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丰满大坝 2 2 6 .0 0 m高程以下防渗层采用水下施工方案 ,防渗层材料选用水下不分散混凝土 ,防渗层厚度 1.2 m.水下浇筑混凝土采用浮式支架施工法 .浮式支架用于输送安装和支承模板 ;模板用于限定浇筑层厚度和实现分仓浇筑 ;浮式工作平台用于提供施工时的水上作业场地 ,并对浮式支架起消波作用 ;坝面清理机用于对坝面清理和打毛 ;混凝土浇筑采用导管输送混凝土 ,埋管法浇筑 .水下施工过程中采用水下电视观察和摄象及潜水员现场检查
Plumbing Dam 2 2600m elevation below the use of underwater construction of anti-seepage program, anti-seepage material selection of underwater undispersed concrete, anti-seepage layer thickness of 1.2 m. Underwater pouring concrete using floating bracket construction method. The floating bracket is used for conveying and installing the supporting template; the template is used for limiting the thickness of the pouring layer and the pouring of the sub-positions; the floating working platform is used for providing the water working site during construction and has a wave-damp action on the floating bracket; The cleaning machine is used to clean and beat the dam surface; the concrete pouring adopts the conduit to transport the concrete and the buried pipe method to pour it in. Underwater construction process adopts the underwater television observation and camera and the diver on-site inspection