格宾网加筋路堤稳定性及改善措施分析

Analysis of Stability and Improvement Measures of Gabion Reinforced Embankment

以某高速公路的格宾网加筋煤矸石路堤结构为工程背景,建立了相应的三维数值模型,分析了埋设多层格宾网箱和回填压脚对路堤稳定性的改善情况。分析结果表明:在坡脚下方埋设格宾网箱可改变路堤潜在滑裂面的形状,延长潜在滑裂面的路径,并降低坡脚前方土体的隆起变形;采用回填压脚改善措施,建议回填压脚高度不宜高于2 m。相关成果可为类似路堤稳定性分析提供借鉴。

Taking the gabion reinforced coal gangue embankment structure in an expressway as an example, the corresponding 3D numerical model was established. The improvement of embankment stability by burying multi-layer gabion cages and pressure foot of backfilling internal dumping was analyzed. The analysis results show that burying the gabion cage at the slope toe can change the shape of the potential sliding surface of the embankment, prolong the path of the potential sliding surface, and reduce the uplift deformation of the soil in front of the slope toe;It is recommended that the height of the backfilling should not be higher than 2 m. The related results can provide reference for the stability analysis of similar embankments.