玉溪市中心城区暴雨强度公式(修订)

玉溪市中心城区暴雨强度公式（修订）

1.总则

1.1 编制的必要性和目的

城市暴雨强度公式编制是城市室外排水工程规划设计的重要基础性工作。我国已经进入高速城市化时期，特大城市和城市群的出现，城市“热岛效应”凸现。城市降雨特征会发生局地性变化。已有数据表明，部分城市每隔10年左右出现超过历史记录的特大暴雨，玉溪近年来突发性、短时特大暴雨频发。依据水文气象频率分析的理论，基于已有的降雨记录数据，采用数理统计的方法得到的城市暴雨量、暴雨强度、降雨历时、时间空间的分布等，是科学表达城市降雨规律的一种方法，同时要认识到这种方法的科学性和局限性，以指导具体工作。 城市财富的聚集和市民生活水平的提高、城市地下空间的开发利用等因素使得城市对灾害的承受能力趋弱，降雨特征的趋势性变化对城市的防灾减灾提出挑战。新建、扩建城市室外排水设施的规划建设以及已建城市排水设施历史欠账问题的解决，都需要对城市降雨规律进行科学表达和定量分析。因此，开展城市暴雨强度公式的编制及修编是非常必要的。

为了适用国家需求和玉溪城市发展需求，指导城市暴雨

强度公式的编制及修编，特编制本编制玉溪本地暴雨强度公式。

1.2条款涉及的国家颁布的有关标准如下（但不限于） （1）《室外排水设计规范》（GB50014－2006，2013年版） （2）《地面气象观测规范》（QX/T 52-2007）

（3）《地面气候资料30 年整编常规项目及其统计方法》（QX/T 22-2004） （4）《地面气象观测资料质量控制》（QX/T 118-2010） （5）《数值修约规则与极限数值的表示和判定》（GB/T 8170-2008） （6）《水利水电工程设计洪水计算规范》（SL44-93） （7）《城市排水工程规划规范》（GB 50318-2000） （8）《建筑给水排水设计规范》（GB 50015-2003） （9）《公路排水设计规范》（JTJ 018-97） 2.资料及方法 降雨资料是暴雨强度公式推算的基础，暴雨强度公式及查算图表编制应以国家气象站自记降雨资料为依据，资料使用玉溪市红塔区国家基本气象站1981年1月至2014年12月逐分钟降水自记资料。降雨资料完整、合理，所用资料真实可靠。

暴雨强度公式及计算图表的编制国家相关规范推荐的方法基础上进行推算，推算方法及过程科学合理，采用滑动

统计降雨历时的年度最大值雨量，滑动步长为1min，降雨频率分布曲线拟合中经用皮尔逊Ⅲ型、指数型、耿贝尔型函数的最小二乘法和高斯牛顿法运算比较。三种函数曲线的最小二乘法均能通过对均方差计算。均能通过平均绝对均方差不宜大于0.05mm/min；在较大降雨强度的地方，平均相对均方差不宜大于5％规定的检验，皮尔逊Ⅲ型、指数型、耿贝尔型函数平均绝对均方差分别为0.032mm/min、0.026mm/min、0.029mm/min。根据技术《导则城市暴雨强度公式编制和设计暴雨雨型确定技术导则》，最终采用皮尔逊Ⅲ型分布曲线拟合，确定玉溪市暴雨强度公式，计算结果的精度能达到国家标准《室外排水设计规范》（GB50014－2006，2013版）规定的要求。 3.暴雨强度公式和图表 3.1暴雨强度公式 暴雨强度算得的平均绝对均方差、平均相对均方差：平均绝对标准差：0.032mm/min平均相对标准差：3.83 %。

3.2玉溪市暴雨强度历时重现期关系曲线图 3.3不同历时强度频率曲线图

3.4暴雨强度查算表

玉溪市中心城区暴雨强度查算表

P=2年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q 1 358.486 37 129.627 73 84.099 109 63.633 2 339.221 38 127.595 74 83.327 110 63.22 3 322.144 39 125.633 75 82.571 111 62.813 4 306. 40 123.738 76 81.83 112 62.412 5 293.174 41 121.906 77 81.104 113 62.017 6 280.766 42 120.134 78 80.393 114 61.627 7 269.483 43 118.419 79 79.695 115 61.243 8 259.173 44 116.758 80 79.011 116 60.8 9 249.711 45 115.149 81 78.34 117 60.49 10 240.995 46 113.5 82 77.681 118 60.122 11 232.935 47 112.076 83 77.035 119 59.758 12 225.459 48 110.608 84 76.401 120 59.4 13 218.503 49 109.182 85 75.779 121 59.046 14 212.013 50 107.797 86 75.168 122 58.697 15 205.942 51 106.451 87 74.568 123 58.353 16 200.249 52 105.143 88 73.978 124 58.013 17 194.9 53 103.87 73.399 125 57.677 18 1.861 102.631 90 72.83 126 57.346 19 185.108 55 101.425 91 72.271 127 57.019 20 180.614 56 100.251 92 71.722 128 56.697 21 176.359 57 99.107 93 71.182 129 56.378 22 172.324 58 97.992 94 70.651 130 56.063 23 168.491 59 96.904 95 70.129 131 55.753 24 1.845 60 95.844 96 69.615 132 55.446 25 161.373 61 94.809 97 69.11 133 55.143 26 158.061 62 93.8 98 68.613 134 .844 27 1.8 63 92.814 99 68.124 135 .8 28 151.875 91.851 100 67.3 136 .256 29 148.981 65 90.911 101 67.169 137 53.967 30 146.209 66 .991 102 66.703 138 53.682 31 143.551 67 .093 103 66.244 139 53.4 32 140.999 68 88.215 104 65.792 140 53.122 33 138.7 69 87.355 105 65.347 141 52.847 34 136.1 70 86.515 106 .909 142 52.575 35 133.92 71 85.692 107 .477 143 52.306 36 131.734 72 84.887 108 .052 144 52.04 t q 145 51.777 146 51.517 147 51.26 148 51.006 149 50.755 150 50.507 151 50.261 152 50.018 153 49.778 1 49. 155 49.305 156 49.072 157 48.842 158 48.614 159 48.388 160 48.165 161 47.944 162 47.726 163 47.509 1 47.295 165 47.083 166 46.873 167 46.666 168 46.46 169 46.256 170 46.055 171 45.855 172 45.657 173 45.462 174 45.268 175 45.076 176 44.885 177 44.697 178 44.51 179 44.325 180 44.142 玉溪市中心城区暴雨强度查算表

P=3年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q t q

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 402.199 380.986 362.137 345.265 330.066 316.294 303.752 292.277 281.734 272.011 263.011 2.656 246.875 239.61 232.809 226.428 220.427 214.773 209.436 204.388 199.606 195.069 190.757 186.655 182.746 179.016 175.4 172.047 168.786 165.66 162.662 159.784 157.018 1.357 151.795 149.328 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 146.949 144.653 142.437 140.296 138.226 136.223 134.285 132.408 130.588 128.824 127.113 125.452 123.839 122.273 120.75 119.269 117.828 116.426 115.061 113.732 112.437 111.174 109.943 108.742 107.57 106.426 105.31 104.219 103.1 102.112 101.094 100.099 99.126 98.173 97.241 96.328 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 95.435 94.56 93.703 92.863 92.04 91.233 90.442 .667 88.906 88.159 87.427 86.708 86.002 85.309 84.628 83.96 83.303 82.658 82.023 81.4 80.788 80.185 79.593 79.01 78.437 77.873 77.318 76.772 76.235 75.706 75.185 74.672 74.167 73.67 73.18 72.698 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 72.222 71.7 71.292 70.837 70.388 69.946 69.51 69.08 68.655 68.237 67.825 67.418 67.016 66.62 66.229 65.843 65.462 65.086 .715 .349 63.987 63.63 63.277 62.929 62.585 62.245 61.91 61.578 61.25 60.927 60.607 60.29 59.978 59.669 59.3 59.062 145 146 147 148 149 150 151 152 153 1 155 156 157 158 159 160 161 162 163 1 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 58.763 58.468 58.177 57.888 57.603 57.321 57.042 56.766 56.493 56.223 55.956 55.692 55.43 55.171 .915 .662 .411 .163 53.917 53.674 53.433 53.195 52.959 52.725 52.494 52.265 52.038 51.814 51.591 51.371 51.153 50.937 50.723 50.511 50.301 50.093 玉溪市中心城区暴雨强度查算表

t 1 2 3 4 5 6 P=5年 t 单位：分钟； q 单位：升/秒/公顷 q t q t q t q t 450.819 37 166.633 73 108.322 109 81.975 145 427.551 38 1.04 74 107.329 110 81.443 146 406.819 39 161.536 75 106.357 111 80.919 147 388.216 40 159.117 76 105.405 112 80.402 148 371.422 41 156.777 77 104.471 113 79.2 149 356.177 42 1.513 78 103.556 114 79.39 150 q 66.686 66.351 66.019 65.692 65.367 65.047

7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 342.27 329.526 317.801 306.973 296.941 287.616 278.925 270.802 263.192 256.047 249.323 242.983 236.994 231.327 225.956 220.857 216.01 211.395 206.996 202.797 198.786 194.948 191.272 187.749 184.369 181.122 178.001 174.998 172.106 169.32 43 44 45 46 47 48 49 50 51 52 53 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 152.321 150.198 148.141 146.145 144.209 142.33 140.505 138.731 137.007 135.331 133.7 132.112 130.566 129.06 127.593 126.163 124.768 123.407 122.079 120.783 119.518 118.282 117.074 115.3 114.739 113.611 112.507 111.427 110.37 109.335 79 80 81 82 83 84 85 86 87 88 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 102.658 101.778 100.915 100.067 99.236 98.42 97.619 96.833 96.06 95.302 94.556 93.824 93.104 92.396 91.701 91.017 90.345 .683 .032 88.392 87.762 87.142 86.532 85.932 85.34 84.758 84.185 83.62 83.063 82.515 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 78.4 78.406 77.924 77.449 76.98 76.518 76.062 75.612 75.168 74.73 74.297 73.87 73.448 73.032 72.621 72.216 71.815 71.419 71.028 70.2 70.261 69.884 69.512 69.144 68.78 68.421 68.066 67.715 67.368 67.025 151 152 153 1 155 156 157 158 159 160 161 162 163 1 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 .73 .416 .106 63.799 63.496 63.195 62.8 62.604 62.313 62.025 61.74 61.458 61.179 60.902 60.629 60.358 60.09 59.824 59.562 59.301 59.044 58.788 58.536 58.285 58.037 57.792 57.9 57.308 57.069 56.832 玉溪市中心城区暴雨强度查算表 P=10年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q 1 4.609 37 185.591 73 120.445 109 90.872 2 465.742 38 182.708 74 119.332 110 90.274 3 444.311 39 179.922 75 118.241 111 .685 4 424.951 40 177.228 76 117.173 112 .105 5 407.368 41 174.623 77 116.125 113 88.533 6 391.321 42 172.101 78 115.098 114 87.969 7 376.612 43 169.658 79 114.091 115 87.412 8 363.076 44 167.291 80 113.104 116 86.8 9 350.574 45 1.996 81 112.135 117 86.323 10 338.988 46 162.769 82 111.184 118 85.7 11 328.218 47 160.608 83 110.251 119 85.263 12 318.18 48 158.51 84 109.335 120 84.744 t q 145 73.706 146 73.33 147 72.958 148 72.59 149 72.226 150 71.867 151 71.511 152 71.159 153 70.811 1 70.466 155 70.126 156 69.7

13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 308.797 300.007 291.7 283.988 276.666 269.75 263.206 257.004 251.117 245.521 240.194 235.118 230.273 225.4 221.217 216.977 212.914 209.016 205.273 201.675 198.214 194.883 191.673 188.577 49 50 51 52 53 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 156.472 1.491 152.5 150.69 148.867 147.091 145.362 143.678 142.036 140.435 138.874 137.35 135.863 134.412 132.994 131.609 130.256 128.933 127. 126.375 125.137 123.927 122.741 121.581 85 86 87 88 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 108.436 107.5 106.687 105.835 104.998 104.176 103.368 102.574 101.793 101.025 100.27 99.527 98.796 98.078 97.37 96.674 95.9 95.315 94.651 93.997 93.353 92.719 92.094 91.478 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 84.232 83.727 83.228 82.736 82.25 81.771 81.297 80.83 80.369 79.913 79.463 79.019 78.58 78.147 77.719 77.296 76.878 76.465 76.057 75.653 75.255 74.861 74.471 74.087 157 158 159 160 161 162 163 1 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 69.455 69.126 68.799 68.476 68.156 67.84 67.527 67.217 66.91 66.606 66.305 66.008 65.713 65.421 65.132 .846 .562 .282 .004 63.728 63.456 63.185 62.918 62.653 玉溪市中心城区暴雨强度查算表 P=20年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q 1 526.878 37 204.517 73 131.922 109 98.858 2 502.814 38 201.319 74 130.677 110 98.19 3 481.012 39 198.228 75 129.458 111 97.532 4 461.161 40 195.237 76 128.263 112 96.884 5 443.005 41 192.343 77 127.092 113 96.245 6 426.33 42 1. 78 125.944 114 95.615 7 410.959 43 186.824 79 124.818 115 94.993 8 396.741 44 184.192 80 123.713 116 94.381 9 383.9 45 181.638 81 122.63 117 93.777 10 371.271 46 179.16 82 121.567 118 93.181 11 359.816 47 176.7 83 120.523 119 92.593 12 349.1 48 174.417 84 119.499 120 92.014 13 339.052 49 172.146 85 118.494 121 91.442 14 329.612 50 169.938 86 117.507 122 90.878 15 320.723 51 167.791 87 116.537 123 90.321 16 312.338 52 165.701 88 115.585 124 .772 17 304.414 53 163.668 114.9 125 .23 18 296.914 161.687 90 113.73 126 88.694 t q 145 79.701 146 79.282 147 78.867 148 78.457 149 78.052 150 77.651 151 77.255 152 76.863 153 76.476 1 76.092 155 75.713 156 75.338 157 74.967 158 74.599 159 74.236 160 73.877 161 73.521 162 73.169

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 2.803 283.052 276.632 270.52 2.693 259.132 253.818 248.735 243.867 239.202 234.726 230.427 226.296 222.321 218.496 214.81 211.256 207.827 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 159.758 157.878 156.045 1.258 152.515 150.814 149.153 147.532 145.948 144.401 142.8 141.41 139.965 138.551 137.168 135.814 134.4 133.192 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 112.826 111.938 111.065 110.206 109.362 108.532 107.715 106.911 106.121 105.343 104.577 103.823 103.081 102.35 101.63 100.922 100.223 99.536 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 88.166 87.5 87.13 86.622 86.12 85.624 85.135 84.651 84.174 83.702 83.236 82.776 82.321 81.871 81.427 80.988 80.5 80.125 163 1 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 72.82 72.475 72.134 71.796 71.462 71.131 70.803 70.478 70.157 69.839 69.524 69.212 68.903 68.597 68.293 67.993 67.696 67.401 玉溪市中心城区暴雨强度查算表 P=30年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q 1 550.638 37 216.379 73 139.362 109 104.198 2 526.226 38 212.995 74 138.039 110 103.487 3 504.028 39 209.723 75 136.743 111 102.788 4 483.75 40 206.557 76 135.473 112 102.098 5 465.148 41 203.492 77 134.227 113 101.418 6 448.018 42 200.523 78 133.006 114 100.748 7 432.19 43 197.6 79 131.809 115 100.087 8 417.517 44 194.856 80 130.634 116 99.435 9 403.874 45 192.15 81 129.482 117 98.793 10 391.155 46 1.522 82 128.352 118 98.159 11 379.267 47 186.971 83 127.242 119 97.534 12 368.13 48 184.493 84 126.153 120 96.918 13 357.672 49 182.084 85 125.084 121 96.31 14 347.833 50 179.742 86 124.034 122 95.71 15 338.558 51 177.4 87 123.002 123 95.118 16 329.799 52 175.246 88 121.9 124 94.533 17 321.513 53 173.088 120.994 125 93.957 18 313.662 170.986 90 120.016 126 93.388 19 306.212 55 168.938 91 119.055 127 92.826 20 299.132 56 166.942 92 118.111 128 92.272 21 292.394 57 1.996 93 117.182 129 91.724 22 285.975 58 163.098 94 116.269 130 91.184 23 279.852 59 161.246 95 115.371 131 90.65 24 274.003 60 159.439 96 114.487 132 90.123 t q 145 83.825 146 83.38 147 82.939 148 82.504 149 82.073 150 81.7 151 81.226 152 80.809 153 80.397 1 79.99 155 79.587 156 79.188 157 78.794 158 78.403 159 78.017 160 77.635 161 77.257 162 76.883 163 76.513 1 76.146 165 75.784 166 75.425 167 75.069 168 74.718

25 26 27 28 29 30 31 32 33 34 35 36 268.411 263.059 257.931 253.013 248.292 243.757 239.396 235.2 231.158 227.263 223.506 219.881 61 62 63 65 66 67 68 69 70 71 72 157.676 155.953 1.27 152.626 151.02 149.449 147.912 146.41 144.94 143.501 142.092 140.713 97 98 99 100 101 102 103 104 105 106 107 108 113.619 112.7 111.923 111.095 110.281 109.479 108.6 107.912 107.146 106.392 105.65 104.918 133 134 135 136 137 138 139 140 141 142 143 144 .603 .0 88.581 88.079 87.584 87.094 86.611 86.133 85.66 85.194 84.732 84.276 169 170 171 172 173 174 175 176 177 178 179 180 74.369 74.025 73.683 73.345 73.01 72.679 72.351 72.026 71.704 71.385 71.069 70.756 玉溪市中心城区暴雨强度查算表 P=50年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q t q 1 578.633 37 230.781 73 148.512 109 110.817 145 88.972 2 553.835 38 227.178 74 147.095 110 110.056 146 88.494 3 531.198 39 223.693 75 145.706 111 109.305 147 88.022 4 510.445 40 220.32 76 144.345 112 108.566 148 87.555 5 491.347 41 217.0 77 143.011 113 107.836 149 87.093 6 473.71 42 213.8 78 141.702 114 107.118 150 86.636 7 457.369 43 210.821 79 140.419 115 106.409 151 86.185 8 442.185 44 207.845 80 139.161 116 105.71 152 85.738 9 428.036 45 204.958 81 137.926 117 105.021 153 85.297 10 414.819 46 202.1 82 136.714 118 104.342 1 84.86 11 402.442 47 199.431 83 135.525 119 103.672 155 84.428 12 390.826 48 196.785 84 134.358 120 103.011 156 84.001 13 379.902 49 194.213 85 133.212 121 102.358 157 83.578 14 369.609 50 191.711 86 132.086 122 101.715 158 83.16 15 359.3 51 1.277 87 130.981 123 101.08 159 82.746 16 350.705 52 186.908 88 129.5 124 100.4 160 82.336 17 342.004 53 184.601 128.828 125 99.835 161 81.931 18 333.749 182.3 90 127.78 126 99.225 162 81.53 19 325.908 55 180.165 91 126.749 127 98.623 163 81.133 20 318.45 56 178.031 92 125.736 128 98.028 1 80.74 21 311.346 57 175.95 93 124.741 129 97.441 165 80.352 22 304.572 58 173.92 94 123.762 130 96.862 166 79.967 23 298.104 59 171.94 95 122.799 131 96.2 167 79.586 24 291.922 60 170.006 96 121.852 132 95.724 168 79.209 25 286.007 61 168.119 97 120.92 133 95.166 169 78.836 26 280.341 62 166.276 98 120.004 134 94.615 170 78.467 27 274.91 63 1.475 99 119.102 135 94.071 171 78.101 28 269.698 162.715 100 118.214 136 93.533 172 77.739 29 2.692 65 160.995 101 117.341 137 93.002 173 77.38 30 259.88 66 159.314 102 116.481 138 92.477 174 77.025

31 32 33 34 35 36 255.251 250.794 246.5 242.36 238.365 234.507 67 68 69 70 71 72 157.669 156.06 1.486 152.945 151.436 149.959 103 104 105 106 107 108 115.634 114.801 113.98 113.171 112.375 111.59 139 140 141 142 143 144 91.958 91.446 90.939 90.439 .944 .455 175 176 177 178 179 180 76.673 76.325 75.98 75.639 75.3 74.965 玉溪市中心城区暴雨强度查算表

P=100年 t 单位：分钟； q 单位：升/秒/公顷 t q t q t q t q 1 607.834 37 246.659 73 158.5 109 118.024 2 582.805 38 242.817 74 157.041 110 117.205 3 559.855 39 239.099 75 155.8 111 116.397 4 538.73 40 235.498 76 1.085 112 115.601 5 519.219 41 232.011 77 152.651 113 114.817 6 501.14 42 228.63 78 151.245 114 114.043 7 484.34 43 225.352 79 149.866 115 113.281 8 468.684 44 222.171 80 148.512 116 112.529 9 4.059 45 219.084 81 147.185 117 111.788 10 440.363 46 216.085 82 145.882 118 111.056 11 427.511 47 213.172 83 144.603 119 110.335 12 415.425 48 210.34 84 143.348 120 109.624 13 404.037 49 207.587 85 142.116 121 108.922 14 393.2 50 204.909 86 140.905 122 108.23 15 383.126 51 202.302 87 139.716 123 107.7 16 373.501 52 199.7 88 138.8 124 106.873 17 3.372 53 197.293 137.401 125 106.207 18 355.702 194.885 90 136.273 126 105.551 19 347.455 55 192.538 91 135.165 127 104.903 20 339.601 56 190.25 92 134.075 128 104.263 21 332.113 57 188.019 93 133.004 129 103.631 22 324.9 58 185.842 94 131.951 130 103.008 23 318.133 59 183.717 95 130.915 131 102.392 24 311.597 60 181.3 96 129.7 132 101.784 25 305.338 61 179.618 97 128.4 133 101.184 26 299.338 62 177. 98 127.908 134 100.591 27 293.582 63 175.708 99 126.938 135 100.005 28 288.0 173.819 100 125.983 136 99.426 29 282.742 65 171.972 101 125.043 137 98.855 30 277.631 66 170.166 102 124.118 138 98.29 31 272.712 67 168.4 103 123.207 139 97.732 32 267.973 68 166.672 104 122.31 140 97.181 33 263.404 69 1.981 105 121.427 141 96.636 34 258.997 70 163.326 106 120.557 142 96.098 35 2.742 71 161.706 107 119.7 143 95.566 36 250.632 72 160.119 108 118.856 144 95.04 t q 145 94.52 146 94.006 147 93.498 148 92.996 149 92.499 150 92.008 151 91.522 152 91.042 153 90.567 1 90.097 155 .633 156 .173 157 88.719 158 88.269 159 87.824 160 87.383 161 86.948 162 86.517 163 86.09 1 85.668 165 85.25 166 84.836 167 84.427 168 84.021 169 83.62 170 83.223 171 82.83 172 82.441 173 82.055 174 81.673 175 81.295 176 80.921 177 80.55 178 80.183 179 79.82 180 79.459

3.5暴雨强度“历时”重现期关系表

玉溪市中心城区暴雨强度“历时”重现期关系表

暴雨强度i-P-t表 重现期 1 2 3 5 10 20 50 100

降雨历时 5 6.43 9.004 9.939 11.193 12.423 13.48 14.734 15.62 10 11.026 14.468 15.9 17.988 20.076 21.971 24.214 25.839 15 14.33 18.848 20.718 23.574 26.482 29.079 32.247 34.532 20 16.744 22.353 24.674 28.22 31.83 35.0 38.987 41.823 30 20.201 27.325 30.286 24.609 38.932 42.8 47.497 50.859 45 22.747 31.578 35.13 40.217 45.305 49.816 55.095 58.935 60 24.817 34.424 38.307 43.519 48.731 53.33 58.849 62.631 90 26.845 37.116 41.247 47.163 53.08 58.327 .467 68.933 120 30.212 41.4 45.904 51.876 57.73 62.766 68.738 72.953 150 35.526 48.745 53.977 61.000 67.884 73.805 80.828 85.785 180 37.655 51.524 57.014 .382 71.606 77.818 85.186 90.387