灾变通风中矿井多风井异步反风的仿真实现  

Simulation on the Asynchronous Reverse Ventilation in Multi-airshaft Mine

作　　者：李宗翔[1,2] 路宝生 王天明[1,2] 王雅迪[1,2] 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]矿山热动力灾害与防治教育部重点实验室,辽宁阜新123000

出　　处：《系统仿真学报》2016年第12期2979-2985,共7页Journal of System Simulation

基　　金：国家自然科学基金(51174109;51074086)

摘　　要：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。To describe accurately the change process of airflow and gas in mine ventilation system during mine reverse ventilation period, the sol,rare TF1M3D was used to research the asynchronous reverse ventilation in multi-airshaft mine. The possible appeared three ventilator working conditions that shutdown, single operation, dual machine operation were defined and the according three codes were given respectively which were used to be the judgment of ventilator working condition. A numerical simulation test was made with the eighth of Hebi Colliery, the simulation results is consistent with the actual testing records of gas density. At the beginning of reverse ventilation, the ventilator stopped working, during a short pause, the mine ventilation relies on natural ventilation pressure, the velocity is low and the volume is small, the gas accumulation appeared in a short time. The airflow changes with the starting of reverse ventilation, TF1M3D gives out the change of ventilator operation point; at the same time, the gas flow changes with it, the peak overrun of gas in working face appears; with the reverse ventilation goes on, the gas concentration declines in stages. The asynchronous reverse ventilation simulation accurately describes the change of gas species in multi-airshaft mine during ventilation stopping period, and improves the calculation accuracy of emergency ventilation simulation.

关 键 词：灾变通风 矿井反风 通风机状态 浓度高峰流 3D网域仿真 

分 类 号：TD724[矿业工程—矿井通风与安全] TD725