±800kV特高压直流输电线路跨越桑干河洪水计算

摘要

根据防洪影响评价要求对山西－江苏±800kV高压直流输电线路，跨越桑干河处的洪水进行分析计算。采用P-Ⅲ型频率曲线，对设计洪峰、洪量进行频率分析，适线时以实测点据为主，适当参照历史洪水；然后通过对不同编制单位设计洪水计算结果进行比较分析后，认为本次计算结果合理。%Based on the survey introduction about ±800kV UHC DC transmission line engineering from Shanxi to Jiangsu, flood analysis and calculation are done at the section of the engineering crossing Sanggan River according to the requirement of flood impact assessment. P-Ⅲfrequency curve, which is determined by observed data mainly and historical flood data properly, is used to analyze design flood peak and volume. Comparing different flood results written by different units, the result in this paper is considered reasonable.