中关铁矿通风系统现状优化与模拟

Optimization and Simulation of Ventilation System in Zhongguan Iron Mine

河北钢铁集团沙河中关铁矿采用两翼对角抽出式通风系统,由于水文地质条件复杂,导致5#、6#采区通风天井施工困难,在-170 m水平采用倒段通风,存在通风路径长、通风阻力大、井下整体回风效果差等问题。采用现场检测及数值模拟的方法,对中关铁矿通风系统进行了现场测定及三维仿真模拟解算,对通风系统存在的问题进行了总结,提出了5#、6#通风天井施工完成前的具体优化措施;利用Ventsim软件对5#、6#通风天井施工完成后的通风系统进行了模拟解算,得出5#、6#通风天井施工完成后的矿井总风量为269.5 m^(3)/s,满足设计要求(249.26 m^(3)/s),通风系统运行达到预期效果。

Shahe Zhongguan Iron Mine of HBIS Group adopts a two-wing diagonal extraction ventila⁃tion system.Due to complex hydrogeological conditions,the construction of ventilation patio in the 5#and 6#mining area is difficult.Inverted section ventilation is adopted at the-170 m level.The methods of field de⁃tection and numerical simulation are used to measure the ventilation system in Zhongguan Iron Mine and cal⁃culate the 3D simulation,and the existing problems of the ventilation system are summarized.Specific opti⁃mization measures before the completion of the 5#and 6#ventilation patios are proposed.Ventsim software is used to simulate the ventilation system after the completion of the 5#and 6#ventilation patios.It is concluded that the total mine air volume after the completion of the 5#and 6#ventilation patios is 269.5 m^(3)/s,which meets the design requirements(249.26 m^(3)/s).The operation effect of ventilation system reaches the expected target.