Design Optimization of Light Metal Irrigation Channels

The last stage canal is the last channel to transport water to the field irrigation in irrigation system. Because of the large number of last stage channels, reducing the loss of water transportation plays an important role in improving the water use efficiency of irrigation area. At present, most of the irrigation channels are traditional channels for building materials constructed by slurry, masonry, concrete and other materials. They are poor in resistance to temperature change and uneven foundation settlement, and are prone to cracks which cause a great loss of water. Through the analysis, a new type of light metal plate channel which can adapt to the deformation of foundation, not easy to crack and corrosion resistance is constructed. The results show that: the trapezoid transverse reinforced galvanized steel plate has better irrigation channel structure. Under the condition of strength and deformation, the thickness of the typical canal body is 2mm, and the transverse reinforcement bar diameter is 16mm. Three transverse reinforcing bars per meter were installed on the irrigation channel of galvanized plate with the lightest in weight, the lowest in price, and the most economical investment.