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第一、复堤工程1.黄河复堤:甲、堤线设计(1)标准:设计堤顶中心高,以高出一九四九年自然洪水位一·五公尺为标准,卡水地区高出一·八公尺。因河道卡水影响,水面坡降不一致,设计堤顶纵坡一般为万分之一,个别堤段为便利修工有万分之二至万分之三者,卡水地区为万分之○·二——○·六。堤顶宽度为七公尺至九公尺,张秋金堤因需修石护坡,堤顶放宽为
First, the dike restoration project 1. The Yellow River dike: a, embankment design (1) standard: design dike center height, higher than the natural flood 1.5 meters in 1949 as the standard card water area One and eight meters higher. Due to the influence of river water and card water, the gradient of water surface is inconsistent, the longitudinal slope of the dike is designed to be one ten thousandth, and the individual dike sections are between two ten thousandths to three ten thousandths for convenience repair workers. Two - ○ · six. The embankment width of seven meters to nine meters, Zhang golden embankment due to the need to repair stone slope, embankment to relax