多中段通风综合分区集中控制技术在罗河铁矿的应用
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摘要
罗河铁矿采用多中段回采方式,中段布置在-455～-782 m,分布范围广且较分散。原通风系统的矿井总风量为363. 71 m~3/s,存在总风量严重不足、多中段风流紊乱、风机布置不完善、中段风量分配不合理等问题。为解决矿井通风问题,重新核算通风系统总风量,根据各中段需风量综合分析,合理划分需风区,集中控制,利用三维动态模拟、风机风压平衡、多风机联合运行、风机变频调节等技术,合理分配各中段需风量。现场实施后,总风量提高至459. 10 m~3/s,各采区风量能够满足实际需风量要求,风机联合运行性能得到有效提升,保证了多中段通风系统运行的稳定性和可靠性。
Multi-section stoping method is used in Luohe Iron Mine,the stoping sections are distributed in-455 ～-782 m level,the distribution of stoping section is wide and dispersed. The total air volume of the orginal ventilation system is 363. 71 m~3/s,which show that the problems such as insufficient of total air volume,multi-section air flow turbulence,imperfect of fan arrangement,unreasonable distribution of air volume in stoping sections are existed. In order to solve the above ventilation problems,the total air volume of ventilation system is calculated again. According to the comprehensive analysis of required air volume of stoping sections,the air zones are divided,and the centralized controlling technique,three-dimensional dynamic simulation technique,balance technique of fan and wind pressure,multi-fan joint operation technique and fan frequency conversion regulation technique are adopted,so as to reasonably meet the air demand in each stoping sections. The actual practice results show that the total air volume is increased to 459. 10 m~3/s,the air volume can meet the air demand requirements of each mining area,the performance of fan joint operation is improved,the stability and reliability of multi-section ventilation system is ensured.
Multi-section stoping method is used in Luohe Iron Mine,the stoping sections are distributed in-455 ～-782 m level,the distribution of stoping section is wide and dispersed. The total air volume of the orginal ventilation system is 363. 71 m~3/s,which show that the problems such as insufficient of total air volume,multi-section air flow turbulence,imperfect of fan arrangement,unreasonable distribution of air volume in stoping sections are existed. In order to solve the above ventilation problems,the total air volume of ventilation system is calculated again. According to the comprehensive analysis of required air volume of stoping sections,the air zones are divided,and the centralized controlling technique,three-dimensional dynamic simulation technique,balance technique of fan and wind pressure,multi-fan joint operation technique and fan frequency conversion regulation technique are adopted,so as to reasonably meet the air demand in each stoping sections. The actual practice results show that the total air volume is increased to 459. 10 m~3/s,the air volume can meet the air demand requirements of each mining area,the performance of fan joint operation is improved,the stability and reliability of multi-section ventilation system is ensured.
引文
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