Steel cofferdam device for underwater construction of concrete river bottom masonry protection

The utility model relates to a steel cofferdam device, in particular to a steel cofferdam device for protecting and building a concrete river bottom in water. The steel cofferdam structurally comprises a steel cofferdam body, a rubber and plastic layer is laid on the periphery of the bottom face of the steel cofferdam body, the rubber and plastic layer is bound and fixed to the bottom face of thesteel cofferdam body through iron wires, and the rubber and plastic layer is wrapped by a non-woven fabric layer. According to the steel cofferdam device for underwater construction of the concrete river bottom protective masonry, the soft and easily-deformed rubber and plastic are adopted as the water stop layer, and the water stop problem between the lower opening of the steel cofferdam and theconcrete protective masonry can be solved. 本实用新型涉及一种钢围堰装置，特别涉及一种混凝土河底护砌水中施工用钢围堰装置。其结构包括钢围堰主体，钢围堰主体底面四周铺设有橡塑层，所述的橡塑层通过铁丝绑扎固定在所述的钢围堰主体的底面上，所述橡塑层外部包裹有无纺布层。本实用新型的一种混凝土河底护砌水中施工用钢围堰装置，其采用柔软易变形的橡塑作为止水层，其能够解决钢围堰下口与混凝土护砌之间的止水问题。