白象山铁矿通风系统改造方案研究
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摘要
通过现场检测与数据分析,发现白象山铁矿存在系统总风量不足、风量分配不合理、风流短路等问题,严重影响井下安全生产。结合生产实际,提出3种改造技术方案并综合比较,最终确定-270与-390 m水平并联回风、采区风井断面扩大以及在采区进、回风井联巷设置辅扇对采区风流进行调控的系统改造方案。运用Ventsim软件对矿井通风网络进行解算,确定-270与-390 m水平回风机站风机型号均为DK60-8-№28,叶片安装角度为43°。改造后系统总风量达到286.4 m~3/s,主扇风机平均效率达到82%,矿井通风效果得到明显改善,劳动生产率将大大提高。
Trough field test and data analysis, it is found that there are some problems such as insufficient total air volume, unreasonable air volume distribution and short circuit in air flow existed in Baixiangshan Iron Mine, which seriously affect underground safety production. Combing with the production situation, three improvement technical schemes are proposed and comprehensive comparision of them is conducted. The ventilation system improvement scheme is determined, the scheme includes parallel air return of-270 m level and-390 m level, enlarge of cross section of air shaft in mining area, using the auxiliary fan in the connection roadway of air inlet shaft and air return shaft to regulate and control the air flow in mining area. The mine ventilation network is calculated based on Ventsim software, it is determined that model of air return fan station in-270 m level and-390 m level are both DK60-8-№28,blade installation angle is 43°,the total air volume of the improvement ventilation system is 286.4 m~3/s, average efficiency of the main fan reaches 82%,mine ventilation effects is improved effectively, the mine production efficiency will be improved significantly.
Trough field test and data analysis, it is found that there are some problems such as insufficient total air volume, unreasonable air volume distribution and short circuit in air flow existed in Baixiangshan Iron Mine, which seriously affect underground safety production. Combing with the production situation, three improvement technical schemes are proposed and comprehensive comparision of them is conducted. The ventilation system improvement scheme is determined, the scheme includes parallel air return of-270 m level and-390 m level, enlarge of cross section of air shaft in mining area, using the auxiliary fan in the connection roadway of air inlet shaft and air return shaft to regulate and control the air flow in mining area. The mine ventilation network is calculated based on Ventsim software, it is determined that model of air return fan station in-270 m level and-390 m level are both DK60-8-№28,blade installation angle is 43°,the total air volume of the improvement ventilation system is 286.4 m~3/s, average efficiency of the main fan reaches 82%,mine ventilation effects is improved effectively, the mine production efficiency will be improved significantly.
引文
[1] 唐小洪.土台铁矿矿井通风系统优化研究[D].重庆:重庆大学,2014.
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[2] 迟丰茂,桑军盛.焦家金矿望儿山分矿井下多级机站通风系统优化研究[J].中国矿山工程,2017(6):41-43.
[3] 黄玉焕.矿井通风技术[M].北京:冶金工业出版社,2017.
[4] 谢素璞.基于三维动态仿真技术的通风系统优化改造研究[D].淮南:安徽理工大学,2017.
[5] 陶树银,熊正明,程哲,等.金属矿山矿井通风系统优化研究[J].矿业研究与开发,2012(2):58-60.
[6] 季现伟.矿井通风监测系统与三维通风仿真系统信息融合研究与应用[J].金属矿山,2017(9):186-190.