Geotextile is a geosynthetic-based soil stabilization technique recently used to reinforce the soil and stabilize the canal slopes. In this study, the effect of using different nonwoven geotextile configurations on soil reinforcement and slope stability for irrigation canals subjected to loads on a canal berm was experimentally and numerically investigated. First, a laboratory model was constructed, the materials were prepared, and testing procedures were performed. The experiments were conducted to investigate settlement due to footing loads of width B acting on a canal berm in a dry case under different scenarios of geotextile soil reinforcement. Different lengths (l = 1.5, 2.0, and 4.0 B) and depths (d = 0.5, 1.0, and 2.0 B) of geotextile layers were used. Second, the experimental data were used to calibrate and validate the PLAXIS-3D model. Third, a series of simulation scenarios were conducted to investigate the joint effect of geotextile configurations on settlement. After that, the PLAXIS-3D model was used to determine the factor of safety (FoS) of the Ismailia Canal (i.e., real case study) side slope under different loading conditions with and without geotextile reinforcement. Finally, a cost analysis was conducted for Ismailia Canal under different geotextile configurations. Results showed a close agreement between experimental and PLAXIS-3D simulation results. Results also showed that geotextile reinforcement enhances bearing capacity ratio (BCR) and reduces settlement. As the length of the geotextile layer increases, the BCR increases and the settlement decreases. Among the investigated geotextile configurations, the optimum configuration was found when l = 4 B and d = B. In addition, soil reinforcement by geotextile for Ismailia Canal under an excavator load of 40 tons lowered the settlement values by about 10%, whereas its effect on the slope stability FoS was almost inconsiderable. Therefore, geotextile reinforcement can be used to relatively reduce settlement near canals’ embankments.

土工织物是一种基于土工合成材料的土壤稳定技术，最近用于加固土壤和稳定运河坡度。在这项研究中，通过实验和数值研究了使用不同的非织造土工织物配置对承受运河护堤荷载的灌溉渠的土壤加固和边坡稳定性的影响。首先，构建实验室模型，准备材料并执行测试程序。进行实验的目的是研究在不同的土工织物加固方案下，在干燥情况下，宽度B的基础荷载作用在运河护堤上引起的沉降。使用不同长度（l  = 1.5、2.0 和 4.0 B）和深度（d  = 0.5、1.0 和 2.0 B ）的土工织物层。其次，利用实验数据对PLAXIS-3D模型进行校准和验证。第三，进行了一系列模拟场景来研究土工织物配置对沉降的联合影响。之后，使用PLAXIS-3D模型确定了伊斯梅利亚运河（即真实案例研究）边坡在不同荷载条件下有和没有土工织物加固的安全系数（FoS）。最后，对不同土工织物配置下的伊斯梅利亚运河进行了成本分析。结果显示实验结果与 PLAXIS-3D 模拟结果非常一致。结果还表明，土工织物加固可提高承载力比 (BCR) 并减少沉降。随着土工织物层长度的增加，BCR增加，沉降减少。在所研究的土工织物配置中，当l  =  4 B和d  =  B时发现最佳配置。此外，伊斯梅利亚运河土工布在40吨挖掘机负载下加固土壤，使沉降值降低了约10%，而对边坡稳定性FoS的影响几乎可以忽略不计。因此，土工布加固可相对减少运河堤岸附近的沉降。