CAJ | 학술논문

基于西安市1961～2011年共51年分钟自记雨量资料，以5 a为间隔分段统计了各段年均降雨量及降雨日数、大雨量及大雨日数、暴雨量及暴雨日数和设计降雨强度，运用M ann‐Kendall突变分析法和线性趋势法分析了西安市降雨模式变化。结果表明自2005年后年均降雨量和降雨日数均减少，降雨日数减少幅度更大，而大雨和暴雨日数及其雨量均增加，雨量增加幅度更大，表明降雨、大到暴雨集中度增加，2005年以后大雨和暴雨发生频次更高；同一强度降雨的重现期在2005年后较小，同一重现期的降雨在2005年后雨强更大，在2005～2009年段在重现期为1～5 a的降雨中各历时强度均达到最大，结合气候变化及城市化分析了西安市降雨模式变化的原因；讨论了在气候变化和降雨模式变化条件下，以降雨历史资料为基础推求降雨强度公式，设计雨水排水系统存在的问题及与城市内涝之间的关系。
기우서안시1961～2011년공51년분종자기우량자료，이5 a위간격분단통계료각단년균강우량급강우일수、대우량급대우일수、폭우량급폭우일수화설계강우강도，운용M ann‐Kendall돌변분석법화선성추세법분석료서안시강우모식변화。결과표명자2005년후년균강우량화강우일수균감소，강우일수감소폭도경대，이대우화폭우일수급기우량균증가，우량증가폭도경대，표명강우、대도폭우집중도증가，2005년이후대우화폭우발생빈차경고；동일강도강우적중현기재2005년후교소，동일중현기적강우재2005년후우강경대，재2005～2009년단재중현기위1～5 a적강우중각력시강도균체도최대，결합기후변화급성시화분석료서안시강우모식변화적원인；토론료재기후변화화강우모식변화조건하，이강우역사자료위기출추구강우강도공식，설계우수배수계통존재적문제급여성시내로지간적관계。
Based on the self‐recorded rainfall data by minute in Xi'an from 1961 to 2011 ,a total of 51 years ,a statistics was conducted by segment on the annual rainfall and the number of rainy days ,the an‐nual heavy rainfall and the number of rain days ,the annual storm rainfall and the number of storm days and the designed rainfall intensity with 5 a as the interval ,and an analysis was conducted on the rainfall patterns in Xi'an with Mann‐Kendall mutation analysis and linear trend methods .The results showed that the annual rainfall and the number of rainy days were both reduced ,and a greater magnitude of decrease was showed in the number of days of rainfall since 2005 ,while the number of heavy rain and storms days and the rainfall increased ,the rainfall increased much greater ,indicating that the concentration of rainfall and heavy rain and storms increased ,and the heavy rain and storms occurred in higher frequency after 2005 .The return period of the same intensity of rainfall was smaller after 2005 ,the rain intensity in the same return period was greater after 2005 ,each period intensity of rainfall in the segment from 2005 to 2009 in the return period of 1 ~ 5 a reached the maximum ,and the reasons for the change of rainfall pat‐terns in Xi'an City was analyzed in combination with climate change and urbanization .The calculation of rainfall intensity formula based on historical data of rainfall under the conditions of climate change and rain‐fall patterns changing ,the problems existed in the designing of rainwater drainage network ,and the rela‐tionship between the system and urban waterlogging were also discussed .