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The Yellow-River-Crossing Project is a special symbolic water conveyance structure in the middle route of the main canal. Its scenic environment surface sensory and water quality safety are equally important. Under the guarantee of the water quality monitoring station network designed, the water quality of the inlet and outlet of the tunnel reaches environmental quality standards II for the surface water. The deterioration of organic matter will seriously endanger the safety of water quality. Floating cleaning should become a part of the daily routine. In view of the shortcomings of traditional long-rod net fishing such as great difficulty, high operational risk factor and low efficiency, and the characteristics of many floating species, large volume and concentration in the catchment area in front of the safety barrier at the entrance of the Yellow-River-Crossing Tunnel Project, an automatic fishing barrier was developed and installed. As an exit platform for the Yellow-River-Crossing tunnel for foreign exchanges and the display of the central line of the South-North Water Diversion Project, it's a big gap from the water, additional flotation facilities were necessary. It provided an operational platform for daily cleaning up and emergency handling of water pollution emergencies, having the effects of security and beautifying the environment. [ABSTRACT FROM AUTHOR]