摘要
四季气候变化影响着矿井内自然风压的大小和方向,若将自然风压作为动力合理运用,有益于矿井通风系统节能减排。眼前山铁矿井下通风系统在初期设计中对自然风压的利用较少,且风机选型方面未将四季气候变化的因素考虑其中。本文对眼前山地区四季气候变化对矿井通风的影响规律进行研究,并以此规律指导井下基站风机进行优化。通过三维仿真系统建立井下通风系统模型,模拟眼前山地区一年四季气候条件,通过风流模拟计算进风井口处的自然风压大小和方向,结果表明眼前山地区夏季日间,1号主进风井、2号主进风井处会出现与矿井通风方向反向的自然风压,其余季节进风井处自然风压均有利于通风,其中,冬季自然风压可利用价值最大,且冬季风机风压较夏季风机风压显著增大,使得冬季总进风量增加4.46%;建议针对主机站2-3基站、2-4基站的K-8-19型风机和主机站2-15基站、2-16基站的K-8-23型风机进行工况点调节,在冬季时期将主扇叶片安装角由35°调整至30°;根据眼前山地区的四季气候变化规律适时调整主要通风机工况点,对自然风压有效利用,解决了矿井通风系统冬季风量过剩的问题,实现了以更加节能的方式满足矿井通风需要。
Seasonal climate change affects the magnitude and direction of the natural wind pressure in the mine,and if the natural wind pressure is properly used as a driving force,it will be beneficial to energy saving and emission reduction in mine ventilation system.In the initial design of the underground ventilation system of Yanqianshan Iron Mine,the use of natural wind pressure is relatively small,and the selection of fans does not take into account the factors of seasonal climate change,through the study of the seasonal climate change in Yanqianshan Area on the impact of mine ventilation law,and use this law to guide the optimization of underground base station fans.Through the 3D simulation system to establish the underground ventilation system model,simulate the climate conditions of Yanqianshan Area throughout the year,through the wind flow simulation to calculate the magnitude and direction of the natural wind pressure at the inlet shaft,the results show that Yanqianshan Area in the summer daytime,the No.1,No.2 main inlet shafts will appear with the mine ventilation direction of the reverse of the natural wind pressure,the rest of the seasons at the inlet shafts of the natural wind pressure is conducive to ventilation,in which the natural wind pressure in winter can be exploited the value of the natural wind pressure in winter is the largest,and the wind pressure of the fan in winter is significantly higher than that in summer,which makes the total air intake in winter by 4.46%.It is recommended to adjust the working condition of K-8-19 fan at 2-3 and 2-4 base station of the main station and K-8-23 fan at 2-15 and 2-16 base station of the main station,and to adjust the mounting angle of the main fan blades from 35°to 30°in winter,and to adjust the main fan blades from 35°to 30°.According to the changing law of seasonal climate change of Yanqianshan Area,the working point of the main fan is adjusted at the right time,and the natural wind pressure is effectively used,which solves the problem of excess air volume of the mine ventilation system in winter,and achieves to satisfy the needs of mine ventilation in a more energy saving way.
作者
柴青平
傅国辉
邓皓泽
黄铂然
黄浩
王培涛
CHAI Qingping;FU Guohui;DENG Haoze;HUANG Boran;HUANG Hao;WANG Peitao(Ansteel Group Mining Corporation Limited,Anshan 114001,China;School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《中国矿业》
北大核心
2024年第3期57-65,共9页
China Mining Magazine
基金
国家自然科学基金项目资助(编号:52074020)
煤炭开采水资源保护与利用国家重点实验室2019年开放基金课题项目资助(编号:WPUKFJJ2019-06)
北京科技大学青年教师学科交叉研究项目(中央高校基本科研业务费专项资金)资助(编号:FRF-IDRY-21-001)。
关键词
自然风压
四季变化
三维仿真模拟
矿井通风
节能
风机优化
natural wind pressure
seasonal change
3D simulation
mine ventilation
energy saving
fan optimization
