锦屏二级水电站地下厂房岩壁梁混凝土施工技术

锦屏二级水电站厂房岩壁梁长328.42 m,高3.1 m,宽12.25 m,施工时,标准分仓长度为15 m,上、下游侧岩壁梁各分22仓,采用跳仓浇筑方式施工。混凝土施工时,底模板和侧模板采用大型组合钢模板,封头模板采用木模板配合键槽模板。通过采取相应温控措施和爆破振动控制措施,混凝土未发现裂隙或裂缝,外观质量良好。

Concrete Construction Technology for Rock Beam of Jinping II Hydropower Station

The length,height and width of rock beam in Jinping II Hydropower Station is 328.42,3.1 and 12.25 m respectively.There are 22 placement blocks with a standard length of 15 m for upstream and downstream beam respectively.The placement of concrete is conducted by separate block.The bottom and side formwork is large combined steel formwork,and the head formwork is wooden and keyway formwork.After adopting temperature control and blasting vibration control measures,the quality of placement is good and no crack ...