为探索河道不同生态护坡的固土作用及效果,以江苏省河道生态护坡调查为背景,选取草皮生态护坡、石笼生态护坡和生态袋护坡,采用室内试验研究草皮生态护坡的抗剪强度。结果表明,草皮根系明显提高了土体的抗剪强度,且土体抗剪强度随含水率的增加而减少;复合根系的固土效果比垂直、水平根系好。采用ABAQUS建立三维有限元模型,从位移等值线和边坡安全稳定系数方面对比三种生态护坡的固土作用和稳定性,与无草边坡相比,草皮生态护坡、石笼生态护坡、生态袋护坡均能不同程度地减小土体的滑动区域范围,提升整体边坡的稳定性。研究成果可为工程实践提供指导。 In order to explore the effect and effect of soil stabilization on different ecological revetments in the river, taking the ecological slope protection in Jiangsu Province as the background, the turfgrass eco-slope protection, gabion ecological slope protection and eco-bag revetment were selected to study the shear strength of turf ecological slope protection. The results showed that the sod root system significantly improved the shear strength of the soil, and the shear strength of the soil decreased with the increase of the moisture content. The composite root system had better soil fixing effect than the vertical and horizontal roots. ABAQUS is used to establish a three-dimensional finite element model to compare the stability and stability of the three ecological revetments from the displacement contour and the slope stability and stability. Compared with the grassless slope, the turf ecological slope protection, Ecological bag slope protection can reduce the scope of soil sliding area to different extents and enhance the stability of the whole slope. The research results can provide guidance for engineering practice.