Ain Shams Engineering Journal ( IF 1.949 ) Pub Date : 2021-02-22 , DOI: 10.1016/j.asej.2021.01.018 Doaa A. El-Molla; Mohamed A. El-Molla
Earth canals are subjected to seepage losses during the conveyance and distribution of irrigation water. With the current conditions of climate change and water scarcity, it is becoming crucial to conserve water. Canal lining is a common solution to minimize seepage losses. In this study SEEP/W model is used to investigate the effect of compacted earth lining characteristics on seepage from trapezoidal earth canals. The amount of reduction in seepage due to lining is quantified. Different scenarios for the hydraulic conductivity, thickness, and orientation (position) of compacted earth lining are evaluated. The results show that compacted earth lining is an efficient method to reduce conveyance losses. 99.8% of the water lost by seepage can be saved if highly compacted soil is used on the bed and sides. Partial lining can also be used, the most efficient orientation of lining depends on the canal’s width. Design charts and equations are suggested.
在灌溉水的输送和分配过程中，土渠会遭受渗流损失。在当前气候变化和水资源短缺的情况下，节约用水变得至关重要。渠道衬砌是减少渗漏损失的常见解决方案。在这项研究中，SEEP / W模型用于研究压实土衬特性对梯形土渠渗流的影响。量化由于衬里引起的渗漏减少量。评估了压实土衬的水力传导率，厚度和方向（位置）的不同方案。结果表明，压实土衬是减少运输损失的有效方法。如果在床层和侧面使用高度压实的土壤，则可以节省因渗漏损失的99.8％的水。也可以使用局部衬里 衬砌最有效的定向取决于运河的宽度。建议设计图表和方程式。