论文部分内容阅读
为更准确描述矿井反风时期通风系统网域中风流与瓦斯的变动过程,定义了通风机可能出现的停机、单机运行和双机运行等3种工作状态,给出对应状态编码。结合鹤壁矿区八矿实例,运用TF1M3D进行仿真分析,仿真结果与现场实测各特征点的瓦斯浓度相拟合。反风开始,通风机停机,矿井依靠自然风压通风,风量小,出现短时间的瓦斯积聚。通风机反风启动后,工况点发生变动;风流随之变化,工作面瓦斯出现高峰超限现象;随着反风的进行,运移瓦斯的浓度呈阶段性的降低。TF1M3D描述异步反风时矿井系统瓦斯气体组分变化的仿真。
In order to more accurately describe the process of the wind flow and gas changes during the anti-wind mine ventilation period, three working states of downtime, stand-alone operation and double-machine operation of the ventilator are defined, and the corresponding status codes are given. Combined with the eight mine in Hebi mine area, the simulation analysis is carried out by using TF1M3D. The simulation results are fitted with the measured gas concentrations of each characteristic point in the field. The beginning of the anti-wind, the fan down, the mine relies on natural air pressure ventilation, small air volume, a short period of gas accumulation. When the ventilator starts up in anti-wind, the working point changes; the air flow changes accordingly, and the gas peak in the working face exceeds the limit. With the progress of the anti-wind, the concentration of the transported gas decreases in a stepwise manner. TF1M3D describes the simulation of the variation of gas components in mine system during asynchronous anti-wind.