摘要
Abstract
Based on the coordination between different standard provisions, engineering design return period of meteorology and the useful life of the structure, the standard for flood control of HV (High Voltage), EHV (Extra-High Voltage) and UHV (Ultra-High Voltage) power transmission and transformation project were classiifed and examined. It is recommended that the control flood return period of HV and EHV power transformation project should be taken as 50 years and 100 years respectively, and the UHV transformation project be taken not less than 100 years;the standard for flood control of large crossing overhead transmission project should be the same as the transformation project with the same voltage grade. The standard for flood control of the non-large crossing overhead transmission project could be reduced properly, which is recommended to be taken as 30 years, 50 years and 100 years for HV, EHV and UHV power transmission project respectively.关键词
高压/超高压/特高压/防护等级/设计气象重现期/冲刷预测年限Key words
high voltage/extra-high voltage/ultra-high voltage/protection grade/design return period of meteorology/years of erosion prediction分类
建筑与水利
