摘要
暴雨选样方法按机率概念分可分为年最大值法与非年最大值法(年超大值法、超定量法与年多个样法)两类.本文论证不同选样方法的关系及其相应频率分布计算,指出改用年最大使法后频率分布计算要改用相应的模型,并对雨水道设计重现期也要做一些修正,这样才能获得相当于现行的计算强度,否则会产生频率模型与选样方法不协调、计算暴雨强度偏低等不合理现象.本文提出的论证与计算方法为改用年最大值法选样提供了实用条件.
There are two categories of storm sampling methods: annual maximum method (AM) and ex-annual maximum methods (annual excess method, super-quantitative method and annual multisampling method), The relationships between different sampling methods and their distinctive frequency distribution calculations are disscused and the author indicated that when AM was employed to replace others the frequency distribution calculation models must be changed correspondingly too and the designed recurrence interval of rainwater drams must be revised to guarantee the calculated result of storm intensity in a rational level as currently valided. otherwise the calculated storm intensity will decline too low due to the uncompatibility of frequency calculation model and sampling method. The arguments and calculation methods proposed in this paper provid the practical criteria to employ the AM.
出处
《给水排水》
CSCD
1996年第2期5-9,共5页
Water & Wastewater Engineering
