等截面送风管道静压分布和风口等量率计算

Calculation of Static Pressure Distribution and Air Isometric Rate at Opening of Air Inlet Duct with Constant Cross Section

本文介绍了等截面多风口送风管道内静压分布基本式理论推导和风口等量率计算方法,着重对工程实践中应用较多的大阻力管道和小阻力管道压力分布特性进行分析比较,并根据实际地下工程测定数据验证其理论计算可靠性,可供道路隧道等量送风长管道和轨交地下车站站厅站台公共区、设备管理用房等量送风管道设计计算和工程调试作借鉴和参考。

This paper makes an introduction to the theoretical derivation of static pressure distribution basic formula in the air inlet duct with constant cross-section and multi-opening and the calculation method of air isometric rate at opening. Analysis and comparisons are made to the pressure distribution characteristics in duct with big resistance and that with small resistance. The data from the actual underground engineering are used to verify the reliability of the theoretical calculation results. The paper can be referred for design calculation and engineering commissioning of long isometric air inlet duct for road tunnel,and isometric inlet duct for public area of platform,station concourse and equipment room of underground station.