[1]戴有学,王振华,戴临栋,等.山西临汾市城区暴雨强度公式修订分析研究[J].自然灾害学报,2017,(06):197-206.[doi:10.13577/j.jnd.2017.0622]
 DAI Youxue,WANG Zhenhua,DAI Lindong,et al.Study on the revision of rainstorm intensity formula in urban area in Linfen of Shanxi Province[J].,2017,(06):197-206.[doi:10.13577/j.jnd.2017.0622]
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山西临汾市城区暴雨强度公式修订分析研究
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2017年06期
页码:
197-206
栏目:
出版日期:
2017-12-08

文章信息/Info

Title:
Study on the revision of rainstorm intensity formula in urban area in Linfen of Shanxi Province
作者:
戴有学1 王振华2 戴临栋3 曹巧莲1
1. 山西省临汾市气象局, 山西 临汾 041000;
2. 山西省气象科学研究所, 山西 太原 030002;
3. 兰州大学 大气科学学院, 甘肃 兰州 730000
Author(s):
DAI Youxue1 WANG Zhenhua2 DAI Lindong3 CAO Qiaolian1
1. Linfen Meteorological Bureau of Shanxi Province, Linfen 041000, China;
2. Institute of Meteorological Science of Shanxi Province, Taiyuan 030002, China;
3. College of Atmospheric Science of Lanzhou University, Lanzhou 730000, China
关键词:
年最大值法皮尔逊Ⅲ型曲线最小平方法暴雨强度公式拟合精度检验
Keywords:
maximum sampling methodPearson Ⅲ type curveleast square methodstorm intensity formulatest of goodness of fit
分类号:
P467;X43
DOI:
10.13577/j.jnd.2017.0622
摘要:
本文利用临汾国家基本气象站1981-2013年的雨量资料,采用年最大值法进行雨样取样选取处理,通过对皮尔逊Ⅲ型和耿贝尔型分布函数曲线进行拟合试验,根据绝对误差和适线图结果,优选出误差最小的皮尔逊-Ⅲ型理论分布并推求出其雨强-历时-重现期(i~t~P)关系表。根据i~t~P表,由最小平方法得到暴雨强度公式中参数值,从而得到暴雨强度公式。暴雨强度公式拟合精度检验表明,重现期在2~100年间,绝对误差为0.026 mm/min,重现期在2~20年间绝对误差为0.024 mm/min,其结果小于现行规范所规定的0.05 mm/min的绝对误差要求。新旧暴雨强度公式对比表明,除了低重现期短历时外,新暴雨强度公式雨强值比旧暴雨强度公式得到的雨强值大,且随着重现期增大,雨强值增加的幅度也增大。新暴雨强度公式可作为临汾市城区计算雨水排水设计流量、城市排水管网设计和城市规划设计重要依据。
Abstract:
Based on the rainfall data of the National Basic Weather Station of Linfen from 1981 to 2013, the annual maximum sampling method was used to select the rain samples, By fitting the Pearson type Ⅲ and Gumbel type distribution function curves according to the absolute error and the results of the fitness curve, and the minimum error of the theoretical distribution was selected and derived i~t~P table. According to the i~t~P table, the parameter values of the storm intensity formula were obtained by Least square method, and the rainstorm intensity formula was obtained. The results of test goodness of fit of storm intensity formula showed that the absolute error was 0.026 mm/min between 2 and 100 years, and the absolute error was 0.024 mm/min between 2 and 20 years, besides the result was far less than the absolute error requirement of 0.05 mm/min as stipulated in the current specification. Compared to the old and new rainstorm intensity formula, except low return period, the new rainfall intensity value was larger than the old. With the increase of the return period, the value was also increased. The formula can be used as an important basis for calculation of urban drainage design flow, urban drainage pipe network design and urban planning and design in Linfen.

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备注/Memo

备注/Memo:
收稿日期:2017-02-28;改回日期:2017-04-18。
基金项目:山西省重点研发计划项目(201603D221038)
作者简介:戴有学(1964-),男,高级工程师,主要从事气象预报业务及研究.E-mail:daiyouxue@126.com
更新日期/Last Update: 1900-01-01