非断流条件下的大坝钢筋混凝土防渗墙施工

Construction of Reinforced Concrete Cutoff Wall of Dam on the Condition of Non Flow Cutoff

为了保证工程按期进行,在地质条件较差的河床上非断流条件下,三江口水电站大坝钢筋混凝土防渗墙施工采用了传统的冲击钻机造孔成槽,泥浆固壁,抽筒换浆清孔,吊车吊放钢筋笼安装,直升导管法灌注水下混凝土成墙的施工方法。在非断流条件下进行大坝钢筋混凝土防渗墙施工为主体工程施工争取了宝贵工期,降低了施工成本,确保了工程节点工期顺利实现。

In order to guarantee the project construction on schedule,the reinforced concrete cut-off wall of Sanjiangkou Hydropower Dam is constructed on the condition of non flow cutoff.The construction methods include slurry drilling method using traditional drilling rig,pumping slurry for cleaning,reinforcement cage installation with crane,and concrete injection with vertical conductor pipe.The construction without flow cutoff have great contributions on cost reduction and the achievement of construction schedule.