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1、江门市区暴雨强度公式及计算图表江门市水务局江门市气象局广东省气候中心二零一五年十二月1. 本计算图表以新会国家气象观测站35年（19802014年）连续自记雨量记录为基础，利用国内先进的“降水数字化处理系统”得到高精度的原始数据，采用年最大值法进行编制。2. 以重现期2、3、5、10、20、30、50、100（年）相应的单一重现期暴雨强度公式制表。设计暴雨强度可按选定设计重现期直接查用表列数值（单一重现期暴雨强度公式见表）O3. 若采用其它重现期，设计暴雨强度可用重现期区间参数公式计算：167Aq（t+b）n式中：q设计暴雨强度（升/秒公顷）t降雨历时（分钟）A雨力b、n地方常数（A、b、n按
2、重现期区间参数公式计算，公式见表二）4. 考虑到绘制全国城市暴雨强度公式等值线图，列出包含重现期在内的暴雨强度总公式：2283.662（1+1.128LgP）q（r+11.663）0.662因总公式精度不及重现期区间参数公式，故建议推求其它重现期设计暴雨强度时使用区间参数公式。应用重现期区间参数公式计算暴雨强度实例:求P二25年,t=50分钟的暴雨强度q。从重现期区间参数公式II,得：n=0.719-0.078Lg(P-4.527)=0.61635(取0.616)b二13.953-4.138Lg(P-6.185)=8.67943(取8.679)A=21.737-2.945Lg(P-6.737)
3、=18.02166(取18.022)配得p=25年的暴雨强度计算公式如下:167x18.022q=(t+8.679)o.6i6可按上式计算1200分钟中任何时段的暴雨强度。当t二50：=244.982(升/秒/公顷)167x18.022(50+8.679)0.6165. 公式误差重现期220年的暴雨强度公式算得的平均绝对均方差为：0.025(mm/min),平均相对均方差为：1.97%。精度符合室外排水设计规范(GB500142006,2014年版)提出的要求。表二重现期区间暴雨强度公式重现期P（年）公式P=24830.308/(t+17.044)。歸P=34359.535/(t+15.633
6、.71381121.580107100.65513386.39215975.9874418.31430219.25756153.99882120.594108100.00813485.93216075.6425403.00731215.58557152.32683119.62510999.37013585.47816175.3016388.90332212.04858150.69484118.67311098.74113685.02916274.9637375.86033208.63959149.10185117.73811198.12213784.58616374.6298363.76134
7、205.35060147.54586116.82011297.51113884.14716474.2979352.50235202.17661146.02587115.91811396.90813983.71416573.97010341.99736199.10962144.53988115.03111496.31414083.28616673.64511332.16937196.14663143.08889114.15911595.72814182.86216773.32312322.95438193.27964141.66890113.30211695.15014282.44416873.
8、00513314.29339190.50565140.28091112.45911794.57914382.03016972.69014306.13840187.81866138.92292111.63011894.01614481.62017072.37815298.44241185.21667137.59393110.81511993.46114581.21617172.06816291.16842182.69268136.29294110.01312092.91314680.81517271.76217284.28043180.24569135.01995109.22312192.372
9、14780.42017371.45918277.74744177.87070133.77296108.44712291.83814880.02817471.15819271.54345175.56571132.55097107.68312391.31114979.64117570.86020265.64146173.32572131.35498106.93012490.79115079.25817670.56621260.01947171.14873130.18199106.19012590.27715178.87917770.27322254.65848169.03274129.032100
10、105.46112689.77015278.50417869.98423249.53849166.97475127.905101104.74312789.27015378.13317969.69724244.64450164.97176126.800102104.03612888.77515477.76618069.41325239.96151163.02177125.716103103.33912988.28715577.40318169.13126235.47452161.12378124.653104102.65313087.80415677.04318268.852tqtqtqtqtq
11、tqtq1514.63927251.67153175.25779137.293105114.16313198.42515786.9412492.30328247.27554173.34180136.200106113.44913297.91815886.5603472.09029243.05355171.47281135.128107112.74513397.41715986.1844453.70230238.99556169.65082134.075108112.05213496.92116085.8105436.89131235.08957167.87283133.040109111.36
12、813596.43216185.4416421.45532231.32958166.13784132.024110110.69313695.94816285.0757407.22733227.70559164.44285131.026111110.02813795.47016384.7138394.06334224.21060162.78786130.045112109.37313894.99716484.3549381.84535220.83661161.17087129.081113108.72613994.53016583.99910370.47036217.57862159.59088
13、128.133114108.08814094.06816683.64711359.84937214.42963158.04589127.201115107.45814193.61116783.29912349.90938211.38464156.53490126.285116106.83714293.16016882.95413340.58239208.43765155.05791125.384117106.22514392.71316982.61214331.81140205.58366153.61192124.498118105.62014492.27117082.27415323.546
14、41202.81867152.19693123.626119105.02314591.83417181.93916315.74342200.13868150.81194122.768120104.43414691.40217281.60717308.36243197.53969149.45595121.924121103.85314790.97517381.27818301.36944195.01670148.12796121.093122103.27914890.55217480.95219294.73245192.56771146.82597120.275123102.71214990.1
15、3417580.62920288.42546190.18872145.55098119.469124102.15315089.72017680.30921282.42147187.87573144.30099118.677125101.60015189.31017779.99222276.69948185.62774143.075100117.896126101.05415288.90517879.67823271.23949183.44075141.874101117.127127100.51515388.50417979.36624266.02250181.31276140.6961021
16、16.36912899.98315488.10718079.05825261.03151179.24177139.540103115.62312999.45715587.71518178.75226256.25252177.22378138.406104114.88813098.93815687.32618278.449P=6（年）t:分钟；q:升/秒/公顷tqtqtqtqtqtqtq1562.28227274.19453193.18779152.928105128.293131111.44615799.0932536.91028269.52254191.15880151.767106127.
17、531132110.90215898.6823514.12829265.03655189.17981150.627107126.779133110.36415998.2754493.53930260.72656187.24982149.508108126.038134109.83216097.8735474.82731256.58057185.36583148.408109125.307135109.30716197.4746457.73532252.59058183.52784147.327110124.586136108.78716297.0797442.05233248.74659181
18、.73185146.265111123.875137108.27316396.6888427.60134245.03960179.97786145.221112123.174138107.76516496.3019414.23635241.46261178.26487144.195113122.482139107.26316595.91810401.83436238.00962176.58988143.187114121.800140106.76716695.53811390.28837234.67263174.95189142.195115121.127141106.27616795.161
19、12379.50938231.44564173.35090141.219116120.462142105.79016894.78913369.41939228.32365171.78391140.260117119.806143105.30916994.41914359.95140225.30066170.25092139.316118119.159144104.83417094.05415351.04641222.37267168.75093138.387119118.520145104.36417193.69116342.65342219.53368167.28194137.4731201
20、17.889146103.89917293.33217334.72743216.78169165.84295136.573121117.266147103.43917392.97618327.22844214.10970164.43296135.687122116.651148102.98417492.62419320.12145211.51671163.05197134.815123116.044149102.53317592.27520313.37446208.99772161.69898133.956124115.445150102.08717691.92821306.95947206.
21、54973160.37199133.111125114.852151101.64617791.58522300.85048204.16874159.071100132.278126114.267152101.21017891.24523295.02749201.85375157.795101131.457127113.689153100.77817990.90824289.46750199.59976156.544102130.649128113.118154100.35018090.57425284.15251197.40677155.316103129.852129112.55415599
22、.92718190.24326279.06652195.26978154.111104129.067130111.99715699.50818289.915P=11（年）t:分钟；q:升/秒/公顷tqtqtqtqtqtqtq1634.52527302.16553214.90979171.826105145.421131127.297157113.9522603.16428297.09254212.73780170.583106144.602132126.710158113.5073575.42729292.22955210.61881169.363107143.794133126.130159
23、113.0674550.68730287.56056208.55282168.164108142.998134125.556160112.6315528.45831283.07557206.53683166.986109142.213135124.989161112.1996508.35332278.76158204.56884165.829110141.438136124.429162111.7717490.06633274.60959202.64785164.692111140.675137123.874163111.3478473.34734270.60960200.77086163.5
24、74112139.921138123.326164110.9289457.99135266.75261198.93687162.475113139.177139122.784165110.51210443.82836263.03062197.14488161.394114138.443140122.248166110.10011430.71737259.43663195.39289160.331115137.719141121.718167109.69212418.53738255.96364193.67990159.286116137.005142121.193168109.28813407
25、.18839252.60465192.00391158.257117136.299143120.674169108.88714396.58140249.35466190.36292157.245118135.603144120.161170108.49115386.64241246.20867188.75793156.249119134.915145119.653171108.09716377.30742243.15968187.18594155.269120134.237146119.150172107.70817368.51743240.20369185.64695154.30512113
26、3.566147118.653173107.32218360.22544237.33670184.13896153.355122132.904148118.161174106.93919352.38745234.55371182.66097152.419123132.251149117.674175106.56020344.96346231.85172181.21298151.498124131.605150117.192176106.18421337.92047229.22673179.79399150.591125130.967151116.715177105.81122331.22848
27、226.67474178.401100149.697126130.337152116.243178105.44223324.85949224.19275177.035101148.817127129.714153115.775179105.07624318.78950221.77876175.696102147.949128129.099154115.313180104.71325312.99651219.42777174.382103147.094129128.491155114.854181104.35326307.46052217.13978173.092104146.251130127
28、.890156114.401182103.996P=21（年）t:分钟；q:升/秒/公顷tqtqtqtqtqtqtq1717.71227325.27553231.84679186.335105158.520131139.423157125.3412677.02828319.77954229.54480185.025106157.657132138.804158124.8713641.83829314.51755227.30081183.739107156.807133138.192159124.4064611.03530309.47556225.11382182.475108155.96813
29、4137.587160123.9455583.79931304.63757222.97983181.234109155.141135136.989161123.4896559.50832299.99158220.89784180.015110154.325136136.398162123.0377537.67833295.52559218.86585178.817111153.520137135.814163122.5908517.93134291.22760216.88186177.639112152.726138135.235164122.1469499.96435287.08961214
30、.94387176.481113151.943139134.664165121.70710483.53036283.09962213.04988175.343114151.170140134.098166121.27111468.43037279.25063211.19889174.223115150.407141133.539167120.84012454.49738275.53564209.38890173.122116149.654142132.985168120.41313441.59139271.94565207.61891172.039117148.911143132.438169
31、119.99014429.59640268.47466205.88692170.973118148.177144131.896170119.57015418.41241265.11667204.19193169.925119147.453145131.360171119.15416407.95442261.86468202.53294168.892120146.738146130.830172118.74217398.14943258.71569200.90895167.876121146.031147130.305173118.33418388.93444255.66270199.31796
32、166.876122145.334148129.785174117.92919380.25345252.70171197.75897165.891123144.645149129.271175117.52820372.05746249.82772196.23098164.921124143.964150128.762176117.13121364.30647247.03773194.73399163.965125143.292151128.259177116.73722356.96048244.32674193.265100163.024126142.628152127.760178116.3
33、4623349.98749241.69175191.826101162.096127141.971153127.267179115.95924343.35750239.12876190.414102161.183128141.323154126.778180115.57525337.04451236.63677189.029103160.282129140.682155126.294181115.19426331.02452234.20978187.669104159.395130140.049156125.815182114.816P=31（年）t:分钟；q:升/秒/公顷tqtqtqtqtq
34、tqtq1762.83827337.84653241.33079194.554105165.982131146.353157131.8642716.63628332.14054238.96180193.208106165.096132145.717158131.3803677.16029326.68255236.65481191.887107164.222133145.087159130.9014642.95430321.45556234.40482190.590108163.360134144.465160130.4275612.96431316.44357232.21083189.3151
35、09162.510135143.850161129.9576586.40732311.63258230.06984188.063110161.672136143.242162129.4927562.68933307.01059227.98085186.832111160.845137142.641163129.0318541.34834302.56560225.94086185.622112160.029138142.046164128.5749522.02035298.28561223.94787184.433113159.224139141.458165128.12210504.41536
36、294.16262222.00088183.264114158.430140140.876166127.67311488.29637290.18763220.09889182.114115157.646141140.301167127.22912473.47038286.35064218.23890180.983116156.872142139.731168126.78913459.77839282.64465216.41991179.870117156.108143139.168169126.35314447.08440279.06266214.63992178.775118155.3541
37、44138.611170125.92115435.27641275.59867212.89793177.698119154.609145138.059171125.49316424.25742272.24568211.19394176.638120153.874146137.513172125.06817413.94643268.99869209.52495175.594121153.148147136.973173124.64818404.27244265.85270207.88996174.566122152.431148136.439174124.23119395.17345262.80071206.28897173.5
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