狗牙根对黄土边坡稳定性影响分析

Impact Analysis of Cynodon Dactylon on Loess Slope Stability

为探究黄土地区植被护坡效果,基于Geo-studio有限元软件模拟了狗牙根对边坡稳定性的影响,研究了降雨和水位下降情况下根系对坡体的增强作用,并探讨了不同增湿条件下狗牙根与边坡m值敏感性的变化规律。结果表明,根系有效抑制x方向变形,降雨条件下根系可提高边坡浅层的稳定,对深层几乎无影响,加入根系可改善坡体应力状态,提高条间抗剪能力。可见狗牙根可显著提高边坡浅层稳定性,从而为生态护坡工程建设提供借鉴。

In order to explore the slope protection effect of vegetation in loess region, the impact of cynodon dactylon on slope stability was simulated based on Geo-Studio finite element software. The reinforcement of root system on slope was studied under the conditions of rainfall and drop of water level. The change rule of m-value sensitivity between cynodon dactylon and slope under different humidification conditions was discussed. The results show that the root system can effectively inhibit the deformation in the x direction. Under the condition of rainfall, the root system can improve the stability of the shallow slope, but has almost no impact on the deep slope. The addition of root system can improve the stress state of the slope and improve the shear capacity between the strips. The results show that the cynodon dactylon can significantly improve the stability of shallow slope, thus providing a reference for the construction of ecological slope protection engineering.