【摘要】 为了保证黄河河口水电站截流工程成功实施,进行了3个方案48个组次截流水工模型试验,获得了截流过程龙口的系列水流要素。模型试验表明:戗堤进占至龙口宽40 m以前,投抛的粒径为1~10 mm的石料未见流失;当龙口宽度减小到30 m以后,龙口流速及上下游水位差剧增,必须改用钢筋笼、混凝土四面体抛投以确保截流进占及龙口顺利合龙。更多还原

【Abstract】 In order to ensure the successful implementation of closure of the estuarial hydroelectric power plant of the Yellow River,it conducts hydraulic modeling of 48 groups(times) in 3 plans and obtains series key flow elements of closing point in the process of closure.The outcomes show that a) there is no loss of grain diameter of 1-10 mm of thrown rock material before the closing dike constructed to 40 m of closing point and;b) When the width of closing point reduces to 30 m,the velocity of closing point and the water level difference of the upper stream and down stream are greatly increased.Thus,it must change to throw steel gabion and concrete tetrahedron for ensuring the closure progress and successful final closure.更多还原