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在用瞬时单位线方法推求洪水时段流量时,为了避免从S曲线内插,全国雨洪办委托水利水电科学研究院水资源所编制了可以直接查读数值的《时段单位线用表》,现该表已交厂付印,计划于今年12月上旬出版,年底将由本所直接寄送订购单位。本表可供各省、市、自治区编制的瞬时单位线法《暴雨径流查算图表》配套,并可供采用瞬时单位线进行洪水计算和预报使用。《时段单位线用表》包括以下三部分内容:1.各种时段单位线,计有10分钟、15分钟、30分钟、1小时、3小时等五种计算时段用表。
In order to avoid the interpolation from the S curve when using the instantaneous unit line method to calculate the flood period flow, the National Rainwater Conservation Office commissioned the Institute of Water Resources and Hydropower Research to compile a “time unit line table” The table has been submitted to the factory to print, is scheduled to be published in early December this year, by the end of this book will be sent directly to the ordering unit. This table is available for compilation of instantaneous unit-line method “Stormwater Runoff Computation Chart” compiled by provinces, municipalities and autonomous regions and can be used for flood calculation and forecasting using instantaneous unit hydrographs. “Period unit line table” includes the following three parts: 1. Various time unit line, there are 10 minutes, 15 minutes, 30 minutes, 1 hour, 3 hours and other five kinds of calculation period table.