考虑随机风影响的隧道通风量计算
Calculation of tunnel ventilation considering influence of random wind
王立军 1路建强 1林海成 1韦建锋 1柳伟1
作者信息
- 1. 中交基础设施养护集团宁夏工程有限公司,宁夏 银川 750001
- 折叠
摘要
现有隧道内通风量计算偏保守,往往需开启更多风机,导致能源浪费严重.本文提出一种考虑随机自然风影响下的隧道内通风量计算方法.将风频引入隧道通风量计算中,指出隧道内风频的两种表示方法,离散型风频分布和韦布尔风频分布,通过最小误差逼近算法计算韦布尔风频分布中的尺度系数A和形状系数K.通过算例可得,进口处考虑随机风比不考虑随机风的通风量多37.8%,说明考虑随机风影响可明显降低风机开启数量.
Abstract
The current ventilation calculation in tunnels is conservative,often requiring more fans to be turned on,resulting in serious energy waste.This paper proposes a ventilation calculation method for tunnels considering the influence of random natural wind.Introducing wind frequency into the calculation of tunnel ventilation,two representation methods for wind frequency inside the tunnel are pointed out,namely discrete wind frequency distribution and Weibull wind frequency distribution.The scale coefficient A and shape coefficient K in the Weibull wind frequency distribution are calculated using the minimum error approximation algorithm.Through the example,it can be concluded that the ventilation volume considering the random wind at the inlet is 37.8%more than that without considering the random wind,indicating that considering the influence of random wind can reduce the number of fan openings.
关键词
隧道通风/自然风/风频/需风量Key words
tunnel ventilation/natural wind/wind frequency/air volume required引用本文复制引用
基金项目
宁夏回族自治区重点研发计划(2021BDE13005)
宁夏回族自治区青年科技人才托举工程项目([2023]6)
出版年
2024
NETL
NSTL
万方数据