摘要
Abstract
Taking the K3 landslide of Qinfan Highway in Qinshui County,Shanxi Province as an example,on the basis of on-site geological mapping,investigation and surface deformation monitoring,the engineering geological conditions and disaster development characteristics of the landslide are analyzed,and its stability under different working conditions is evaluated,and the control measures are put forward.The results show that the landslide is revived by the unloading of cutting excavation and continuous rainfall.The buried depth of the sliding surface is 14.5～18.5 m,and the sliding body is mainly composed of silty clay and macadam soil,which belongs to a traction landslide.At present,the cutting slope has undergone sliding deformation and the whole is in an understable-unstable state.According to the characteristics of the landslide,the treatment concept of attaching equal importance to retaining and drainage is put forward,which adopts pile-plate wall support,inclined drainage hole at the foot of the slope to drain groundwater,supplemented by the retaining wall at the foot of the slope,slope protection and surface drainage measures.After the implementation of the project,the landslide has been completely cured,which can provide reference for highway excavation in the old landslide area.关键词
路堑边坡/开挖卸荷/连续降雨/稳定性/整治措施Key words
cutting slope/excavation unloading/continuous rainfall/stability/regulation measures分类
交通工程
