henan Energy Group Co.,Ltd.,Yongcheng 476600,China;College of Safety Science and Engineering,Henan Polytechnic University,Jiaozuo 454000,China;Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization,Jiaozuo 454000,China)
出处
《中国矿业》
2023年第12期107-114,共8页
China Mining Magazine
基金
河南省科技攻关项目资助(编号:222102320172)。
关键词
多风井系统
通风系统
网络解算
优化
矿井通风
multiple air shaft system
ventilation system
network solution
optimization
mine ventilation
