永厂公路K2+240滑塌段稳定分析及治理方案研究

Stability Analysis and Treatment Plan Research on K2+240 Landslide Section of Yongchang Highway

永厂公路K2+240段滑塌后,路基、路面及山体整体下沉,导致交通中断。滑塌原因是公路下部边坡在水库蓄水影响下,边坡中的岩土体强度降低,使得边坡的稳定状况遭到破坏,水库水位持续下降过程中由于该段边坡中的黏土、片岩等透水性较差使得边坡中的地下水不能够及时排出,边坡变形进一步发展。结合边坡滑塌原因,设计提出使用抗滑桩+挡土板支挡方案进行支护,实施效果显著。

After the collapse of K2+240 section of Yongchang Highway,the roadbed,pavement,and mountains sank as a whole,causing traffic interruption.The reason for collapse is that under the influence of reservoir water storage,the strength of rock and soil in the lower slope of highway decreases,causing the stability of slope to be destroyed.During the continuous decline of reservoir water level,due to the poor permeability of clay,schist,and other materials in the slope,the groundwater in the slope cannot be discharged in a timely manner,and the deformation of slope further develops.Based on the causes of slope collapse,a design proposal is proposed to use anti slip piles and retaining plates for support,and the implementation effect is significant.