摘要
为认识植被对路堤边坡稳定性的影响,利用岩土数值分析软件,探讨了植被位置、植被深度、植被根型等参数与边坡稳定性的关系。结果表明:随着竖直单根远离坡脚,路堤边坡稳定系数呈先增大后减小的趋势,根系距坡脚的水平距离与坡高之比为0.2时植被防护效果最佳;随着竖直单根深度的增加,边坡稳定性呈递增趋势,当根系距坡脚的水平距离与坡高比值在0.3~0.7之间时,根系深度增加对边坡稳定性的锚固作用最明显;在总根系长度相等时,主直根型的锚固效果最好,散生型根次之,水平根型的锚固效果最差。
To understand the effect of vegetation on the stability of embankment slopes,the relationship between parameters such as vegetation location,vegetation depth,vegetation root type and slope stability was explored using geotechnical numerical analysis software.The results show that the stability coefficient of embankment slope increases first and then decreases with the vertical single root away from slope toe.The vegetation protection effect gets the best result when the ratio of horizontal distance between root and slope toe to slope height is 0.2.The stability of the slope increases with increasing the vertical single root depth.When the ratio of the horizontal distance between the root and the slope toe to the slope height is between 0.3 and 0.7,the anchoring effect of the root depth on the slope stability is the most obvious.When the total root lengths were equal,the anchorage effect of main straight root type works best,followed by scattered root type,and the anchorage effect of horizontal root type was the worst.
作者
赵呈冉
ZHAO Chengran(Lanzhou Railway Design Institute Co.,Ltd.,Lanzhou 730000,China)
出处
《甘肃科学学报》
2022年第4期125-129,共5页
Journal of Gansu Sciences
关键词
路堤
边坡
植被防护
数值模拟
稳定性
Embankment
Slope
Vegetation protection
Numerical simulation
Stability
