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在城市水系改造工程中 ,采用常规的传统草袋围堰导流 ,其投入劳力大 ,工期长 ,污染水质 ,围堰难以在水中全部清除 ,工程造价大。用扣件式钢管和组合钢模板组成架空式的纵向围堰,其所用材料来源广 ,且可周转重复利用 ,施工工艺简便 ,建拆简捷 ,造价较低。该新型围堰导流方法为河道改造工程施工开辟了一条新途径
In the urban water system reconstruction project, the conventional conventional grass bag cofferdam diversion is adopted. The labor input is large, the construction period is long, and the water quality is polluted. The cofferdam can not be completely removed in the water and the construction cost is large. Use fastener steel pipe and composite steel template to form overhead longitudinal cofferdam, which uses a wide range of sources of materials, and can be recycled and reused, the construction process is simple, simple construction and disassembly, lower cost. The new type of cofferdam diversion method opens up a new way for the construction of river improvement projects