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一、基本情况 梅县大劲水库输水涵管全长140米,涵管内径1.0米,管壁厚0.26米,管顶填土高25米。涵管作发电压力管设计,发电水头为21.15米。涵管地基是花岗岩风化土,属软基。 水库于一九七○年兴建坝后电站,七一年秋开始发电。由于负荷变化较大,水轮机前闸阀较多启闭,使涵管常受水锤压力冲击,加上涵管施工时混凝土施工质量掌握不好,以致在七三年八月间发现坝后坡涵管顶
First, the basic situation Meixian Dam Reservoir Reservoir culvert length of 140 meters, culvert pipe diameter of 1.0 meters, wall thickness of 0.26 meters, 25 meters high filling tube. Culvert tube for power generation pressure tube design, generating head 21.15 meters. Culvert foundation is granite weathered soil, is a soft foundation. The reservoir was built in 1970 after the dam power station, power generation began in autumn of July. Due to the large load changes, more open and close the front gate valve of the turbine to make the culvert often impact by the pressure of water hammer, and the quality of the concrete construction when the culvert construction is poorly controlled, so that in August 1973,