关于发布六安市暴雨强度公式和设计降雨雨型的通知
各有关单位:
为进一步优化城市雨水系统规划设计,提高六安市防灾减灾和防洪排涝能力,根据《室外排水设计标准》(GB50014-2021)《城市暴雨强度公式编制和设计暴雨雨型确定技术导则》《住房和城乡建设部办公厅 国家发展改革委办公厅 中国气象局办公室关于进一步规范城市内涝防治有关信息发布的通知》(建办城〔2022〕30号)等要求,结合我市海绵城市建设示范城市实际需要,市住建局会同市气象局组织对六安市暴雨强度公式和设计降雨雨型进行了修订,并已通过专家评审。经市政府同意,现将修订后的暴雨强度公式和设计降雨雨型公布如下:
1.暴雨强度总公式
式中:i为暴雨强度计算值(毫米/分钟);q为暴雨强度计算值(升/秒/公顷);t为降雨历时(分钟);P为重现期(年)。
2.设计降雨雨型
六安市长历时设计降雨雨型经同频率分析后,形态以单峰型为主,经过“众值定位”后,其雨峰位置靠近中偏前段。推求得到的不同重现期下的六安市1440min历时的同频率雨型,具有在峰前缓慢累积后较快的上升到峰值,在峰后急速下降的特征。由本次长历时暴雨强度公式计算30年一遇24小时对应设计降雨量为206.2mm,可用于确定六安市内涝防治设施的设计标准。
推求得到的六安市短历时的芝加哥雨型,呈单峰型,雨峰位于整场降水过程的前中部,雨峰系数为0.414,各历时的降水强度随着重现期的延长而增大。
以上暴雨强度公式自公布之日起施行,市区范围内所有新、改、扩建项目涉及排水工程的设计须执行新修订的暴雨强度公式和设计降雨雨型。
附件:1.六安市长历时暴雨强度公式及计算图表
2.六安市短历时暴雨强度公式及计算图表
六安市住房和城乡建设局 六安市气象局
2025年1月10日
附件1:
六安市长历时暴雨强度公式查算表及计算图表
表1-1 单一重现期长历时暴雨强度计算公式表 (单位:mm/min)
图1-1 六安市长历时暴雨强度曲线
表1-2 六安市同频率雨型各段(逐5分钟)百分率分配
序号 |
H1440-H720 |
H720-H360 |
H360-H240 |
H240-H180 |
H180-H150 |
H150-H120 |
H120-H90 |
H90-H60 |
H60-H45 |
H45-H30 |
H30-H15 |
H15-H5 |
H5 |
1 |
0.55% |
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2 |
0.94% |
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3 |
2.10% |
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4 |
2.44% |
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5 |
3.39% |
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6 |
3.03% |
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7 |
0.77% |
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8 |
1.63% |
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9 |
0.83% |
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10 |
1.16% |
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11 |
0.99% |
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12 |
0.86% |
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13 |
1.25% |
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14 |
1.23% |
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15 |
1.02% |
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16 |
1.50% |
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17 |
1.93% |
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18 |
1.66% |
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19 |
2.12% |
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20 |
2.78% |
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21 |
2.34% |
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22 |
1.60% |
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23 |
1.86% |
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24 |
1.53% |
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25 |
1.22% |
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26 |
0.58% |
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27 |
0.52% |
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28 |
0.36% |
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29 |
0.59% |
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30 |
1.09% |
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31 |
0.67% |
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32 |
0.59% |
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33 |
0.45% |
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34 |
0.32% |
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35 |
0.20% |
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36 |
0.36% |
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37 |
0.64% |
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38 |
0.71% |
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39 |
0.50% |
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40 |
0.39% |
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41 |
0.59% |
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42 |
0.65% |
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43 |
0.69% |
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44 |
0.46% |
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45 |
0.60% |
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46 |
0.34% |
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47 |
0.30% |
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48 |
0.23% |
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49 |
0.20% |
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50 |
0.24% |
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51 |
0.30% |
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52 |
0.30% |
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53 |
0.32% |
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54 |
0.40% |
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55 |
0.51% |
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56 |
0.77% |
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57 |
0.94% |
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58 |
0.78% |
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59 |
0.58% |
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60 |
0.77% |
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|
61 |
0.72% |
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62 |
0.62% |
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63 |
0.75% |
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64 |
0.72% |
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65 |
0.42% |
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|
66 |
|
1.67% |
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|
67 |
|
2.24% |
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|
68 |
|
3.23% |
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|
69 |
|
2.82% |
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|
70 |
|
1.54% |
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|
71 |
|
1.07% |
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|
72 |
|
1.92% |
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|
73 |
|
1.92% |
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|
|
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|
74 |
|
1.83% |
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|
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|
75 |
|
1.54% |
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|
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|
76 |
|
1.95% |
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|
77 |
|
1.80% |
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|
|
|
|
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|
78 |
|
1.40% |
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|
79 |
|
0.87% |
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|
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|
|
|
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|
80 |
|
1.28% |
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|
|
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|
81 |
|
1.42% |
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|
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|
82 |
|
1.45% |
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|
83 |
|
1.63% |
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|
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|
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|
84 |
|
0.96% |
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|
|
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|
85 |
|
1.54% |
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|
86 |
|
2.04% |
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|
87 |
|
1.10% |
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|
88 |
|
0.70% |
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|
89 |
|
0.72% |
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|
90 |
|
0.67% |
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|
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|
91 |
|
0.55% |
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|
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|
92 |
|
0.52% |
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|
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|
93 |
|
0.40% |
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|
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|
94 |
|
0.35% |
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|
|
|
|
|
|
|
|
|
95 |
|
0.70% |
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|
|
|
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|
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|
96 |
|
0.58% |
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|
|
|
|
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|
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|
97 |
|
0.58% |
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|
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|
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|
|
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|
98 |
|
0.37% |
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|
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|
|
|
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|
99 |
|
0.61% |
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|
|
|
|
|
100 |
|
0.35% |
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|
|
|
|
101 |
|
0.49% |
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|
|
|
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|
|
|
|
102 |
|
0.43% |
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|
|
|
|
|
|
103 |
|
0.52% |
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|
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|
|
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|
|
|
|
104 |
|
0.87% |
|
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|
|
|
|
|
|
|
|
|
105 |
|
1.25% |
|
|
|
|
|
|
|
|
|
|
|
106 |
|
1.02% |
|
|
|
|
|
|
|
|
|
|
|
107 |
|
0.70% |
|
|
|
|
|
|
|
|
|
|
|
108 |
|
1.54% |
|
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|
|
|
|
|
|
|
|
|
109 |
|
1.22% |
|
|
|
|
|
|
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|
|
|
110 |
|
3.44% |
|
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|
|
|
|
|
|
|
|
|
111 |
|
3.06% |
|
|
|
|
|
|
|
|
|
|
|
112 |
|
1.63% |
|
|
|
|
|
|
|
|
|
|
|
113 |
|
2.01% |
|
|
|
|
|
|
|
|
|
|
|
114 |
|
2.68% |
|
|
|
|
|
|
|
|
|
|
|
115 |
|
1.28% |
|
|
|
|
|
|
|
|
|
|
|
116 |
|
0.84% |
|
|
|
|
|
|
|
|
|
|
|
117 |
|
|
2.32% |
|
|
|
|
|
|
|
|
|
|
118 |
|
|
3.17% |
|
|
|
|
|
|
|
|
|
|
119 |
|
|
2.58% |
|
|
|
|
|
|
|
|
|
|
120 |
|
|
3.55% |
|
|
|
|
|
|
|
|
|
|
121 |
|
|
4.70% |
|
|
|
|
|
|
|
|
|
|
122 |
|
|
|
10.75% |
|
|
|
|
|
|
|
|
|
123 |
|
|
|
8.45% |
|
|
|
|
|
|
|
|
|
124 |
|
|
|
|
20.44% |
|
|
|
|
|
|
|
|
125 |
|
|
|
|
24.02% |
|
|
|
|
|
|
|
|
126 |
|
|
|
|
16.81% |
|
|
|
|
|
|
|
|
127 |
|
|
|
|
|
21.06% |
|
|
|
|
|
|
|
128 |
|
|
|
|
|
24.03% |
|
|
|
|
|
|
|
129 |
|
|
|
|
|
|
|
|
55.00% |
|
|
|
|
130 |
|
|
|
|
|
|
|
|
|
45.72% |
|
|
|
131 |
|
|
|
|
|
|
|
|
|
|
|
47.95% |
|
132 |
|
|
|
|
|
|
|
|
|
|
|
52.05% |
|
133 |
|
|
|
|
|
|
|
|
|
|
|
|
100% |
134 |
|
|
|
|
|
|
|
|
|
|
32.29% |
|
|
135 |
|
|
|
|
|
|
|
|
|
|
33.63% |
|
|
136 |
|
|
|
|
|
|
|
|
|
|
34.08% |
|
|
137 |
|
|
|
|
|
|
|
|
|
32.57% |
|
|
|
138 |
|
|
|
|
|
|
|
|
|
21.71% |
|
|
|
139 |
|
|
|
|
|
|
|
|
27.15% |
|
|
|
|
140 |
|
|
|
|
|
|
|
|
17.85% |
|
|
|
|
141 |
|
|
|
|
|
|
|
17.75% |
|
|
|
|
|
142 |
|
|
|
|
|
|
|
14.85% |
|
|
|
|
|
143 |
|
|
|
|
|
|
|
13.71% |
|
|
|
|
|
144 |
|
|
|
|
|
|
|
18.85% |
|
|
|
|
|
145 |
|
|
|
|
|
|
|
15.42% |
|
|
|
|
|
146 |
|
|
|
|
|
|
|
19.42% |
|
|
|
|
|
147 |
|
|
|
|
|
|
13.91% |
|
|
|
|
|
|
148 |
|
|
|
|
|
|
24.89% |
|
|
|
|
|
|
149 |
|
|
|
|
|
|
20.40% |
|
|
|
|
|
|
150 |
|
|
|
|
|
|
15.51% |
|
|
|
|
|
|
151 |
|
|
|
|
|
|
11.42% |
|
|
|
|
|
|
152 |
|
|
|
|
|
|
13.87% |
|
|
|
|
|
|
153 |
|
|
|
|
|
13.30% |
|
|
|
|
|
|
|
154 |
|
|
|
|
|
10.72% |
|
|
|
|
|
|
|
155 |
|
|
|
|
|
15.87% |
|
|
|
|
|
|
|
156 |
|
|
|
|
|
15.02% |
|
|
|
|
|
|
|
157 |
|
|
|
|
14.41% |
|
|
|
|
|
|
|
|
158 |
|
|
|
|
13.21% |
|
|
|
|
|
|
|
|
159 |
|
|
|
|
11.11% |
|
|
|
|
|
|
|
|
160 |
|
|
|
3.04% |
|
|
|
|
|
|
|
|
|
161 |
|
|
|
4.28% |
|
|
|
|
|
|
|
|
|
162 |
|
|
|
4.62% |
|
|
|
|
|
|
|
|
|
163 |
|
|
|
9.47% |
|
|
|
|
|
|
|
|
|
164 |
|
|
|
11.95% |
|
|
|
|
|
|
|
|
|
165 |
|
|
|
9.69% |
|
|
|
|
|
|
|
|
|
166 |
|
|
|
8.45% |
|
|
|
|
|
|
|
|
|
167 |
|
|
|
12.62% |
|
|
|
|
|
|
|
|
|
168 |
|
|
|
6.65% |
|
|
|
|
|
|
|
|
|
169 |
|
|
|
10.03% |
|
|
|
|
|
|
|
|
|
170 |
|
|
2.88% |
|
|
|
|
|
|
|
|
|
|
171 |
|
|
2.75% |
|
|
|
|
|
|
|
|
|
|
172 |
|
|
3.98% |
|
|
|
|
|
|
|
|
|
|
173 |
|
|
4.32% |
|
|
|
|
|
|
|
|
|
|
174 |
|
|
5.08% |
|
|
|
|
|
|
|
|
|
|
175 |
|
|
5.80% |
|
|
|
|
|
|
|
|
|
|
176 |
|
|
4.78% |
|
|
|
|
|
|
|
|
|
|
177 |
|
|
3.94% |
|
|
|
|
|
|
|
|
|
|
178 |
|
|
3.81% |
|
|
|
|
|
|
|
|
|
|
179 |
|
|
3.43% |
|
|
|
|
|
|
|
|
|
|
180 |
|
|
3.94% |
|
|
|
|
|
|
|
|
|
|
181 |
|
|
5.16% |
|
|
|
|
|
|
|
|
|
|
182 |
|
|
2.79% |
|
|
|
|
|
|
|
|
|
|
183 |
|
|
3.81% |
|
|
|
|
|
|
|
|
|
|
184 |
|
|
5.50% |
|
|
|
|
|
|
|
|
|
|
185 |
|
|
6.01% |
|
|
|
|
|
|
|
|
|
|
186 |
|
|
5.12% |
|
|
|
|
|
|
|
|
|
|
187 |
|
|
4.95% |
|
|
|
|
|
|
|
|
|
|
188 |
|
|
5.63% |
|
|
|
|
|
|
|
|
|
|
189 |
|
2.48% |
|
|
|
|
|
|
|
|
|
|
|
190 |
|
1.92% |
|
|
|
|
|
|
|
|
|
|
|
191 |
|
3.03% |
|
|
|
|
|
|
|
|
|
|
|
192 |
|
2.33% |
|
|
|
|
|
|
|
|
|
|
|
193 |
|
1.63% |
|
|
|
|
|
|
|
|
|
|
|
194 |
|
2.27% |
|
|
|
|
|
|
|
|
|
|
|
195 |
|
1.69% |
|
|
|
|
|
|
|
|
|
|
|
196 |
|
2.21% |
|
|
|
|
|
|
|
|
|
|
|
197 |
|
2.45% |
|
|
|
|
|
|
|
|
|
|
|
198 |
|
1.57% |
|
|
|
|
|
|
|
|
|
|
|
199 |
|
1.80% |
|
|
|
|
|
|
|
|
|
|
|
200 |
|
1.31% |
|
|
|
|
|
|
|
|
|
|
|
201 |
|
0.58% |
|
|
|
|
|
|
|
|
|
|
|
202 |
|
0.87% |
|
|
|
|
|
|
|
|
|
|
|
203 |
|
0.87% |
|
|
|
|
|
|
|
|
|
|
|
204 |
|
1.05% |
|
|
|
|
|
|
|
|
|
|
|
205 |
|
1.10% |
|
|
|
|
|
|
|
|
|
|
|
206 |
|
1.19% |
|
|
|
|
|
|
|
|
|
|
|
207 |
|
0.72% |
|
|
|
|
|
|
|
|
|
|
|
208 |
|
0.67% |
|
|
|
|
|
|
|
|
|
|
|
209 |
|
0.96% |
|
|
|
|
|
|
|
|
|
|
|
210 |
0.43% |
|
|
|
|
|
|
|
|
|
|
|
|
211 |
0.58% |
|
|
|
|
|
|
|
|
|
|
|
|
212 |
0.48% |
|
|
|
|
|
|
|
|
|
|
|
|
213 |
0.43% |
|
|
|
|
|
|
|
|
|
|
|
|
214 |
0.27% |
|
|
|
|
|
|
|
|
|
|
|
|
215 |
0.29% |
|
|
|
|
|
|
|
|
|
|
|
|
216 |
0.33% |
|
|
|
|
|
|
|
|
|
|
|
|
217 |
0.20% |
|
|
|
|
|
|
|
|
|
|
|
|
218 |
0.20% |
|
|
|
|
|
|
|
|
|
|
|
|
219 |
0.29% |
|
|
|
|
|
|
|
|
|
|
|
|
220 |
0.26% |
|
|
|
|
|
|
|
|
|
|
|
|
221 |
0.55% |
|
|
|
|
|
|
|
|
|
|
|
|
222 |
0.94% |
|
|
|
|
|
|
|
|
|
|
|
|
223 |
0.88% |
|
|
|
|
|
|
|
|
|
|
|
|
224 |
0.80% |
|
|
|
|
|
|
|
|
|
|
|
|
225 |
0.49% |
|
|
|
|
|
|
|
|
|
|
|
|
226 |
0.40% |
|
|
|
|
|
|
|
|
|
|
|
|
227 |
0.52% |
|
|
|
|
|
|
|
|
|
|
|
|
228 |
0.69% |
|
|
|
|
|
|
|
|
|
|
|
|
229 |
0.30% |
|
|
|
|
|
|
|
|
|
|
|
|
230 |
0.29% |
|
|
|
|
|
|
|
|
|
|
|
|
231 |
0.29% |
|
|
|
|
|
|
|
|
|
|
|
|
232 |
0.61% |
|
|
|
|
|
|
|
|
|
|
|
|
233 |
0.67% |
|
|
|
|
|
|
|
|
|
|
|
|
234 |
0.58% |
|
|
|
|
|
|
|
|
|
|
|
|
235 |
0.49% |
|
|
|
|
|
|
|
|
|
|
|
|
236 |
0.59% |
|
|
|
|
|
|
|
|
|
|
|
|
237 |
0.43% |
|
|
|
|
|
|
|
|
|
|
|
|
238 |
0.43% |
|
|
|
|
|
|
|
|
|
|
|
|
239 |
0.29% |
|
|
|
|
|
|
|
|
|
|
|
|
240 |
0.23% |
|
|
|
|
|
|
|
|
|
|
|
|
241 |
0.27% |
|
|
|
|
|
|
|
|
|
|
|
|
242 |
0.30% |
|
|
|
|
|
|
|
|
|
|
|
|
243 |
0.33% |
|
|
|
|
|
|
|
|
|
|
|
|
244 |
0.20% |
|
|
|
|
|
|
|
|
|
|
|
|
245 |
0.20% |
|
|
|
|
|
|
|
|
|
|
|
|
246 |
0.24% |
|
|
|
|
|
|
|
|
|
|
|
|
247 |
0.26% |
|
|
|
|
|
|
|
|
|
|
|
|
248 |
0.23% |
|
|
|
|
|
|
|
|
|
|
|
|
249 |
0.40% |
|
|
|
|
|
|
|
|
|
|
|
|
250 |
0.39% |
|
|
|
|
|
|
|
|
|
|
|
|
251 |
0.39% |
|
|
|
|
|
|
|
|
|
|
|
|
252 |
0.46% |
|
|
|
|
|
|
|
|
|
|
|
|
253 |
0.68% |
|
|
|
|
|
|
|
|
|
|
|
|
254 |
0.71% |
|
|
|
|
|
|
|
|
|
|
|
|
255 |
0.65% |
|
|
|
|
|
|
|
|
|
|
|
|
256 |
0.67% |
|
|
|
|
|
|
|
|
|
|
|
|
257 |
0.59% |
|
|
|
|
|
|
|
|
|
|
|
|
258 |
0.51% |
|
|
|
|
|
|
|
|
|
|
|
|
259 |
0.45% |
|
|
|
|
|
|
|
|
|
|
|
|
260 |
0.37% |
|
|
|
|
|
|
|
|
|
|
|
|
261 |
0.42% |
|
|
|
|
|
|
|
|
|
|
|
|
262 |
0.42% |
|
|
|
|
|
|
|
|
|
|
|
|
263 |
0.36% |
|
|
|
|
|
|
|
|
|
|
|
|
264 |
0.43% |
|
|
|
|
|
|
|
|
|
|
|
|
265 |
0.45% |
|
|
|
|
|
|
|
|
|
|
|
|
266 |
0.42% |
|
|
|
|
|
|
|
|
|
|
|
|
267 |
0.46% |
|
|
|
|
|
|
|
|
|
|
|
|
268 |
0.72% |
|
|
|
|
|
|
|
|
|
|
|
|
269 |
0.51% |
|
|
|
|
|
|
|
|
|
|
|
|
270 |
0.36% |
|
|
|
|
|
|
|
|
|
|
|
|
271 |
0.26% |
|
|
|
|
|
|
|
|
|
|
|
|
272 |
0.30% |
|
|
|
|
|
|
|
|
|
|
|
|
273 |
0.30% |
|
|
|
|
|
|
|
|
|
|
|
|
274 |
0.39% |
|
|
|
|
|
|
|
|
|
|
|
|
275 |
0.46% |
|
|
|
|
|
|
|
|
|
|
|
|
276 |
0.53% |
|
|
|
|
|
|
|
|
|
|
|
|
277 |
0.59% |
|
|
|
|
|
|
|
|
|
|
|
|
278 |
0.51% |
|
|
|
|
|
|
|
|
|
|
|
|
279 |
0.67% |
|
|
|
|
|
|
|
|
|
|
|
|
280 |
1.15% |
|
|
|
|
|
|
|
|
|
|
|
|
281 |
0.97% |
|
|
|
|
|
|
|
|
|
|
|
|
282 |
0.97% |
|
|
|
|
|
|
|
|
|
|
|
|
283 |
0.86% |
|
|
|
|
|
|
|
|
|
|
|
|
284 |
0.80% |
|
|
|
|
|
|
|
|
|
|
|
|
285 |
0.49% |
|
|
|
|
|
|
|
|
|
|
|
|
286 |
0.68% |
|
|
|
|
|
|
|
|
|
|
|
|
287 |
0.75% |
|
|
|
|
|
|
|
|
|
|
|
|
288 |
0.34% |
|
|
|
|
|
|
|
|
|
|
|
|
附件2:
六安市短历时暴雨强度公式查算表及计算图表
表2-1 单一重现期短历时暴雨强度计算公式表(单位:mm/min)
图2-1 六安市短历时暴雨强度曲线
图2-2 六安市短历时降水强度曲线图