暴雨产流计算(推理公式广东省)

流域面积F河道长度L河道比降J暴雨频率Pkm2km实际值%θm29539.560.00271284.101.104点雨量均值点面系数Ht(mm)αt1h670.413.52.350.7626h1230.473.52.600.84224h1780.523.52.830.90472h2450.513.52.780.935汇流参数分区产流参数分区雨型分区点面关系分区高丘区内陆北江上游暴雨低区H6H24-H6H3d-H24τ时段降雨(mm)∑hN(mm)269.68185.07182.09306.24317.16计算24小时设计雨量的时程分配时程(h)12345毛雨深(mm)8.8811.4717.4013.1417.21净雨深ht(mm)4.386.9712.908.6412.71ht排序(mm)65.0845.6630.5623.0133.53∑ht(mm)65.08110.74141.30164.31197.84Q试算(m3/s)53374541386333693245t反算(h)8.378.719.079.399.48时段时程(h)12345占H6%占(H24-H6)%4.86.29.47.19.3汇流参数m与流域特征系数θ关系见下表m～θ分区计算结果θ＜100θ≥100海南1.331.161.33低丘平原0.880.740.88高丘区1.100.951.10山区1.811.621.81推理公式法求暴雨径流洪峰流量（广东省水文手册）（图解法求汇流时间τ）汇流参数时段CvCs/CvKP最大24小时降雨概化过程线广东省暴雨点面关系表：设计暴雨的αt～流域面积F（km2）～t12345t10203040501h0.9760.960.9450.9310.926h0.9870.97950.97060.96250.95624h10.98850.9830.980.9763d110.98860.9850.983广东省产流分区fc、f3d参数表fc(mm/h)f3d(mm/h)fc(mm/h)f3d(mm/h)fc(mm/h)内陆4.52.54.52.55粤东沿海、珠江三角洲42.742.74.5粤西沿海52.952.95.5琼雷台地7.537.538海南山丘区4.32.94.32.9524h暴雨洪水概化过程线径流历时tQt/Qmht/τQt/Qm51.0055.06247.70.40.161.142477.11171.28272.520.1181.4299.130.0491.554分段单元洪水过程线的推求洪峰排序净雨量ht降雨历时t单元洪水总量单元洪峰历时单元洪峰流量mmhWi(万m3)τ+N(h)Qmi(m3/s)第1d32.4724957.935152.1hτ前35.1731037.614411.7第2d75.41242224.635353.1hτ后11.8110348.42192.2第3d306.24119034.0222281.3起始峰顶终止F（km2）分区降雨面积F(km2)＞100降雨面积F(km2)＜100计算结果暴雨历时广东省概化洪水过程线表洪峰序号时间t(h)2435流量(m3/s)152.1时间t(h)485162流量(m3/s)411.7时间t(h)244859流量(m3/s)353.1时间t(h)627383流量(m3/s)92.2时间t(h)516273流量(m3/s)2281.3《广东省暴雨径流查算图表》分区与暴雨、产流、汇流分区对应表推理公式Ⅰ韩江韩江暴雨低区内陆大陆Ⅱ粤东沿海粤东沿海暴雨高区粤东沿海、珠江三角洲大陆Ⅲ东江上游东江上游暴雨低区内陆大陆Ⅳ东江中下游东江中下游暴雨低区内陆大陆Ⅴ北江上游北江上游暴雨低区内陆大陆Ⅵ北江中下游北江中下游暴雨低区内陆大陆Ⅶ1珠江三角洲珠江三角洲暴雨低区粤东沿海、珠江三角洲大陆Ⅶ2流溪河、增江珠江三角洲暴雨低区内陆大陆Ⅶ3潭江珠江三角洲暴雨高区粤西沿海大陆Ⅷ西江西江暴雨低区内陆大陆Ⅸ1漠阳江粤西沿海暴雨低区粤西沿海大陆Ⅸ2鉴江、九州江粤西沿海暴雨低区粤西沿海大陆Ⅹ雷州半岛雷州半岛暴雨低区琼雷台地大陆Ⅺ1琼北地区海南岛暴雨低区琼雷台地海南Ⅺ2海南丘陵海南岛暴雨高区海南山丘区海南Ⅺ3海南山区海南岛暴雨高区海南山丘区海南广东省分区最大24h设计雨型（暴雨时程分配）表雨型分区时间(h)1234韩江占H6%《广东省暴雨径流查算图表》分区暴雨、产流、汇流分区雨型分区设计暴雨定点定面关系（α～t～F关系）产流m～θ第2dhτ后第3d第1dhτ前粤东沿海占H6%东江上游占H6%东江中下游占H6%北江上游占H6%北江中下游占H6%珠江三角洲占H6%西江占H6%粤西沿海占H6%雷州半岛占H6%海南岛占H6%韩江占(H24-H6)%7.54.44.75.2粤东沿海占(H24-H6)%3.72.44.34东江上游占(H24-H6)%4.16.13.40.5东江中下游占(H24-H6)%2.32.823.1北江上游占(H24-H6)%4.86.29.47.1北江中下游占(H24-H6)%7.27.235.3珠江三角洲占(H24-H6)%1.52.93.68.8西江占(H24-H6)%55.54.97.7粤西沿海占(H24-H6)%4.34.13.23雷州半岛占(H24-H6)%4.80.92.11.5海南岛占(H24-H6)%2.94.33.13.3广东省分区最大3d设计雨型（暴雨时程分配）表雨型分区时间(6h)1d2d3d1韩江占H6%粤东沿海占H6%东江上游占H6%东江中下游占H6%北江上游占H6%北江中下游占H6%珠江三角洲占H6%西江占H6%粤西沿海占H6%雷州半岛占H6%海南岛占H6%韩江占(H24-H6)%粤东沿海占(H24-H6)%东江上游占(H24-H6)%东江中下游占(H24-H6)%北江上游占(H24-H6)%北江中下游占(H24-H6)%珠江三角洲占(H24-H6)%西江占(H24-H6)%粤西沿海占(H24-H6)%雷州半岛占(H24-H6)%海南岛占(H24-H6)%韩江占(H3d-H24)%59.840.24.6粤东沿海占(H3d-H24)%38.461.62.7东江上游占(H3d-H24)%52.547.514.3东江中下游占(H3d-H24)%73.526.59.9北江上游占(H3d-H24)%30.169.95.5北江中下游占(H3d-H24)%34.465.611.6珠江三角洲占(H3d-H24)%63.336.712.3西江占(H3d-H24)%69.330.73.8粤西沿海占(H3d-H24)%51.348.77.1雷州半岛占(H3d-H24)%51.848.214.5海南岛占(H3d-H24)%45.354.79.7集雨区设计暴雨的αt～流域面积F（km2）～t暴雨历时t10203040暴雨低区1h0.9760.960.9450.931暴雨高区1h0.9680.9470.930.914暴雨低区6h0.9870.97950.97060.9625暴雨高区6h0.9820.9680.9570.946暴雨低区24h10.98850.9830.98暴雨高区24h10.9860.9810.974暴雨低区3d110.98860.985暴雨高区3d10.9910.9840.979F（km2）点面关系分区衰减指数计算1-6h6-24hfcf3dβ0.440.594.502.5n0.550.62面雨量设计值Sp考虑雨程分配一查图法成果PtP(mm)(mm/h)汇流时间洪峰流量汇流时间洪峰流量119.99τ(h)Q地面max(m3/s)τ（h）QPm(m³/s)269.6810.14247710.382250454.75137.35636.841-6h6-24h汇流时间τ（h）10.2410.38洪峰流量QPm(m³/s)23812250△h(mm)τ1(h)τ0(h)N(h)10.9233116789101122.3969.5850.1635.0627.5138.0317.8965.0845.6630.5623.0133.5344.8522.3317.8912.718.6412.90242.69265.02282.91295.62304.26317.163317310529002694249523659.429.589.759.9310.1210.266789101125.818.613.010.214.112.1产流参数(mm/h)最大24小时降雨概化过程线公式法直接求解公式法直接求解过程67891011607080901002000.9060.8940.8840.8740.8620.8030.94750.940.9350.9280.92250.87750.9720.9680.9640.9610.9570.9280.98050.97750.9750.97250.970.951f3d(mm/h)2.52.72.932.9F（km2）降雨面积F(km2)＜100雨型分区5韩江1粤东沿海2东江上游3东江中下游4北江上游5北江中下游6珠江三角洲7西江8粤西沿海9雷州半岛10海南岛11点面关系分区暴雨高区暴雨低区567891013.312.417.223.421.121.620.810.525.818.61310.210.916.619.720.513.416.110.717.43.73.43.56.45.73.85.76.478.77.55.72.96.52.33.99.312.11.7233.36.96.610.711.39.91321.92.86.15.88.61.94.92.73.82.32.74.34.55.65.47.410.223456710010010010010010010010010010028.935.826.541.523.550.816.45226.438.338.842462918.549.316.130.922.449.51.923.429.94.711.319.713.9717.39.215.139.313.66.64.417.619.97.41.313.18.416.110.92424.215.925.410.613.120.514.510.8126.814.414.450607080901000.920.9060.8940.8840.8740.8620.8980.8840.8720.8570.8450.8370.9560.94750.940.9350.9280.92250.9350.9250.9170.9060.8960.890.9760.9720.9680.9640.9610.9570.9690.9640.9580.9510.9470.9430.9830.98050.97750.9750.97250.970.9740.970.9660.960.9570.953F（km2）121314151617181949.3526.8313.146.484.816.484.818.1444.8522.338.641.980.311.980.313.648.646.974.381.980.311.980.313.64325.80332.77337.15339.13339.44341.42341.73345.372227209919751854174016471557149110.4110.5710.7310.9011.0711.2311.3911.51121314151617181918.314.57.13.52.63.52.64.4最大24小时降雨概化过程线050010001500200025000102030405060708090Q(m3/s)t(h)图表标题121314151617181930040050060070080090010000.760.7340.7130.6960.680.6660.6520.640.840.820.8050.790.7780.7660.7550.7450.9030.8880.8760.8660.8560.847