Cofferdam for wading engineering

The utility model relates to a cofferdam for wading engineering. The cofferdam is characterized by comprising a fence arranged on the periphery of a construction area in a surrounding mode, waterproof cloth wrapping the fence and a water pump arranged in the construction area. Only one layer of fence needs to be arranged, the material cost is low, and the construction workload is small. On the basis, the water level in the fence is rapidly lowered through the water pump, the internal and external water pressure difference is formed, the waterproof cloth is tightly attached to the steel sheet piles under the water pressure effect, a steel sheet pile cofferdam water stop system is formed, and the water stop effect is better. And clay does not need to be used in the structure, construction is simpler, and water areas cannot be polluted. 本实用新型涉及一种涉水工程用围堰，其特征在于：包括围设在施工区域外周的围栏、包覆在围栏外的防水布，以及设置在施工区域内的水泵。本实用新型中的围栏仅需设置一层，材料成本低，并且施工工作量也小。该围栏起到挡水作用，在此基础上，通过水泵快速降低围栏内水位，形成内外水压差，防水布在水压作用下紧贴钢板桩，形成钢板桩围堰止水体系，止水效果更好。并且该结构中无需使用粘