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水来土掩,筑堤挡水,挡疏结合,是广大劳动人民长期与水作斗争的经验总结。据考证,我国西周已出现堤防。堤防作为保护河道两岸人民生命财产安全和工农业生产正常进行的水工建筑物,我们应重视它,并尽力把它修建好,管理好。一、堤防的修建(一)选定堤线的原则:1满足河道行洪要求,并与城市规划协调一致,同时还应考虑与闸涵、道路、码头等交叉建筑物的修建;2堤线应尽量顺直或微弯:3、地势较高,基础较好;4上下游要统筹兼顾,避免束窄河道。(二)堤顶高程的确定:按新建堤防河道的等级,科学地选择一个历史段最高洪水位加安全超高来确定。如襄樊市汉江河道堤防按1964年10月型洪水,即襄阳水
Water to soil cover, embankment retaining the water, retaining sparse combination, is the majority of working people to experience the long struggle with water. According to research, there have been embankments in western China. As a hydraulic structure that protects the lives and property of people on both sides of the river and the normal production of industry and agriculture, we should attach importance to it and try our best to build it and manage it well. First, the construction of embankments (a) the principle of the selected embankment line: 1 to meet the flood discharge requirements of the river and coordinated with the urban planning, taking into account the construction of cross-culverts, roads, terminals and other buildings; 2 embankment line Should be straight or slightly bent: 3, higher ground, better foundation; 4 upstream and downstream to make overall plans to avoid narrow river. (2) Confirmation of embankment elevation: It is determined according to the grade of embankment river newly constructed, scientifically selecting the highest flood level of a historical section plus safety extra-high. Such as the Han River embankment in Xiangfan City, according to October 1964 flood, that Xiangyang water