灾害学2017，Vol.32Issue(4)：214-218,5.DOI:10.3969/j.issn.1000-811X.2017.04.036
基于不同频率分布的乐山市暴雨参数分析
Analysis of Rainstorm Parameters in Leshan City Based on Different Frequency Distribution
摘要
Abstract
Based on the data of short rainstorm rainfall from 1981 to 2015 in Leshan City,Sichuan Province,the annual maximum value method was used to calculate the rainstorm formula,and analyzed the three frequency distribution curves of Pearson-Ⅲ distribution curve,Gumbel distribution curve and exponential distribution curve to research on the adaptability of the three kinds of frequency distribution curve model and the original rainstorm data.The rainstorm parameters of different frequency distributions are also analyzed.The results show that the average absolute variance of the Gumbel distribution curve is less than 0.05mm/min and the average relative variance is less than 5％ when the calculated recurrence period is 2-20a,which accords with the accuracy requirement.The new rainstorm formula and the current rainstorm formula,the surrounding city rainstorm formula and the "Chinese rainstorm statistics parameter Arias" were compared,and the rationality of the new generation of Leshan city rainstorm formula parameters is validated.It provides a new theoretical reference for the optimal design of drainage system in Leshan City and the construction and reconstruction of drainage pipe network.关键词
暴雨强度公式/皮尔逊-Ⅲ型分布曲线/耿贝尔分布曲线/指数分布曲线/暴雨参数/四川乐山市Key words
Leshan City/Rainstorm Intensity Formula/pearson-Ⅲ type distribution curve/gumbel distribution curve/exponential distribution curve/rainstorm parameters分类
天文与地球科学引用本文复制引用
杨译舒,叶兴成,王飞,朱程亮,游志康,欧淑芳,刘俊..基于不同频率分布的乐山市暴雨参数分析[J].灾害学,2017,32(4):214-218,5.基金项目
国家自然科学基金资助项目(41471015) （41471015）
