井下多级机站并联回风系统风流特性研究  

Study on flow properties of parallel return air system of underground multistage fan station ventilation system

作　　者：陆秋琴[1] 黄光球[1] 

机构地区：[1]西安建筑科技大学管理学院,陕西西安710055

出　　处：《化工矿物与加工》2012年第12期23-27,共5页Industrial Minerals & Processing

基　　金：陕西省科学技术研究发展计划项目(2011K06-08);陕西省教育厅科技计划项目(编号:12JK0789)

摘　　要：为了找到井下多级机站并联回风系统通风效率低的原因并提出相应的解决方案,运用CFD技术对井下多级机站并联回风系统的风流特性进行了研究,结果发现:各通风中段回风联巷间风机运行相互干扰严重,导致整个回风系统失效,从而大幅降低井下多级机站的通风效果。该问题的解决方案是:将各装机中段回风联巷与回风天井之间改为45°连接,使风流到达回风天井后方向向上,可大幅减少风流动能损失,从而使各中段风机运行相互干扰程度大幅降低甚至消除。该解决方案通过了理论计算验证和实践验证。To find the reasons of low efficiency of parallel return air system of underground multistage fan station ventilation system and obtain a suitable solution, the CFD technique is applied to study the flow properties of parallel return air system of underground multistage fan station ventilation system, the resuits show that the fan operations are strongly disturbed between any two adjacent return air roadways, the interference is so heavy as to make the all return air system fail, and thus reduce the ventilation effect of whole underground multistage fan station ventilation system. The best solution to the problem is that the link angle between a return roadway and a return shaft should be 45° upward so that air flow can move upward after it reaches the return shaft, then the interference of fan operations between any two adjacent return roadways can be reduce to be very low or eliminated. The solution proved to be correct by theoretical computation and engineering practice.

关 键 词：地下开采 多级机站 通风系统 计算流体动力学 

分 类 号：TD724.3[矿业工程—矿井通风与安全]