矿井可控循环通风技术在杜家沟矿的应用

Application of Mine Controllable Circulation Ventilation Technology in Dujiagou Mine

杜家沟矿作为资源整合型矿井,随着矿井采掘深度的延伸,矿井通风线路的延长,增加通风阻力。采掘工作面在供风量不足的情况下易造成瓦斯积聚,瓦斯浓度高,威胁矿井的安全生产,为提高回采效率和充分利用工作面风量。采用可控循环通风技术对矿井的通风系统进行优化改造,通过数值模拟研究了改造后循环通风方案下工作面风速和瓦斯浓度分布,现场实践取得良好效果,证明了数值模拟结果的准确性,通风效果良好,即达到节能降耗目标,也保证矿井的安全生产。

As a resource integrated mine,Dujiagou mine increases ventilation resistance with the extension of mining depth and mine ventilation line.When the air supply of the mining face is insufficient,it is easy to cause gas accumulation and high gas concentration,which threatens the safe production of the mine.In order to improve the mining efficiency and make full use of the air supply of the working face,the controllable circulating ventilation technology is used to optimize the ventilation system of the mine.The wind speed and gas concentration distribution of the working face under the circulating ventilation scheme after the transformation are studied through numerical simulation.The field practice has achieved good results,which proves the accuracy of the numerical simulation results and good ventilation effect,that is,achieves the goal of energy saving and consumption reduction and ensures the safe production of the mine.