隧道通风设计计算

基本资料道路等级：高速公路，分离式双向四车道设计时速=100km/h=27.78m/s右线隧道长度L＝1300m纵坡i＝2.0%L1=1300左线隧道长度L＝0m纵坡-i＝-1.5%L2=0隧道断面积Ar＝68m2隧道当量直径D＝8.41m设计交通量：近期2990中期4004远期7872高峰小时交通量按日交通量的：14%交通组成：汽油车：小轿车100%小型客车0%小型货车0%中型货车柴油车：中型货车100%大型客车0%大型货车0%空气密度：ρ＝1.2Kg/m3隧道内平均气温：tm＝20℃隧址处自然风风速：vn＝2m/s隧道沿程摩擦阻力系数λ＝0.022进口局部阻力系数ζ＝0.600海拔高度H1=92H2=111.50H3=111.50通风方式近期单洞设计高峰小时交通量为：230辆/h中期单洞设计高峰小时交通量为：308辆/h远期单洞设计高峰小时交通量为：606辆/h其中汽油车：小轿车230小型客车0小型货车0中型货车柴油车：中型货车230大型客车0大型货车0汽油车：小轿车308小型客车0小型货车0中型货车柴油车：中型货车308大型客车0大型货车0汽油车：小轿车606小型客车0小型货车0中型货车柴油车：中型货车606大型客车0大型货车0L*N=7.88E+052.00E+06所以初步判定需要机械通风需风量计算co设计浓度δ=250+50+(1300-1000)*(200-250)/(3000-1000)=292.5ppm交通阻滞是co设计浓度：300ppm烟雾设计浓度K=0.10065m-1近期co的sum(Nm*fm)=168*1.0+126*1.0+126*2.5+126*5.0+126+84+84=460.5近期中期远期中期co的sum(Nm*fm)=284*1.0+213*1.0+213*2.5+213*5.0+213+142+142=616.6远期co的sum(Nm*fm)=387*1.0+290*1.0+290*2.5+290*5.0+290+193+193=1212.3近期烟雾的sum(Nm*fm)=126*1.0+84*1.5+84*1.5=230.2中期烟雾的sum(Nm*fm)=213*1.0+142*1.5+142*1.5=308.3远期烟雾的sum(Nm*fm)=290*1.0+193*1.5+193*1.5=606.1co排放量计算qco=0.01fa=1fh1=0.834第一段平均海拔高度=(92+111.49)/2=101.749fh2=0.834第二段平均海拔高度=(92+111.49)/2=101.7491008060402010i=1.5%1.41.11110.8i=-1.5%1.21110.80.80.60.7511.536隧道co排放量Qco(i=1.5%)1008060402010Qco(i=-1.5%)100近期0.001170.001140.001390.002080.004160.00512近期0.00000中期0.001560.001530.001860.002790.005570.00686中期0.00000远期0.003070.003010.003650.005480.010960.01349远期0.00000隧道稀释co需风量基本资料道路等级：高速公路，分离式双向四车道设计时速=100km/h=27.78m/s右线隧道长度L＝1300m纵坡i＝1.5%L1=1300左线隧道长度L＝0m纵坡-i＝-1.5%L2=0隧道断面积Ar＝68m2隧道当量直径D＝8.41m设计交通量：近期2990中期4004远期7872高峰小时交通量按日交通量的：14%交通组成：汽油车：小轿车100%小型客车0%小型货车0%中型货车柴油车：中型货车100%大型客车0%大型货车0%空气密度：ρ＝1.2Kg/m3fiv工况车速（Km/h)fd隧道内平均气温：tm＝20℃隧址处自然风风速：vn＝2m/s隧道沿程摩擦阻力系数λ＝0.022进口局部阻力系数ζ＝0.600海拔高度H1=92H2=111.50H3=111.50通风方式近期单洞设计高峰小时交通量为：230辆/h中期单洞设计高峰小时交通量为：308辆/h远期单洞设计高峰小时交通量为：606辆/h其中汽油车：小轿车230小型客车0小型货车0中型货车柴油车：中型货车230大型客车0大型货车0汽油车：小轿车308小型客车0小型货车0中型货车柴油车：中型货车308大型客车0大型货车0汽油车：小轿车606小型客车0小型货车0中型货车柴油车：中型货车606大型客车0大型货车0L*N=7.88E+052.00E+06所以初步判定需要机械通风需风量计算co设计浓度δ=250+50+(1300-1000)*(200-250)/(3000-1000)=292.5ppm交通阻滞是co设计浓度：300ppm烟雾设计浓度K=0.10065m-1近期co的sum(Nm*fm)=168*1.0+126*1.0+126*2.5+126*5.0+126+84+84=460.5中期co的sum(Nm*fm)=284*1.0+213*1.0+213*2.5+213*5.0+213+142+142=616.6远期co的sum(Nm*fm)=387*1.0+290*1.0+290*2.5+290*5.0+290+193+193=1212.3近期烟雾的sum(Nm*fm)=126*1.0+84*1.5+84*1.5=230.2中期烟雾的sum(Nm*fm)=213*1.0+142*1.5+142*1.5=308.3中期近期远期远期烟雾的sum(Nm*fm)=290*1.0+193*1.5+193*1.5=606.1co排放量计算qco=0.01fa=1fh1=0.834第一段平均海拔高度=(92+111.49)/2=101.749fh2=0.834第二段平均海拔高度=(92+111.49)/2=101.7491008060402010i=1.5%1.41.11110.8i=-1.5%1.21110.80.80.60.7511.536隧道co排放量Qco(i=1.5%)1008060402010Qco(i=-1.5%)100近期0.001170.001140.001390.002080.004160.00512近期0.00000中期0.001560.001530.001860.002790.005570.00686中期0.00000远期0.003070.003010.003650.005480.010960.01349远期0.00000隧道稀释co需风量δ=300Po=101.325To=273T=293P=102.5349参数vtn+Δpt右Δpt左803.7412375#VALUE!0603.7412375#VALUE!0403.7412375#VALUE!0203.7412375#VALUE!0103.7412375#VALUE!0805.01000500605.01000500405.01000500205.01000500105.01000500809.84984001007.879872609.8498400409.8498400209.8498400109.8498400Δp=Δpr+Δpn-Δpt参数vtΔpnΔpr右Δpr左Δpt右Δpt左Δp右Δp左800.00114448911#VALUE!0#VALUE!1.001144489600.00114448911#VALUE!0#VALUE!1.001144489400.00114448911#VALUE!0#VALUE!1.001144489200.00114448911#VALUE!0#VALUE!1.001144489100.00114448911#VALUE!0#VALUE!1.001144489800.0011444890.751000.751144491.001144489600.0011444890.751000.751144491.001144489400.0011444890.751000.751144491.001144489200.0011444890.751000.751144491.001144489100.0011444890.751000.751144491.001144489800.001144489010000.0011444910.00114449中期远期近期fdfiv工况车速（Km/h)近期中期远期600.001144489010000.0011444910.00114449400.001144489010000.0011444910.00114449200.001144489010000.0011444910.00114449100.001144489010000.0011444910.00114449通风机台数计算及布置机号(No)6390100112125140轴向推力(N)245～515390～840530～1095695～1340845～1665645～1330流量(m3/s)8,6～12.315.4～22.320～28.525.8～35.531.8～9431～44最小间距(m)80100150150180180叶轮直径(mm)6309001000112012501400Aj(m2)0.3117245310.636172510.7853981630.985203461.227184631.5393804φ0.0045808160.00934860.0115414870.014477640.018033570.02262131出口风速(m/s)27.6～39.524.2～35.125.5～36.326.2～3625.9～35.920.1～28.6vj(m/s)39.535.136.33635.928.6Ψ右0.0211216440.023769370.0229836070.023175140.023239690.0291715Ψ左000000Δpj右(N/m2)8.39550865813.4925717.8302773421.993824227.242058721.5562718Δpj左(N/m2)8.57666185913.821088618.2497217822.51562727.890218822.2039957近期i#VALUE!#VALUE!#VALUE!#VALUE!#VALUE!#VALUE!中期i0.089取整为10.055取整为10.042取整为10.034取整为10.027取整为10.034取整为1远期i0.000取整为18.482取整为16.418取整为15.203取整为10.000取整为15.309取整为1近期i0.116取整为10.072取整为10.054取整为10.044取整为10.035取整为10.045取整为1中期i0.116取整为10.072取整为10.054取整为10.044取整为10.035取整为10.045取整为1远期i1.166取整为20.723取整为10.548取整为10.444取整为10.358取整为10.450取整为1近期轴向推力计算为(N/台)#VALUE!#VALUE!#VALUE!#VALUE!#VALUE!#VALUE!中期轴向推力计算为(N/台)25.5576912325.557691225.5576912325.557691225.557691225.5576912远期轴向推力计算为(N/台)0.038941230.038941230.038941230.038941230.038941230.03894123近期轴向推力计算为(N/台)34.0639412334.063941234.0639412334.063941234.063941234.0639412中期轴向推力计算为(N/台)34.0639412334.063941234.0639412334.063941234.063941234.06394