摘要
针对金凤煤矿可能面临的总进、回风巷道风速超限以及用风地点风量紧张,主要通风机通风能力与井巷通风能力不匹配等问题,为优化调整通风系统结构,合理规划通风井巷联结形式。通过现场调查的方法对通风系统当前的阻力、自然风压等基础参数,以及主要通风机性能进行调查与测定分析;基于分析结果,构建三维矿井通风系统决策模型,将通风系统现状按4个不同时期节点进行仿真模拟,并根据模拟结果对矿井采掘接替、用风地点需风量,以及通风系统特征进行规划与调整,以实现对矿井中长期采掘布局,以及不同时期多风机联合运转通风系统的动态研究。研究结果表明:北部2^(#)回风斜井主要通风机的运行,大大缓解了北部1^(#)回风斜井系统的回风压力;北部2^(#)回风斜井开采重心全面移向34采区,34采区配风量比较集中;未来6 a内各主要通风机及井下网络系统可以满足各时期的风量需求。研究结果为矿井通风系统调整与改造提供理论依据。
In response to potential issues at Jinfeng Coal Mine,such as excessive airflow speeds in the main intake and return airways,insufficient airflow at ventilation points,and mismatches between the ventilation capacity of the main ventilator and the ventilation capacity of the mine shafts,this study aims to optimize the ventilation system structure and reasonably plan the connection forms of ventilation shafts and roadways.First,through on-site investigations,the current resistance,natural air pressure,and other basic parameters of the ventilation system,as well as the performance of the main ventilator,were measured and analyzed.Based on the analysis results,a three-dimensional mine ventilation system decision-making model was constructed.The current state of the ventilation system was simulated across four different time periods.Finally,based on the simulation results,the mine's mining succession,air demand at air-using points,and ventilation system characteristics were planned and adjusted to achieve dynamic research on the mine's medium-to long-term mining layout and the ventilation system's multi-fan joint operation across different time periods.The research results indicate that the operation of the main ventilation fan in the northern No.2 return air shaft significantly alleviates the return air pressure in the northern No.1 return air shaft system;the mining focus of the northern No.2 return air shaft has shifted entirely to the 34 th mining area,where the air distribution volume is relatively concentrated.Over the next six years,all main ventilation fans and underground network systems will be able to meet the air volume requirements for each period.The research results provide a theoretical basis for the adjustment and renovation of mine ventilation systems.
作者
赵俊杰
杨习学
张德志
张彦吉
秦汝祥
ZHAO Junjie;YANG Xixue;ZHANG Dezhi;ZHANG Yanji;QIN Ruxiang(Ningxia Coal Industry Co.,Ltd.,Yinchuan 750000,China;School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China)
出处
《煤炭技术》
2025年第12期159-164,共6页
Coal Technology
关键词
通风系统
仿真模拟
通风机
优化调整
ventilation system
simulation modeling
ventilator
optimization adjustment
